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- Where is your current shunt resistor?timemage– timemage2021-02-21 17:13:57 +00:00Commented Feb 21, 2021 at 17:13
- 1@timemage inside the MAX471: "The MAX471 has an internal 35mΩ current-sense resistor and measures battery currents up to ±3A. "dandavis– dandavis2021-02-21 17:14:39 +00:00Commented Feb 21, 2021 at 17:14
- @dandavis, interesting. I've not seen that done before with these.timemage– timemage2021-02-21 17:16:40 +00:00Commented Feb 21, 2021 at 17:16
- @dandavis it's actually an ESP32 but I only found arduino uno as the only microcontroller in the schematic software. That's why it says 12 bit ADCZaffresky– Zaffresky2021-02-21 17:20:32 +00:00Commented Feb 21, 2021 at 17:20
- That's actually a completely different beast, and make sure you compensate for YOUR ESP32's ADC's unique response curves. If you have a SMU you can easily calibrate this, but you can also do it using a reliable current source, a high-precision resistor, and a pair of off-the-shelf DMMs.dandavis– dandavis2021-02-21 17:22:36 +00:00Commented Feb 21, 2021 at 17:22
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