Hegemon Electronics has developed a "Plug and Play" device that connects to the J1708 bus and transmits the data from the ECM to an app on a SmartPhone/Tablet so a driver can carry his data with him.
Wanting to know the outside temperature, [Jamie Maloway] built his own temperature sensor that can be read with a Bluetooth device. Let’s take a tour of the hardware above from right to left. There’s ...