Here is a picture of the faceplate that holds the LED bargraphs for air/fuel and pulse width as well as the pot to control the fuel mixture above 7psi boost.
Measures car water temperature to 1 degree resolution.
Simple Circuits for an Engine Control Unit or ECU
An introduction to the Wideband Fuel Mixture Display (FMD). This document describes how the 5300/5301 display works with the DIY-WB unit.
The system will test an individual's blood alcohol level by analyzing the breath exhaled into system, in which the sytem will decide whether to let the individual start the car.
A set of simple yet very bright helicopter night-blades. Also describes a 10 minute night blade construction.
The windscreen wiper's motor has a contactor, which connect the holding-current.