Mojo

Mojo (short for “More Joules”) is a small, inexpensive Notecard companion device that measures energy usage in a battery-powered system. Inspired by the Joulescope and powered by a low-power coulomb counter, Mojo is designed to give product builders an inexpensive way of measuring the performance, charge, and state of deployed applications intended to operate on battery power over long periods of time. Mojo is a small PCB that carries a LTC2959 coulomb counter from Analog Devices. The LTC2959 measures voltage, current, and charge accuracy to within 1% accuracy. The Mojo board includes two JSTs for connecting the battery in and out to a load like a Notecarrier. two JST cables and two Qwiic cables. Mojo is intended to be used with Notecard, and includes two Qwiic connectors for wiring the board to a Notecarrier or for daisy-chaining multiple Qwiic peripherals together. When used with Notecard running the appropriate firmware, Mojo “just works” and delivers periodic (and configurable) pow