Diy Electronics

Nokia 3310 LCD: Nokia 3310 LCD driven by a PIC 16F684The Nokia 3310 LCD is undeniably one of the best LCDs to use on any microcontroller project. The interface can be driven with a simple bit banging type SPI interface and it produces stunning results. The displays cost 99p on ebay, so its worth grabbing a few when they come up.

Subaru Select MonitorThis project looks at building a display that will connect to a Subaru's OBD style connecter in order to display engine parameters to the driver. Almost anything can be diplayed including things like battery voltage, manifold air pressure, injector duty cycle, wastegate duty cycle and many more dependant on car. This would allow you to check vital engine parameters on highly modified and tuned engines as well as completely standard engines. Instantaneous fuel consumption can be calculated from injector duty cycle, knowing the injector size and the speed of the vehicle. Using some more maths an average fuel consumption can be calculated for the journey.