Combine 3D printing and electronics to make your own automatic rotary Zen garden. Learn how to use a 555 timer for motor control.

For this project, we’ll look at an easy way Arduinos can be used to make a power supply that will automatically adjusts its output to maintain a constant voltage or current.

In this project, we are generating a sine wave using the SAM4S DAC module.

This guide covers an Arduino attached to a charging circuit can be used to monitor and control the charging of NiMH rechargeable batteries.