This board forms part of a 9 * 18650 battery charger using 3 INA3221 chips to capture the voltage/current during charging.
The I2C INA3221 register data is written via the WEMOS PRO MINI to an INFLUX database every 10 seconds. The data is surfaced through a GRAFANA dashboard. Each INA3221 has its own I2C address hardwired through links to the A0 pin i.e. (0x40, 0x41, 0x42)
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[FULLY TESTED, but new revision coming with tweaks] An MSP430-based board including lipo charger (500mA), boost converter (5V), and wireless control (NRF24L01), to drive APA102C RGB LEDs. Each building block can be used on other boards to create a number of IoT boards.