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A simple temperature and humidity sensor, which you can use in your car, motorhome, tent, etc.

No more getting up and not knowing what to wear. Now you can know the outside temperature before leaving the comfort of your sleeping bag.

Forget about battery problems. With its epaper ink display and the use of deep sleep in the microcontroller, which only turns on once every 15 minutes to take a sample, the battery life is infinite.

In addition, with the built-in switch you can turn it off when not in use to save even more battery life.

The sampling time can be modified in the code. And I still don't know the actual battery life, as after a month of use it has never run out.

I have used:

Wemos ePaper 2.13
Wemos d1 mini
SHT31
Battery and BMS from merchandising powerbank

I have added the fusion360 project so you can edit it if you use a switch or a BMS with different dimensions than the one I used.

Yo can see the code in:

https://github.com/joaquin021/car_indoor_temperature_and_humidity_sensor

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Temperature and humidity sensor for camping

Model files

wemos-epaper-case-project.f3d

wemos-epaper-case-project.f3d

case.stl

case.stl

case_back.stl

case_back.stl

Model origin

License