Lazy 7 / Quick Build Edition
Introduction: Lazy 7 / Quick Build Edition
Update - 2021/07/15
Sketch v7 available. I also recommend having a look at the notes about electronics when building one of my things! https://www.instructables.com/ClockSketch-V7-Part-...
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Yes. Another one. I'll copy/paste the infos I've put up on Thingiverse here, this documentation is only really needed for the led strip routing.
Recently I published the 7 Segment Clock - Small Printers Edition, the first 7 segment display I built using led strips with 30 leds/m.
One thing that wasn't really possible was using a single led strip for the whole clock, like Lazy 7 / One.
But Lazy 7 / One does require lots of material and is not really something you're going to print within a few hours.
Then I remembered I only had published one 7 Segment Clock using a vertical layout, the Retro 7 Segment Clock - SE. And I'm not really a big fan of that one. The "open frame" design doesn't help readability in my opinion and it doesn't feature dots between HH/MM.
This is the result. Some kind of mix between the SPE and L7/One. It's a bit tricky coming up with reasonable names - but at least I'll try to stick to "Lazy = Single Strip", just like inside the Lazy Grid Clock v2 ;)
This one requires a printer with a build size x/y of at least 179.5mm x 107mm, Z max is somewhere around 20mm.
There's 2 leds inside each segment. 4 digits = 28 segments = 56 leds. Adding the
two dots (2 leds each) we end up using 60 leds, no "wasted ones".
I did several changes to (hopefully) make it fit on printers like the Prusa Mini. 1014
The goal of this thing was to make it an easy and fast print and build - so slicing everything down to small parts again would have somehow defeated one of the design goals...
Step 1: Printed Parts / Settings / Sketch
Wall Widths are always multiples of 0.5mm, so I strongly recommend using an extrusion width/line width of 0.5mm when slicing/printing this.
I recommend printing everything except the diffusers using black material.
PETG will be quite wobbly on thin parts like this.
Material requirements:
ca. 150g black PLA
ca. 50g transparent/natural PLA
There's some screenshots of the previews at 60mm/s base/infill speed, 36mm/s outlinesand 42mm/s solid layers. Layer height is 0.25mm, 2 shells/perimeters.
Avoid elephant's foot on the frame part. It will make putting in the diffusers harder. All parts are chamfered towards the build plate so this shouldn't be too much of a problem.
I've started using Cura (4.8.0) more frequently ~10 days ago. So if you're interested in having a look at the settings I've been using to get the fuzzy skin on the outside and grid infill on the first layers, have a look at the Cura project file (L7-QBE-Frame.3mf).
Also added the project file I was using for printing the diffusers (L7-QBE-Diffs-All.3mf).
Step 2: Requirements / Instructions
Electronics are the same as on most of my other things. So for schematics and/or details please have a look at the instructions of those:
Schematics, notes about buttons and required parts (except screws and led strip):
S7ripClock - Basic Edition
The led routing is close to this one, so if you're looking for more pictures of that:
7 Segment Clock - Small Printers Edition
There's also quite some info on the Retro 7 Segment Clock over on Thingiverse.
It's based on the same sketch as the other ones, so features/instructions from this video are also valid for this one: Features/Usage Instructions
Required Parts
To build this clock you don't really need that many parts. Apart from the electronical components (see S7ripClock documentation) you will need:
2m of led strip, WS2812B, 30 leds/m, 60 total
(other restrictions apply here, too. Like no coated/waterproof ones, thin ones only)
8 screws, M3x8-12 (M3x10 min. for the case screws when using optional feet)
Printed Parts
1x L7-QBE-Frame.stl
1x L7-QBE-Frame-Cover. 646