A room sensor with the heat source kept out of the way
An ESP32 temperature and humidity station concept that tests placement before designing the enclosure.
The processor is warm. The sensor is supposed to measure the room. Those two facts should influence the enclosure.
Mount a documented temperature-humidity sensor away from the controller and power components. Begin with USB logging on an open base, using a supported ESP32 board and the sensor manufacturer's connection instructions.
Three comparisons worth keeping
- Placement: compare positions without changing the rest of the setup.
- Activity: note whether controller workload or wireless reporting changes the reading.
- Enclosure: compare the ventilated case with the open arrangement.
Log timestamps and annotate restarts. Do not smooth away a jump until you know whether it came from the room or from your hardware.
Keep direct sun, vents and warm electronics in mind when choosing the final position. A neat box on a convenient windowsill may be measuring a very particular little climate.
This is a room monitor, not a calibrated weather station or a safety alarm.
Materials
- Supported ESP32 development board
- Documented temperature and humidity sensor
- USB supply and logging computer
- Separate sensor mount and ventilated enclosure
Build Steps
- 1
Log on the bench
Record timestamps and raw readings before networking.
- 2
Compare placement
Move only the sensor location and annotate each change.
- 3
Test the enclosure
Compare enclosed and open operation under similar conditions.