Dec 19, 2024 — 3 min read In the early development stages of PetDrifts, we faced significant challenges with our MVP, which included a custom PCB equipped with an ESP32 C3 mini, sensor, and a Li-ion battery. One of the major issues was the rapid draining of the battery, a critical problem in our IoT device designESP32 based circuit was consuming significant power. The code was simply collecting data from sensors and sending it over network every 5 minutes. We were using a small battery (~250mAh)...