![]() ![]() USB adapter (take a look here for more details about the USB Adapte r) Li-Ion Battery Module. Optional 100n capacitor from A1 to ground for stable readingsįloat Aref = 1.063 // change this to the actual Aref voltage of -YOUR- Arduino, or adjust to get accurate voltage reading (1.000- 1.200)ĪnalogReference(INTERNAL) // use the internal ~1. As an extension from the temperature and humidity sensor for my car, I then used a voltage divider resistor network between the microcontroller and my cars. Step 1: What We Will Need: CBDBv2 Evo Board ( or any other ESP8266 Board you may like but who has voltage/current measurement capabilities) INA21x - Current shunt monitor.
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