All posts by igendel

Adding a UART Interface to a USB Relay Board

This Chinese “8-Channel USB Relay Board” requires a 12V power supply, and it’s also supposed to plug into the PC for convenient software control. But there was nothing convenient about the software, and I wanted it to work directly with Arduino and other MCUs anyway. Here’s how I replaced the USB interface with a basic UART.

USB Relay Board Hack Closeup
USB Relay Board Hack Closeup

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Arduino And The VC0706 JPEG Camera

An Arduino equipped with a camera sounds like a great start for a wide variety of projects. Unfortunately, the Arduino’s hardware is really not up to the data volumes and rates required for meaningful image processing. This problem has a few partial solutions. In this post I will present one of them – a serial-connection camera with the VC0706 chip, and the dedicated code library by Adafruit.

The camera module
The camera module

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