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| ESP32's ADC suffers from poor response at low voltages, causing non-linearity. This project introduces a summing amplifier circuit to linear...

| Tired of the loud fan on your ET5410A+ DC load? This DIY mod quiets the unit at light loads and boosts cooling at high loads. By adding a di...

| Extend your UPS and solar battery life! PbMonitor shows real-time voltage, current, and temperature per battery — built with ESP32-C3 and MQ...