The scenario
Design a load monitoring circuit for an ESP32 using an ACS712 Hall effect current sensor to measure DC current without breaking the load circuit.
What is in this drawing
Read the decisions behind it.
01
Select ACS712 sensor for non-invasive current measurement
02
Add RC filter to reduce noise on ADC input
03
Use LM1117 regulator to provide stable 3.3V for ESP32 from 5V supply
When using an ESP32 to monitor DC current of a load up to several amps in IoT or automation projects.
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