GitHub - 8n1/ESP8266-Tiny-Door-and-Window-Sensor: Battery powered door and window sensor with ultra low standby power. Arduino, ESP-12, Reed switch, ATtiny, LDO
![ESP 8266 Mailbox Notifier using DeepSleep and Blynk | Arduino projects diy, Cool arduino projects, Electronics projects diy ESP 8266 Mailbox Notifier using DeepSleep and Blynk | Arduino projects diy, Cool arduino projects, Electronics projects diy](https://i.pinimg.com/474x/3e/33/f6/3e33f6dc6a1c07d4393f596b559a4a04.jpg)
ESP 8266 Mailbox Notifier using DeepSleep and Blynk | Arduino projects diy, Cool arduino projects, Electronics projects diy
![arduino - Latching circuit for ESP8266 with coin cell and Reed Switch - Electrical Engineering Stack Exchange arduino - Latching circuit for ESP8266 with coin cell and Reed Switch - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/x0gFL.png)