MAR9

On-board computer for VW Golf Mk2

If you are like me – driving an older car without a fancy board computer showing outside/inside temperatures and other trip info, don't be sad, because now you can build one yourself.

You might say that this one is a bit more techy than those in newer cars because besides showing the standard: time and date, indoor and outdoor temperature, trip time, engine speed (rpm); you get more: cooling water (coolant) temperature, oil temperature, board voltage (V), battery charging current (A) and fuel quantity (in liters). Sensors used in this application are: DS1305 A/D converter, 3x DS18B20 1-wire temperature sensors, DS1305 RTC from Maxim-IC and ACS752-100 100A current sensor from Allegro (just like in this project). Data is processed with ATmega8 and displayed on 1x16 LCD display with backlight.

The cool thing is that the source code (in C) is available for download, so you get a sample code for talking to all sensors used in this project.

© Erik_G2RP

[ Source: Erik_G2RP ]

On-board kompjuter za VW Golf Mk2 Link Comments (2)

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