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PROJECT
169

Making an Automatic Rotary Zen Garden!

By Will Siffer

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

PROJECT
152

Control a USB Power Supply with an Arduino

By All About Circuits

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.

PROJECT
28

Use a SAM4S Microcontroller to Create a DMA Digital-to-Analog Conversion

By All About Circuits

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

PROJECT
433

Charge Batteries with an Arduino

By All About Circuits

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