Arduino Solar Tracker with USB Phone Charger – DIY Tutorial
Published at : 23 Dec 2025
In this tutorial, I will show you step by step how to design and build an Arduino Solar Tracker with a Lithium-Ion battery and a USB phone charger. The design will use photoresistors as solar sensors and a gear motor to turn the photovoltaic cells that will charge the battery. An Arduino Uno will be used for prototyping and an Arduino Nano will be used for the final product. Though this is a small project, it could easily be scaled up by using larger solar panels and a liner actuator. Below is a list of parts in case you want to attempt a similar project at home.
The following are affiliate links for similar products I used in this video. Using these links will not affect the price for your purchase but may result in a small commission for me, allowing me to keep making helpful videos.