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4tronix Improve low speed handling for motors
Version 10 of the firmware add low frequency PWM for the motors when low speeds are selecting.
Latest commit 862a0d7 Apr 19, 2018

readme.md

Picon Zero

Picon Zero is a Raspberry Pi addon in the form factor of a Pi Zero. It contains an ATMega328 with the Arduino bootloader. The ATMega328 is connected to the Raspberry Pi via I2C and handles all the interface to the I/O ports and motor drivers. Specifically, the ATMega328 allows:

  • Dual H-Bridge motor driver (DRV8833)
  • Standard digital outputs (On / Off)
  • PWM outputs (0 to 100%)
  • Servo outputs (-90 to +90 degrees)
  • WS2812B compatible smart pixels (up to 100 pixels)
  • Standard digital inputs (On / Off)
  • Analog inputs (0 to 255)

Picon Zero Released Files

All files are Licensed under Creative Commons BY-SA See creativecommons.org/licenses/by-sa/3.0/ for details

  • piconzero.py (this is the main Python library)
  • various python example files
  • PiconZero08.ino (this is the ATMega code)

Programming the ATMega

You can reprogram the ATMega with your own code by using a USB to Serial converter that has the following pinout: