The table shows the pin configuration of the Arduino UNO–based robotic arm. The red (VCC) wires of all servos are connected ...
Making a servo tester using an Attiny85 micro chip, Attiny45 also works for this project. This diy servo tester is as good as ...
This library gives easy control over the 8 pins of a (I2C) MCP23008 chip. This IC is strongly related tot the MCP23017 I2C port expander - https://github.com ...