After this tedious step, he designed a PCB that hosts an Arduino Nano to accept input, two MCP23017 GPIO expanders to give it enough outputs, and CD4066BE CMOS switches to trigger the connections.

The design consists of on an analog design for a high voltage (HV) module, a very minimalist analog signal processing configuration, followed up by Arduino DAQ instrumentation. While there are many ...

Here is a design for a full-featured motor shield that will be able to power many simple to medium-complexity projects. Adafruit invests time and resources providing this open source design, please ...