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.

Secure unlocking over Wifi with a remote control

Aparat pishti kada detektuje pokret preko PIRa. Inace (ATtiny85) spava.

Testing ESP8266 capabilities: WiFi, web server, LoRa, get current time (SNTP), connection to a display (ST7735, ST7789)...

Ultra-Low Power Single push button ON/OFF controller based on ATTiny13/13A/25/45/85 for other microController and circuits application

Plant Irrigation System

This project is a result of graduation qualification work "Development of a system for monitoring environmental indicators affecting plant life, with automatic irrigation function"

Experimenting with ESP32 Sleep Modes

Low power consumption Arduino external EEPROM data logger. More than one year operation at ten minutes interval with thermistor/SHT-31, LCD and three AA batteries.

Material for the workshop 'Low-power with ESP8266' held during TTN / IoT Groningen meetups.

Use ESP8266 to receive notifications from your outdoor mailbox

Small portable ESP32-based motion detector - Informs you if your pet or a burglar is at the back door and wants in.

Transparent HUD for an Airsoft gun that shows how many BBs are left in your magazine and keeps track of your number of kills and deaths during a match. A XIAO ESP32-C3 is used together with a SSD1309 transparent OLED display. An IR Transmitter LED and IR Receiver sensor is used to detect BBs. Video: https://youtu.be/BZJjDX5xyRM

FramI2C is an Arduino library for FRAM (F-FRAM, Ferroelectric RAM) non-volatile memory chips with I2C interface. Supports most common Cypress and Fujitsu I2C FRAM chips with densities of 4, 16, 64, 128, 256, 512, and 1024 kilobits (kb). Provides simple, easy to use read() and write() methods for reading/writing integral and floating point types …

ESP8266 Huzzah Deep Sleep Mode PIR Motion Alarm using IFTTT

Comparison of several ESP32 boards' power consumptions in different sleep modes