CocoMake7
A jugaad ultra low-cost clone to the Makey Makey, but based on QTouchADC sensing, local manufacturing and coconuts
http://hackteria.org/wiki/QTouchADC_Library_for_Arduino
Contents
Board Design
On GitHub
Comparison to Makey Makey
Resistive sensing vs. capacitive sensing
NO NEED FOR SECOND ALLIGATOR-CABLE!
By using the QTouch ADC method, the analog pins of the microcontroller can be turned into capacitive sensor, without the need of any external circuitry.
Juugaad and Low-Cost
We make it as cheap as possible, including capability for local manufacturing. DIL-package, easy available parts, 1 sided PCB design and protoboard design, fancy PCB for collectors and geeks.
Which AVR microcontroller to use?
ATMEGA 328P
- very widely available, prize starting around 220 - 250 IDR (3$), 3.48 from Mouser goes to 1.82 if you buy 1000.
- The smd chip has 8 ADC channels, but the DIL seems to only have 6 ADC channel on Port C, ADC0 - ADC5
- prize, ca
Download ATMEGA328 datasheet
ATMEGA 32u4, same as leonardo or the makey makye
- only smd package
- High prize, 6.32$ from Mouser
- Hardware USB support!
ATTINY 84
- availability ok, prize starting around 150 IDR (2$), 1.50$ from Mouser, goes to 0.83 if you buy 1000.
- 8 ADC channels
What's the difference beetween attiny84A and attiny84 or Attiny84V (Low Power and expensive?) or Attiny841 (new edition of attiny84 or attiny84A)?
ATTINY 25/45/85
- availability ok, prize starting around 100 IDR (2$)
- only 4 ADC channels
Related Projects
HID Keyboard emulation
V-USB virtual USB emulation on ATMEGA
Trinket Pro, ATMEGA 328 with bootloader and HID key libary:
Makey Makes and Scratch
Makey Makey on Sparkfun - $49.95
- https://www.sparkfun.com/products/11511
- Datasheet, Schematics: Makey Makey Schematics
Make something like the Makey Makey with Arduino Leonardo
Vendor ID ?
What about this vendor ID. Does anyma have one?
From Adafruit Trinket Pro:
From V-USB