Hacking the Wild Making Sense of Nature in the Madagascar Jungle

This book documents the first expedition of a group of explorers and designers in the wilds of Madagascar. It investigates “making” as a way to explore and understand the environment. We hope that it can inspire you to go out into nature and discover new ways to appreciate the living world around you.
All profits go to fund future Hiking Hacks for exploring the worlds of nature and technology.

This book documents the first expedition of a group of explorers and
designers in the wilds of Madagascar. It investigates “making” as
a way to explore and understand the environment. We hope that
it can inspire you to go out into nature and discover new ways to
appreciate the living world around you.
AQ + HPW + BF

i4

Supported by collaborations with:

www.plusea.at

Published May, 2015 v1.0
This work is licensed under a
Creative Commons Attribution 4.0 International License.

Mission
Hacking the Wild is a hybrid research project to investigate concepts
in biology, technology, and documentation. This first expedition in
February 2015 united researchers of many different backgrounds to
explore the rainforests of Madagascar to make sense of nature.

Exploring Ants

A.

Our first goal is to hunt down a new species of
ant thought to live on top a mountain in madagsascar.

Wild Hacks

B.

We also look for ways to craft digital technology in
the wild to explore the animals and ecosystems.

Dissemination Lab

C.
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Finally, we search for new ways to document and
share these kinds of adventures with the world.

from www.AntWeb.org
Photographer: April Noble

3

Crew
Brian Fisher
Brian’s research focuses on leveraging new technologies and tools
to discover, document, and understand the diversity on earth and
ensure these results are available
and used immediately for conservation action.

Hannah Perner-Wilson
Hannah explores the electrical
properties of materials, as well
as traditional and contemporary
craft techniques. She develops
new techniques for building electronics that emphasize materiality
and process, because she believes
that this will allow us to build
electronics that are more diverse,
understandable and expressive
than electronics currently are.
Andy Quitmeyer
Andy is a polymath adventurer
exploring new ways of interacting
with living creatures. At Comingle,
he employs his skills in physical
computing and animal interaction
to develop novel means of engaging with the human animal.

In the same way we want to prevent the diverse lifeforms of the
rainforest from being lost to the homogeneity of a rice field...

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Your tools shape the way that you experience the world.
Homogenous tools stop you from seeing the richness of the environment.
We are looking for diverse technology that can support diverse ecosystems.
Help us make tools for exploring and understanding instead of conquering.

Technological Diversity

...we want to promote tools and techniques that let people turn
tiny industrialized things into special devices with unique abilities.

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The Expedition

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MAPS
French Route (1971)
Our goal is to retrace
the steps of this
french expedition
that reached the
highest peak in the
Anosyenne mountain
range in southeast
Madagascar.

Ours vs. French
This maps compared
our two routes and
lays them out on a
map of the region.

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Our Illustrated Map (2015)
The illustrated map of our expedition on the previous page was compiled
from hand-drawn maps that we all drew one evening in our first basecamp as part of a map-drawing activity. Bellow are some excerpts from
the hand-drawn versions.

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After our crew first assembled in Fort Dauphin, we loaded and drove
the truck for hours over rugged terrain and rivers. To get to the mountain, we hired dugout canoes, paddled to a village, hired porters, and
hiked for days through the forest.

Raincamp
Our first basecamp was a lovely spot at the base of the mountain. A
gorgeous nearby bathing pool was surrounded by rapids. The insects
were interesting and our crew constructed beautiful furniture for living,
studying, and building.

Hanging tarps to protect gear from rain is
one of the firt and most important jobs in a
new basecamp

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Stick insect plays
dead on diagrams
for planning out
the camp layout.

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Ant
Collecting
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One of the scientific objectives of this
project was to survey the insect life
in this strange, largely inaccessible
space. We used two primary tools
for these activities: Winkler Bags and
Malaise Traps.
Winkler Bags
• Leaf litter is scraped up into a
bag with a hand-rake.
• This litter is sifted with a special
expandable hand-held tube.
• The sifted material (full of all kinds
of good insects) is loaded into the
winkler bags and allowed to dry.
• The insects come out the bottom
and are preserved in the alcohol
jars on the bottom.
• *Special care should be taken to
never bump the Winkler bags or
else debris will fall into the preservation jars.
Malaise Traps
• An appropriate area of the forest
is found; typically one with intermittent warm light.
• A special tent-like structure is
erected over a patch of ground.
• The insects fly up towards the light
and are driven into the collection
jars.

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Pulley Cam
Why?
It can be fun an useful to get a new
point of view on your home when
living in a rich, strange environment.
It’s also a low-tech way to get the
vantage point that high-tech gizmos
like flying drones wouldn’t be albe to
reach in a thick forest. Plus, no batteries! Explore the canopy now!
Materials
• Water Bottle
• String
• Grippy Twisty things (or tape)
• A rock
• a Stick
• Camera
Make it!
• Secure your camera to the bottom of the bottle. Make sure you
can reach the controls
• Fill the bottle with water.
• Make sure your whole load is
actually pretty heavy to prevent it
from getting stuck in the branches.
Use it!
• Toss (or slingshot) the rock with a
light string over a high “V” in some
tree branches
• catch the other side, and replace
the rock with the bottle
• Reel it up into the canopy!
Inspired by http://publiclab.org/
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Some cameras
you can monitor
wirelessly!

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Jungle Leaf
Speakers
Imagine being in the middle of the rainforest and finding
(almost) all the materials necessary for building some decent loudspeakers!

strong neodymium magnets
Sewing needle
and small piece of
thread, or natural
fiber, or dental tape

Leaf (speaker
membrane)

Enameled wire (can
also be salvaged
from another
speaker, a solenoid,
a motor, a transformer....)

Bees wax for
holding coil
in place

Sound source
(mp3 player
or similar)

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Amplifier
for speaker
(make it
louder)

Lighter and/or candle
for heating wax

Music: we recommend the jungle sounds of Ptarmigan >> www.ptarmigan.bandcamp.com

The leaf in the Jungle Speaker is the
membrane of the speaker, the part that
will vibrate to move the air.
In order to cause it to vibrate a
coil of enameled wire is wrapped
tightly around the narrow end of
the leaf cone. This coil acts as an
electromagnet when the audio
signal is played through it.

To hold the coil in place, beeswax from locally harvested honey comb is melted and dripped
over the coil.
A permanent magnet
is inserted into the
cone and rests just
inside the electromagnetic coil.

In this example an amplifier module is used
to increase the current
provided to the speaker
to make it more powerful and louder.

The two ends of the coil are the leads of the
speaker to which the audio signal is fed.
When the audio signal is high, the coil
becomes magnetized it repels/attracts
(depending on the polarity of the signal
attached tot he coil) itself from the
magnets within and when the audio
signal is low (0V) it relaxes. This
constant repelling/attracting/
relaxing is what cases the leaf
to vibrate and translate the
digital audio signal (high/low)
into movement of air that
we can hear.
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Once you start looking for a leaf
for your speaker, you’ll start noticing a whole lot of details about
leaves that you probably never paid
attention to before. This was one
of the nicest experiences building
electronics project in the jungle that
incorporate the jungle materials surrounding you, one gets to know these materials from
a whole new perspective. Looking at them for their material properties
to fulfill a specific purpose, but also simply collecting different plants and
insects and observing them for inspiration.
A good leaf mem brane is:
- Stiff/rigid, not too soft or limp
- Not too small, enough surface area to move air
- Ability to roll into coil (for this particular design)

Roll the leaf into a cone and look for the place
where the main stem/vain of the leaf overlaps
itself as shown in the photos.
Stitching either side of the
stem/vain will allow you to
pull the stitch tight without
the thread cutting through
the leaf material.
After stitching, pull the
thread/fiber tight and tie two
knots in it.
It is important that this stitch goes in and
out either side of the main leaf stem/artary since this artery is robust to stop the
thread from tearing it, sewing anywhere
else on the leaf will cause the thread and
tear through the material of the leaf.

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For the electromagnetic coil we want a thin,
single core wire that is insulated.
Begin by wrapping the coil around the narrow
end of the leaf cone, about 1cm up from the
bottom. After making a few coils I found it
easier to remove the coils and continue wrapping them around the tip of one of my fingers making sure to maintain the same diameter.
Then placing the coil back on the cone.
This example used about 1-2 meters
of wire, but generally the more turns
you can get, the stronger your electromagnet will be and the louder
your speaker will sound.

We were lucky that the day before our guides had
gone off in search of a route up the mountain to our
next base camp and had come back with bags dripping with honey and full of honeycomb. Of course
our first thought was to eat as much honey as we
could - a welcome change from our rice and meat
diet.
Beeswax is nice because it smells so
good, but really you can use candle-wax for this. Heat up the wax in
a continuer using a lighter or even
lighting a candle and using it’s
flame. Hold the coil in place while
dripping the wax over it and
making sure to get it on the leaf
as well. You can go back with
lighter to re-heat the wax on
the coil to smooth it out and
disperse it more.
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The two ends of the coil are the leads of
the speaker to which the audio signal is
fed. Because the enameled wire is insulated these need to be exposed so that
we can make electrical contact to them.
Use a lighter to burn off the insulation
and possibly also the blade of a sharp
knife to scrape it off.
Now we have a membrane with an electromagnet attached to it. We still need a permanent magnetic field (provided by a permanent
magnet) to insure our electromagnet will want to repel/attract itself
away/twoards something and move. In this example the magnet(s)
are simply dropped into the bottom of the coil
and since they are wider than the narrow
opening, they do not fall out.
Now the speaker is finished, it
needs to be connected to an audio
signal. You can connect it directly
to two of the wires coming out of
your headphone jack by chopping
the wires of a pair of cheap (airplane) headphones.
Or you can buy various amplifier
modules that will allow you to
boost the volume of your speaker
by providing it with more current.
For the Jungle Speakers I chose
to amplify the audio using an Amp
module from Adafruit. The resulting sound quality and volume were
surprisingly good, even among all
the other sounds of the jungle we
could clearly enjoy the music by
Ptarmigan

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Some more ideas for
making electromagnets
on leaves to turn them
into Jungle Speakers!

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Materials and Tools

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Documentation
Olympus Tough
Handiest adventure cam. Super durable,
small, and waterproof, great to have in a
grimy pocket ready to shoot decent images
and video whenver.

Pre-charged and Panels
To keep all our electrical devices charged
we mostly used pre-charged battery
packs and portable solar panels.

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Jungle Apparel
Fitted Raincover

60L Hiking Backpack

Camping Hammock

Lightweight Belt
Quick-Dry Button Up
With Pockets

Cargo Pants

Quick-Dry Socks
Quick-Dry Undies

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Hat

Built in net, and auto closure
to escape bugs

Above: Self-contained hammock tents work great in thick forests.
Below: Sandals are important for letting your feet dry in camp.

Drying feet while working in
camp.

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Drawing Tools
Drawing is a wonderful way to experience and process the natural environment. Creating illustrations
and diagram is also essential when designing new
types of robots, sensors, and other crazy jungle devices. :

A. Notebook
i. Waterproof - I personally don’t like because you can only use
pencil, and the illustrations are low contrast. Good for data, bad
for drawing
ii. Water Resistant - I usually get just spiral-bound archival
illustration notebooks. They get wet, but they also dry out fine
without turning into mush. Also if you get them with a hard cover,
it’s easier to write when flat surfaces are not available.
B. Plastic Triangular Protractor - Great for straight edges and angles
in diagrams
C. Assorted Pens and Pencils - A variety from pencils to paint pens.

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Barrett was asked to list the 6 pencil-like tools he would always bring
to the field. These were for illustration, marking, and more in the wild.

First Aid
First Aid equipment is integral to keeping your body able to explore
and create things in the wild. Here are some key items one might
want to have on hand for such an adventure:
•
•
•
•
•
•
•
•
•
•
•

Making and Jungling can both be hard on your
hands. Take care of yourself!
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Building a Jungle Lab
In the first Hiking Hack in Panama we simply built tools on the ground. This showed
us the value of a proper workspace when making things in the forest. In Madagascar we tested initial prototypes of worktables and shelves all made from weaving
sticks, vines, and leaves.

Inspiration from tables made by our Malagasy Guides

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The Wearable Studio aims to
package the work-environment of a typical Electronics
and Physical Computing studio
into a series of portable items
that can be carried on the
body.

This project originated during work on the JungleLab. While initially preparing we were primarily concerned with making sure to not
forget any essential tools or materials. We realized though, that we
had thought much less about how we would actually be building in
the jungle.
Access, storage, and work-surfaces become important as soon as
you unpack the first components and begin to build. Creating a
comfortable and efficient workspace is necessary for productivity.
The Jungle has no flat surfaces. It’s dark and wet. The vegetation
makes you lose anything dropped on the ground. Being out in the
wild, dark, uneven jungle is wonderful and inspiring, but also drains
energy Having everything at-hand when building makes a huge difference. Returning to my studio after this experience, reminded me
how quickly things go when everything has a place and there are
comfortable work-surface for every task.

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Providing the infrastructure and functionality of a studio or lab, frees the engineer
to become nomadic in her practice.

The goal is to build a set of wearable and portable accessories that allow
the electronic textile engineer, me :-), to build directly at the sites of
my inspiration. With such a nomadic studio I can travel to unique places,
experience their cultures, collaborate, and incorporate local crafting techniques and materials
I believe that creating new spaces for working will affect the kind of work
I create. A Wearable Studio practice could keep me more engaged with the
environments, animals, and people around me.

Now is a perfect time for electrical engineers to become mobile with
their practice. It’s not just electronic parts that have become smaller
and smaller, but also many of the tools used in electrical engineering
(power supply, multimeter, oscilloscope, programmers… ) have become
more compact and portable. Many practices closely related to hardware
such as software/programming and CAD/design have been liberated
from static infrastructures because laptop computers – their primary
tools – are powerful and lightweight. Co-working spaces and FabLabs
offer temporary workspaces all over the world. There is an awareness of
the benefits of local production and site-specific development.
1) Mobile (the traveling engineer)
Moving through the world while practicing a trade. The now historic
craft tradition of journeyman years (German: Wanderjahre), meant
that a crafts apprentice after absolving her apprenticeship would travel around to gain further experience, carrying their tools, skills and
knowledge with them wherever they went. The idea of the wearable
studio is to allow practicing electrical engineers to be more mobile in
their practice because they can readily pack up their workspace and go.
Reducing the time and effort spent preparing and packing work supplies
to port them from one place to another. Providing a productive work environment that is comparable to an electronics workbench. Having such
a mobile tool-set will hopefully encourage new forms of mobility within
the field.
2) Local (site-specificity)
The local environment as a resource and source of inspiration. The
ability to work on-site is often credited with benefits such as those
of user-centered design. But besides inspiring different solutions and
enabling new approaches, I want the mobility of practice to expose the
electrical engineer to new and different locations, contexts, cultures
and people and their practices. The wearable studio should not only to
allow for on-site work and production, but also for new ways of sharing
process and engaging with others through practice.
3) Practice (making as a means of exploring)
Putting the act of making into the foreground as a means of exploring
and experiencing the world.

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In order to achieve mobility and encourage on-site building, the Wearable
Studio collection focuses on fulfilling the following functionalities:
Functional Workspace
• Work environment (lighting, power…)
• Work-surfaces (soldering, building…)
• Organization and easy-access storage for materials, tools and parts
Ease of Transport
Packing up is one of the most daunting tasks when traveling for a project. Fears include: forgetting an essential item, disrupting an organized
workspace, and transporting everything from one place to the next. The
portability/wearability of each item in the Wearable Studio Collection is
important because the user should be able to carry them on their body
without the aid of additional packing structures (bags, suitcases, boxes…).

Trains
Parks

HOTELS

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Wildhacker
Daypack
The first idea was for a miniature version
of my studio contained in a single shoulder
bag. This "Wildhacker Daypack" is a reasonably compact version of my studio workspace that allows me to comfortably carry
a selection of all the tools I commonly use, as well as a selection of materials that can be determined by the nature of the occasion. It was partially
inspired by the small day-packs the biologists would take with them during
their fieldwork for the day (see next page).
The Daypack itself not only carries the supplies but itself becomes part of
the workspace by offering organization, easy access and storage facilities.
It should be possible to carry the Daypack for the duration of a full day,
so it also has space for food and drink. After all, a studio space is not only
about production, but also about living and surviving.

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Stephen was asked to list the
6 items he would always carry
in his field kit for working with
ants. He also suggested that
“Nowadays I also want a GPS
device to mark collection locations and help me get home!”
1.
2.
3.
4.
5.
6.

Featured Opinion: Field Kit
Dr. Stephen Pratt

Aspirator
Knife
Collecting Vials
Forceps
Small flashlight
Water + Compact Snacks
Stephen is an entomologist at ASU studying the emergence of complex behavior in decentralized groups.

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Prototyping a portable,
tensioned work-surface

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Right after seeing that the first prototype worked really well I went out and bought a
selection of materials for making this first version. I have now been wearing and using it
for 5 weeks. It has held up wonderfully and I intend to continue using it until I make a next
iteration that will incorporate a slowly growing list of improvements.
List of improvements for next version:
- waterproof seams and outer zippers
- find nice way to secure flap so that nothing can fall out
- add pocket that can be accessed from both outside and inside
- add outside pouch for water bottle
- a way to expend bag when it needs to fit more

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!
y
t
i
v
i
t
c
A
your

Too

This documentation on building your own bag is
my first attempt at slowly building a community
and culture around a mobile studio practice of
makers who wear their practice and are capable of thinking through making wherever they
go.
Your wildhacker daypack should contain everything you need to travel and
build. Depending on your practice the concept of a daypack might be very
different, but the following steps might be helpful in developing your own
daypack design.
If you follow the following steps and begin to imagine, design and build
your own daypack, I would love to see your process. If you would like to
share you sketches and photos with me, my email address is:
hannah@plusea.at

List, sketch and measure all the
items you carry with you on a daily basis (keys, phone, notebook,
pens...). I found a most useful
daypack to be one that I could
also use on an everyday basis so it
is worth considering that it could
be able to carry these items too.
List all the materials&tools that
are necessairy for you to practice
your trade.
Evaluate the frequency with which
you use each item (1=seldom, 5=
very often).

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How do you like to carry things? In a shoulder-bag, backpack, belt or pockets? Begin sketching some ideas and refer back to your list of items&materials&tools to make sure they all
have a space. Take note of which items you need to access most frequently and consdier
options for placing them in appropriately accessible spaces.

Begin to add dimensions to your sketch, pull out a ruler and draw a blueprint of it in scale
to get a feeling of the proportions. Check items will fit based on their dimensions.

A quick way to get a feeling for your design is to build it from paper and cardboard.

What kinds of materials would you like
your daypack to be made from? What
charactaristics and specifications can you
ascribe them - waterproof, sturdy, translucent, soft, stretchy...?

Seeeduino like I did)
Battery (Lipo rechargeable 3.3V)
Wires
Wire-Strippers
Solder
Soldering Iron (We used a Butane
powered one for the field)
• Heat source for Shrink Tubing
(Butane powered soldering iron
worked!)
Tongue Display
• Two Leaves (About the same size
• One slightly larger than the other)
• Conductive Thread
• Thin Ripstop fabric (to sandwich
between the leaves to stop them
from tearing with the thread)
• Wax (We used wax from honey
found in the forest to seal the
tongue sensor!)
•
•
•
•
•

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Sensing Ants: A Huge
Challenge
Some scientists have been making awesome software for monitoring
insects (mostly ants! http://www.antracks.org/, bio-tracking.org), but
usually this needs computer vision, and nice laboratory conditions.
In the ants’ natural environments, you have to deal with some tough
problems:
•
•
•
•
•
•
•

Arbitrary geometry: creatures can be on, or under leaves, around stems, sides
of vines
Tiny: can’t put sensors on most little insects, they also don’t move things that
much, or take up much space, or have lots of pressure
Fickle Lighting: Jungle is pretty dark, but sometimes light comes through in
patches
Insect Camouflage: some insects are the same color as their surroundings
Insects are Dry: And generally not very capacitive or conductive
Insects are room temperature: a lot of tiny (non-flying) insects like worker ants
are pretty much the same temperature as the background
Dispersed: Many insects are more interesting to study as a group, so you want
a sensor that can be distributed over an area to monitor their traffic en masse.
This means it has to be cheap and adaptable to different parts of the environment (ground, thick limbs, thin limbs)

For years now, I have been trying to figure out ways to sense ants in the wild. I have
tried: thermal sensing, sound, vibration, capacitance, electric field proximity sensing, computer vision, VCNL 4000, and optical mouse cameras (I think the most
successful out of the batch), but none really worked that great. Now, with Hannah
and Brian’s awesome help, we came up with this potentially awesome design!
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FAQ
Why do you want to sense insects?
Scientists have all sorts of reasons for wanting to know this data for experiments.
In general, though, we want to make technology that helps humans shift their
attention from themselves, and focus more on all the other lifeforms (Somewhat like
Boradkar’s sentiments in this “Design for All Life” write-up http://www.core77.com/
posts/31264/Design-for-All-... Interacting with creatures that aren’t like you helps
you appreciate them!
Ok, but why zap your tongue?
I wanted to be able to monitor several spots on a tree and the ground all at the
same time. Usually we think to just look at things, but your eyes, and visual attention
gets worn out REALLY QUICKLY. Also it’s difficult to closely stare at a branch of
a tree, the trunk, and the base of the tree all at the same time. So I wanted to map
this information directly onto your body in a more persistent, and maybe ambient way. Your tongue has great spatial resolution, and from reading about other
tongue display projects (like in Kaczmarek K. “Sensory augmentation and substitution” 1995), more recent incarnations like Dublon’s “Tongueduino”. It also leaves your
eyes and hands free to work on other things!
The jungle is also a noisy and dark place. this can make hearing a signal, or seeing
an alert trickier. Zapping your tongue gives you consistent alerts in most environments.
What can you detect?
Our initial designs in the jungle were pretty rough, but with some refining of the
design and the code, I think it could be pretty great! Still, we could totally detect
larger insects walking over (like beetles, millipedes, bugs), and we had some promising, but sometimes fickle, results with smaller insects like large-medium sized ants.
Don’t the fiber optic wires mess with the insects’ movement?
They don’t seem to mind at all. First, these lines are quite thin, and even the smallest
ants walk over no problem. Second, in the jungle, the critters are used to manuevering over all sorts of impediments and vines are quite common, so really this doesn’t
seem that out-of-the-ordinary to them.
Oh, so you solved all the problems of sensing insects
TOTALLY NOT. But I think we came up with a really interesting design that could
be applied in a lot of areas for science, art, and fun!

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Fiber Optic Band Sensors
The basic concept is that we are making a flexible photosensor
ground wire. Fiber optics are pieces of extruded plastic that can carry
light from one end of a flexible tube, and emit it out the other end.
Try it out, put an Led on one side of a bundle and see how the light
moves through it!
If you scratch up the sides f the bundles however, the fiber optic wires
will also emit light from the sides. The same works in reverse! If you
put an a light sensor at one of the bundle of fiber optics, and the
sides are scratched up, you end up with a long, flat surface that can
sense the amount of light over it.

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1. Grab your bundle of Fiber Optics
2. Arrange the fibers so they are FLAT
3. Tape both sides (near the ends, but not AT the ends) with the
double-sided tape
4. Attach black material over one end (to block light coming though)
5. Bundle up the wires on the other end into a cylinder
6. Put a small piece of heat-shrink over them to keep them bundled
7. Shrink it with your soldering iron/heat gun
8. Grab a 5mm LED, put it at the end of this heat-shrunk tube and
fit another, larger, BLACK heat-shrink tube over them both
9. Heat shrink this larger bundle to finish the OCULAR CAP
10. Turn the LED on (with a coin cell battery) (you shouldn’t be able
to see much)
11. Take a piece of sand paper and start sanding them on a flat
surface
12. While the LED is on, you should be able to start seeing the light
shine through
13. Continue until it glows pleasantly
14. Replace the LED with a photoresistor

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Then lay it on the ground where insects like to go, or wrap around a tree
and secure with a tac, and test it out. You can even just hook up a multimeter to it and see if the resistance changes when bugs walk over.

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Fiber Optic Point Sensors
This interface can be extra beautiful, but might not cover as wide of
an area as the full sanded band. The basic idea is to string the regular (unsanded) fiber optics through leaves and mushrooms to make
pretty glowing points of light (or sensory positions).

Simple Gate + Display
You could have an led in a certain position with a gap between it
and the base of the fiber optic bundle. Then when a creature passes
through this gap, the light will flicker as pretty dots on the leaf. The
problem with this one is that the insects movements are limited to this
very little area of where the sensor gate is. Would work well if placed
near a nest entrance, or other place where you knew where the critters
were going to be.
Point Sensor
A cool thing about this project is that you could potentially use an
LED as the light sensor. With that, you could detect AND display the
results with the same light-tubes. This method has an advantage over
the other in that the area that insects could be detected is somewhat
more dispersed, but the change in the light hitting the sensor overall
will not have as much impact from one little point being covered by
an ant.
Our Tests
Our initial trials didn’t function that great as a sensor, but it made for
really gorgeous displays, especially at night in the jungle.
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These are pretty simple to make.
• Grab your fiber optic bundle
• Melt one side of them so that the tips form little balls (this stops
them from pulling through the leaf or mushroom)
• use a large needle to make an initial hole
• thread the fiber optic through it
• bundle them together (like with the band-sensors) using heatshrink tubes at the other end
• Attach an LED at the bottom (or photoresistor)

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Conductive Thread
“Wimper Switch” Sensor

When Hannah came up with this idea, she referred to it as a basic
“Wimper Switch.” I thought this was some sort of electronics engineering term, but actually she was just meaning “eyelash switch” but didn’t
really translate it from the german. I like the name anyway.
The concept is just like her Stroke sensors: (http://www.plusea.
at/?p=2236) But made as a band for insects to try to trigger as they
walk past. You don’t even need to program anything, just complete
a connection between the lashes and the band and hook that to a
piezo buzzer or LED.
The initial prototype we made didn’t actually really work well at all
because the thinnest conductive thread we had was way too thick.
Hannah is working on a new version of them with super thin fabric
she had at home that is truly like an “eyelash” in thickness.

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• Cut a strip of stretchy non-conductive fabric (With some thickness, like the neoprene she had)
• Cut two strips of conductive fabric
• Sew one conductive and one non-conductive band together
via lots of little strings that you let dangle over the edge (Remember use the thinnest conductive thread you can find. Ours
didn’t work that well because even at 2ply it was still too stiff)
• Wrap the extra piece of fabric around the target zone of a
tree
• Wrap the eyelash band around this one so the eyelashes dangle over the other conductive strip
• use aligator clips to make a circuit between each strip of conductive fabric and something like an LED or piezo buzzer so
that when the lashes touch the strip, you get an alert!

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Tongue Display

Ideally for a body electrode, you would have a circle surrounding
another circle made of two different electrodes. This can give you the
broadest sensation. We tried to sew this by hand.
• Find an appropriate sized leaf*
• Cut a piece of ripstop fabric the the same size
• Sew 3 dots for the ground wire (through the leaf and the fabric)
• Sew 3 separate threads around each ground wire dot that will be
your three different cathodes
• Make sure to not short any of your lines out
• Solder the 4 lines (3 electrodes, 1 ground) to some header pins
• Connect some wires and make sure your tongue display is actually zapping correctly!

*WARNING: the jungle is full of all kinds of plants that are so used to getting
attacked by creatures that they produce all kinds of different defenses. This makes it
not the best idea to just go putting random leaves in your mouth. The smart thing to
do would be to test the leaves first or know what you are putting in. I didn’t actually
do that, but i’m a little stupid this way.

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Your tongue feels disproportionately big in your mouth, so start putting different sized leaves in to get a good
fit. I actually traced my own tongue on my notebook to find out how big it was.

Connect Controller and
Speaker
Connect your photoresistors to the Analog Inputs on your Arduino.
Connect your positive electrodes on your tongue display to the PWM
pins on your arduino. Hook the ground electrodes to the ground. You
can also have an extra output going to a speaker for more feedback
Organic Breadboards
Originally, Hannah came up with this fun idea to use these mushrooms we found as breadboards. They work pretty well, hold things in
place, don’t get burnt. But for sensitive applications, especially ones
that involve capacitance (like using an LED as a sensor), these screw
up the electronics a bit. (But they sure are cool looking!)

Popcorn Time
Whew! You worked really hard for a while in the jungle.
Have some jungle popcorn to get your energy back up!
Lots of salt! Ok! Back to work

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Programming in the Wild
Get the code for your Traffic Taster right here:
https://github.com/quitmeyer/MadFieldCode/
Tips for Jungle Coding
We carried expensive, power-hungry computers all the way out into
the wild with us, for really one main reason: programming microcontrollers. Battery life is previous, we were only able to recharge the
computer 1.5 times during the 2 weeks we were out in the bush. By
rationing our computer use though, we perfectly used it up for several
projects.
• Get huge batches of simple test code for lots of projects on hand
• Write pseudo-code, and then actual code, out by hand on paper.
This will help you think through it, and when you are ready, you
can just hurry up and write down everything on the computer.
Tech Documents in the Wild
You probably don’t have internet in the jungle! and you need to
conserve energy. It’s a good idea to get a cheap-e-ink PDF reader,
and get offline copies of any technical documents you might need to
know how to hook stuff up properly! The amazing folks at Sparkfun
gave me a huge data dump of ALL their PDF’s for all their products!
And it’s here for free for you and your next jungle adventure!
https://dl.dropboxusercontent.com/u/7533057/Tech%20Docs%20
Sparkfun.zip

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Connecting and Testing

In a crazy place like a rainforest, every device needs to become super
site-specific. Figure out exactly where you want to install your sensor,
and start building it there! This will make sure all the lengths of the
wires and everything are correct.

Testing
Sensor
• We were able to sense beetles, and large ants. We got fickle
results with small things.
• Sensing at night, with a constant light-source worked better.
• Future ideas would be to use constant IR lighting. Even better
would be modulated IR lighting.
• I think some of the greatest improvements could come from
refining the software to do smarter stuff with how it detects the
high-frequency movements of the insects against the low-frequency changes in environmental light.
Tongue Display
• This worked quite well and was very noticeable (and unlike sound
or vision, was not affected by the changing noises or lights in the
jungle).
• The wax tasted good.
• It made me drool extra.
• I could have embroidered the electrodes more nicely. Ideally i
would have circles of conductive fabric cut out, and much higher
resolution.
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Cloudcamp
Our final basecamp was a thin strip of tents and
workstations along the mountain’s narrow ridge.

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A pig’s journey into food
Life in the
wild gives
you a close
relationship
to your food.
A pig was
carried up
the mountain,
slaughtered in
a Malagasy
style and
cooked.

Abandoned Jungle Lab

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The Summit

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As we moved up
the summit, the
plants and wildlife
changed drastically: from thick
jungle, to spongy
moss, to open
grasslands.

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Strange Lifeforms of Madagascar:

ID by Dr. Mary Endress:
“Infructescence of Ephippiandra
from the plant family Monimiaceae. A very weird one!”

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The VinePro is a camera head mount for
a GoPro made entirely from jungle vines.
The jungle is full of vines, you're constantly on the look-out to keep yourself
from tangling and stumbling. It is basically impossible to spare a hand to hold
a camera and capture footage of your
amazing trek through the wilderness. But
these same vines that are getting in your
way can be re-purposed to aid your way!

Take a stroll through the jungle and don’t
forget to bring your knife. Look up and
down the trunks of trees, on the ground and
for vines hanging in the air, especially up
high.
For the head mount I recommend collecting the following
types of vines:
- One rather sturdy, yet flexible vine that can bend around the
curvature of your head and be long enough to wrap around
your head 2 or 3 times
- Some straight bamboo vine or twigs
- Thin and really flexible vine

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First take the sturdier vine and wrap it twice around your head. I had two
shorter pieces of sturdy vine, so my design connects these two through
the weaving around 4 warps, but you can also wrap the same piece of
vine around twice and then have only 3 warps.

This is maybe the trickiest part of the whole process, to hold everything
in place in order to weave, before the weaving itself begins to hold things
in place. Try to hold the two sturdy vine rings in place while you take the
most thin and flexible vine you have to begin weaving these 3 or 4 ends
(warps) together. If you have never woven before, examine the photos
closely to see how the thin vine (weft) travels in and out, back and forth,
up and down between the sturdier vines (warp).

Take two short pieces of the
same sturdy vine (or a thinner vine or twigs would also
do) and bind them to the opposite side of the head rings
to form a frame that fits the
camera perfectly. See photos that show how the frame
keeps the distance between
the head rings and allows the
camera to push through.
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Again, use a thin and flexible vine to create the joints of the frame. Start
at one corner (intersection of two vines) and begin binding the corners of
the frame together by wrapping the thin vine around diagonally from top
to bottom, then from right to left, and diagonally back to the top.

After fixing one intersection continue to wrap the vine once around the
frame to the next corner and repeat the binding process described above.
Continue this two more times until all four corners of the frame are fixed.
Find a tight loop to poke the end of the vine back through before cutting
it, this will keep it from unraveling.

To secure the GoPro in the head ring frame this
design mounts some sticks on the back of the
camera so that it can fit through the frame from
behind without falling out.
Take 4 stiffer pieces of vine that are slightly
longer than the width of your camera. Then take
the flexible vine (thinner the better) and wrap it
around the GoPro and then weave it through the
pieces on the back. Repeat this over and over
again until you feel your camera and the vine
wrapping/weaving are securely fixed together.
To end the weaving feed the end of the vine
through a tight gap and pull tight.

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Don’t forget when
wrapping to leave
gaps so that you can
still access to the two
buttons on the GoPro
camera!

Both parts of your vine rig are complete. Fit the camera through
the head ring frame and try it on. If it is uncomfortable try adding
a piece of soft fabric or even some leaves or moss between the rig
and your forehead.

Treatment: Foot Rot
• Pound a lemon against
a tree to get its insides
soft and juicy
• Boil it over a fire
• Get some friends to hold
down the infected (it’s
going to hurt)
• Rub the boiling lemon
juice deep into feet
• Wait 6 hours

Malagasy Jungle Lemon

Remedy:

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Making with Nature
To make new digital devices in the forest, there is a lot of gear you have to carry in.
Some crafting materials, however, can be left behind if you focus on building with
the plants and materials found in the forest.
Making with nature offers several advantages for the Wildhacker!
Lighter Loads
• Less stuff to carry into the forest!
• Less stuff to carry out!
Making is Exploring
• Using the forest as materials encourages exploration of your environment
• Building with the natural artifacts helps you understand special qualities of the
organisms around you! Some are rubbery, some are twisty, some are toxic!
Bio-Inspired Design
• The way the forest deals with structural challenges can inspire new designs!
Indigenous Materials for Animal Interactions
• Making “cyborg” devices with materials common to the environment can prevent the introduction of foreign materials that could affect the behaviors of the
creatures you are studying.
• The animals have already adapted ways of dealing with sticks, plants, and
rocks indigenous to the area.

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Not only does this help you appreciate your adventure,
but it can also safeguard your research from being
sidetracked to faulty directions. Sharing and communicating with your crew is important to ensuring success!

It’s easy to get carried away with work on an expedition. There are always too many things to do and
too little time. It’s important however to make time to
reﬂect on the journey wivth your group.

Reflective Activities for Groups

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Game: Contact
This is a fun game that
promotes bonding while reviewing important features
of the day
• 2 people are paired up
• They count, “1,2,3” while
staring each other in the
eyes
• After 3 they say a single
word
• The duo wins if they say
the same word

Give everyone a writing instrument and
medium (can be paper or a leaf!). Set a
time limit and have them make maps of
their journey, how they organize their gear,
or concepts in their research! Have everyone present their maps to the group!

Activity: Mapmaking
Maps are a terrific way to organize
thoughts and experiences. Viewing others maps shows lets you understand how
they encounter the world, and can point
out aspects of your journey you may have
missed!

Dissemination Research
Our adventures lose value unless we can share and reflect upon them with others.
An important aspect of this expedition was testing out ways to communicate in
real-time with public audiences from extremely remote locations.
Like all the challenges in this project, our ability to share information in real-time relied upon many other factors. We needed power for our computers, satellite internet
service, and also clear skies and nice weather.
With our limited bandwidth and limited electrical power, our standard practice
became:
• Write message or diagrams on analog media (notebook, or leaf)
• Photograph
• Resize photo in Picasa to 650px
• Upload to Twitter
• Email to homebase contact at Openexplorer who transcribes the texts.

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“With [a] discovery, if you leave it, if you
die with it, and are buried with it then
you are not doing your job as a scientist…As my advisor used to say, ‘Science
unpublished is science un-done.’”
-Dr. Barrett Klein

Live-tweeting adventures from the “internet rock”
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The Death March

The porter named “James Bond” offered his services to the
infant of a local villager.

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Hired adorable village kids to carry our packs the last hour of the march

Further Documentation
As the Hiking Hacks progress, and we continue to distill these amazing experiences, you can find more documentation in the following
forums:
Twitter:
@openplusea, @ant_explorer, @hikinghack
Flickr:
Plusea, Blorgggg, BrianLeeFisher
Youtube:
Blorgggggg, Plusea
Instructables:
Blorgggg, Plusea
Research Sites:
fisherlab.org
plusea.at
digitalnaturalism.org