![1~7PCS Supports 3.7v Lithium Battery Power Wireless Module Temperature Sensor Iot Development Board Smart With Pcb Antenna - AliExpress 1~7PCS Supports 3.7v Lithium Battery Power Wireless Module Temperature Sensor Iot Development Board Smart With Pcb Antenna - AliExpress](https://ae01.alicdn.com/kf/S52bad5d5df1a4eb19104cb0b77c7edfe3/1-7PCS-Supports-3-7v-Lithium-Battery-Power-Wireless-Module-Temperature-Sensor-Iot-Development-Board-Smart.jpg)
1~7PCS Supports 3.7v Lithium Battery Power Wireless Module Temperature Sensor Iot Development Board Smart With Pcb Antenna - AliExpress
![Optimizing ESP8266/ESPHOME for battery power (and making an ice bath thermometer as well) – Necromancer's notes Optimizing ESP8266/ESPHOME for battery power (and making an ice bath thermometer as well) – Necromancer's notes](https://ncrmnt.org/wp-content/uploads/2021/12/IMG_20211128_140630-2-edited.jpg)
Optimizing ESP8266/ESPHOME for battery power (and making an ice bath thermometer as well) – Necromancer's notes
![I recently finished the prototype for a battery powered ESP8266 based temperature and humidity sensor with eInk display. Currently working on a custom PCB. : r/arduino I recently finished the prototype for a battery powered ESP8266 based temperature and humidity sensor with eInk display. Currently working on a custom PCB. : r/arduino](https://i.redd.it/q0c5386r08p61.jpg)
I recently finished the prototype for a battery powered ESP8266 based temperature and humidity sensor with eInk display. Currently working on a custom PCB. : r/arduino
![Amazon.com: ESP8266 NodeMCU ESP-01 ESP-01S WiFi Development Board DS18B20 Temperature Humidity Sensor WiFi Wireless Node Module(Wireless Node Module) : Electronics Amazon.com: ESP8266 NodeMCU ESP-01 ESP-01S WiFi Development Board DS18B20 Temperature Humidity Sensor WiFi Wireless Node Module(Wireless Node Module) : Electronics](https://m.media-amazon.com/images/I/51Z0+m9sXZS.jpg)