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Current Sensor Board

Overview

The Current Sensor Board contains an Atmel AVR AT90S8535 running at 8MHz which samples six ADC current inputs and uses the remaining two ADC inputs to control an integrating charge counter and packages the results up into data packets which are sent to the Master Board.

The board is isolated from the Master Board's voltage supply so that it can run with ground at battery earth (as much as possible of the car's system run isolated from both the battery and the chasis for safety).

• CPU Circuit Diagram - including the AT90S8535, reset, SPI, AVcc, 6N137
• Integrator Circuit Diagram - the current integrator
• Current Channel Circuit Diagram - including the LM358 and the LM317 voltage regulator
• PCB Layout - showing the layout of the PCB
• PCB Film - single sided film needed to etch your own board
• Protel Files - all the protel files associated with the board