AttoPilot Voltage and Current Sense

Description

This is a small voltage and current sense PCB. DC current is determined by measuring a voltage drop across a pair of parallel shunt resistors, then converted to a final analog voltage output by the TI INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. The PCB is supplied without leads or connectors. The pad sizes are large enough to accommodate 12 gauge heavy duty leads (see datasheet) but care must be exercised in soldering. Smaller gauge leads are considerably easier to solder without creating shorts Input resistor divider scaled for 13.6V Input voltage (recommended) 51.8V Max 44.7A Max Very low zero current offset Analog current output scaled for 3.3V ADC Self Powered 4 x 15 x 19mm Datasheet Example Sketch