This is a board designed for opto-isolation. This board is helpful for connecting digital systems (like a 5V microcontroller) to a high-voltage or noisy system. This board electrically isolates a ...

The SparkFun Arduino UNO R4 WiFi Qwiic Kit is a great way to start with Arduino and the Qwiic-connect system. This kit includes everything you need to build a WiFi-enabled project, including an ...

SparkFun has just launched the “IoT RedBoard – RP2350” and “IoT RedBoard – ESP32” boards with Arduino UNO R4 form factor based on respectively Raspberry Pi RP2350B + RM2 wireless module and ...

Here’s proof that you can build cool stuff with simple tools. This self-balancing unicycle uses an Arduino and a five degree of freedom IMU from Sparkfun to keep the rider upright. Well, it&#… ...

Opto-isolation is the obvious answer (until TI’s non-opto-isolators are easier to get) to remove ground voltage variations, and that got me thinking about adding a few components to the input side of ...