Designing a Clean 3.3v Power Rail From a 9V Battery for ESP32 Projects
Never let your ESP32 reset during Wi-Fi bursts—discover how to build a rock-solid 3.3V rail from a dying 9V battery.
Designing Multi-Rail Power Systems for Mixed 3.3V and 5V Arduino Sensor Arrays
Use an LM7805 and AMS1117-3.3 to cleanly power mixed-signal sensors—discover how proper rail design prevents cascading failures in dense Arduino arrays.
