[Carl] wanted to get more data out of his system. He managed to build his own monitor using an Arduino. The trick of this build has to do with how the system works. The panel includes an LED light ...

The heart of the device that [Kerry] designed is based on 6 power MOSFETs, a few operational amplifiers and an Arduino compatible ... MOSFETs (and therefore the load), the MCP4921 Digital to ...