Make a Megaphone
Introduction: Make a Megaphone
in this Instructables, I will instruct you how to build a megaphone
for this idea, I got inspired by a video on youtube of a man making a megaphone out of paper
I really like the idea but it wasn't satisfying enough for me it needs to have electronics and 3d printing in it it needs more power I need to make it alive haha
Supplies
PLA filament ( whatever color you like )
M3.5 nuts
M3.5 screws
boost converter
77mm /8ohm speaker
capacitors(values in schematics)
resistors(values in schematics)
lm386N-1 chip
wires
switch
push button
18650 lipo battery
Step 1: First Watch the Video
make sure first you watch the video to fully understand how it works and how to mount it
Step 2: Print All the Parts
upload and print all the STL files
Step 3: Gather the Parts
gather all your parts so you can make it quickly and enjoy your project without having to stop every time for something missing
Step 4: Make Your Circuit
cut a perf board into a 70mm circle and solder your parts according to this diagram
it is very important that you choose the same values to get a good result but if you know what you are doing well feel free to modify it however you like
if you want the <PERSON> files for the PCB contact me and will send it to you because I can't upload it here on Instructables (I don't know why actually)
Step 5: Mount the Hand
mount the handgrip to the main body
paste glue on the battery holder and put it in its place
put the push button into its hole, solder the wires and pass them through the hole and then slide the grip in the main body and close it with the lid with nuts and screws
Step 6: The Main Part
put the circuit and the mic in it's desired place and then solder their wires and close the back with M3.5 screws in their appropriate holes
Step 7: Mount the Cones
put the speaker in the big cone than mount the inside cone to hold the speaker inside
after this put some foam on the back of the inside cone to decrease the noise and the oscillation
Step 8: Close Everything Up
solder the final wires check voltage one more time before final touch and then close everything
Step 9: Congratulations
congratulations now you've just made your own megaphone
please share with us your megaphone if you make it and share this project with your friends and follow me on youtube for more similar projects 996