brake monitoring (usage)
We all know that misusing brakes can reduce efficiency. So Brake usage awareness could be nice. How about a simple system that counts the number of brake applications via an electrical signal from the brake lights.
Or
A pressure sender on a brake line, hooked to an Arduino. counts time at various pressures. Some math based on the weight of the vehicle, time and pressure. You could figure the amount of energy/number of gallons dissipated by brake usage.
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