1 #58 ESP8266 Sensor runs 17 days on a coin cell/transmits data (deep-sleep)
Andreas Spiess builds an ESP8266 sensor that runs 17 days on a coin cell using deep sleep; a common starting point for battery-powered Wi-Fi sensor projects.
Topic
low power
5 videos. Ranked by independent recommendations, not by views.
2 Low Power Arduino! Deep Sleep Tutorial
Shows how to put an ATmega328 into deep sleep and wake it with interrupts or the watchdog, reaching microamp currents on a bare chip.
3 Low Power Arduino! Kill Power Circuit Tutorial
Shows an Arduino cutting its own power through a transistor after a button press, offered as an example for battery projects that need near-zero standby current.
4 #101 Long lasting DIY "Amazon Dash Button" using an ESP8266
Recommended Andreas Spiess video on a MOSFET latch that lets a microcontroller hold its own supply on after a button press, then cut it off when finished.
5 #386 How to measure low Currents for ESP/Arduino? Power Profiler, Otii, µCurrent Gold, Joulescope
Andreas Spiess compares tools for measuring tiny and pulsed currents, from the Nordic Power Profiler Kit II to the Joulescope; recommended when a multimeter misses ESP32 current spikes.
