Power Monitor Board

Board photoAssembled power monitor board.

I designed this board to monitor the power system in Intel Labs Seattle’s mobile robotics platform. It provides four current and four voltage measurements, and interfaces with a PC via USB. Readings for all of the channels can be read at over 100 Hz.

Specifications

  • Microcontroller: 8-bit AVR
  • Interfaces: USB via FTDI chip
  • Voltage measurement inputs: 4 voltage dividers using precision resistors, up to 80V
  • Current measurement inputs: 4 current sense amplifiers with 0.025Ω sense resistors (up to 4A)