Category Archives: Modules

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

Continue reading Adding a UART Interface to a USB Relay Board

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

Continue reading Arduino And The VC0706 JPEG Camera

Drawing With EVE

Recently, I was requested by a client to develop a certain control system using the VM800P35A. This “EVE development module” by FTDI Chip (EVE standing for Embedded Video Engine) is an interesting combination of an Arduino, a 3.5″ LCD display, and the FT800 Graphic Controller. In this “first impression” we’ll see what this module is all about, and what you can expect from it.

Back side of the VM800P35A module
Back side of the VM800P35A module

Continue reading Drawing With EVE