HAT or pHAT for Raspberry Pi. Designed with the Pi Zero W in mind, so it shares the footprint of the Zero.
HAT has an ATmega328PB connected via I2C, SPI and UART,allowing both flashing, and many forms of communication.
Included a space for a Mini DC-DC voltage regulator. These are good for 3A of power, but make sure to solder the 5V pads and cut the ADJ pad lead.
Headers for SPI(ICSP) and both...
Schematics for a robot control system that uses a Raspberry Pi Zero, an Arduino Pro Mini, some voltage regulators, some motor controllers, and a rat's nest of wire.
These shift registers connect to the Arduino and help control the motors.
A stepped-motor controller for three steppers using Trinamics 2130 compatible "SilentStepSticks". Also supports upto two hobby servos and has two power FETs for on/off control of loads (including inductive ones).
Can be used stand-alone using the ESP32 on-board which supports WiFi and a web-based UI when running the [companion software called RBotFirmware](https://github.com/robdobsn/RBotFirmware)...
**Motherboard for LittleBOT.**
LittleBot is a small robot equipped with a control card with an Arduino Nano. The chassis is made of aluminum and is moved by two small motor-driven motors made entirely of metal that move a pair of tracks.
The robot has some sensors that allow it to detect some parameters including brightness and temperature. A front-mounted sensor powered by a servomotor allows t...