Battery Driven Wifi Temperature Sensor

Some notes how to build a sensor that can be driven by 3 AA rechargeable battries for up to 1 year.


The web is full of examples how to build a temperature sensor. I want a sensor that is connected to my Wifi, can be driven by batteries for months and has an adequate resolution and precision.

This leads me to the following parts:

  • ESP-01
  • DHT 22
  • MCP1700
  • 3 AA rechargeable batteries, should be ‘ready-to-use’ (see below why)
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