Little Wire is multi-featured USB controlled Open Source Hardware tool packed in a minimal form factor designed by ihsan Kehribar.
Official webpage : http://littlewire.cc/
I came across the Little Wire a few days back. I thought it was a pretty cool idea to have a few GPIO’s accessible over USB. More than that, it also offers several serial protocols (I2C, SPI, etc), dual channel ADC, and even works as an AVR programmer as simulating the avrtinyISP, all in a neat little package.I especially liked it for using a software implementation of the USB protocol on an attiny mcu, which means I should be able to use an attiny in place of the much larger (and more expensive) FTDI chip or other small USB controller packages.
- usbtinyisp compatible AVR programmer.
- 4 channel GPIO.
- ADC with 10 bit resolution.
- 2 parallel hardware PWM outputs.
- SPI interface.
- I2C interface.
- 1-Wire interface
- WS2812 RGB LED interface.
- Multiple device support.