Ultralightweight battery-powered thermometer using ESP32 and MQTT with home assistant integration.
Pointless Button Hardware Version 2
Official repository of the S-NODE-1 IoT project, a solar powered environmental sensor. The repository contains firmware, software and HW files of the project.
Ultra-Low Power Single push button ON/OFF controller based on ATTiny13/13A/25/45/85 for other microController and circuits application
Universal Arduino based data logger to SDcard.
Arduino compatible low consumption battery powered device with uSD slot and real time clock
Battery-powered wildlife camera based on the ESP32-CAM board
DitroniX GTIE ESP8266 ADC GTIL CH340 OPTO CT Current Clamp Battery Powered Energy Monitor GTIL2
A wireless, battery-powered recording light or "do not disturb" light. The light is controlled with two buttons on a webpage. To save power, the MCU enters deep-sleep after 11 hours, for 13 hours.
Firmware for a battery powered Feather M0 LoRaWAN particular matter sensor (BME280, SDS011)
Time Watcher, Timer, Stopwatch on ESP8266 WeMos with display shield
Battery powered Orange Pi Zero for Pentesting Wireless Networks
A lightmeter for an analog camera powered by a Infenion XMC2GO board. Features 5 buttons, OLED screen with reading and a VEML7700 light meter IC. Powered with a LIR2032 Li-ion cell.
Experiments with making little earring PCBs with LEDs and a small battery
Sigfox temperature & humidity sensor
Battery-powered Wi-Fi Repeater based on the ESP8266 board, than can be used to extend a Wi-Fi Network range in areas where it could be difficult to use standard Wi-Fi repeaters
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