I was able to salvage a temperature and humidity sensor off of an old printer. It is extremely similar to the sensors available from SparkFun, and I am hoping to incorporate it into my next version of "Black Box".
For this project you will need:
- 4 wire temp/humidity sensor
- 4 jumper wires
- a micro controller
Check Out Our Other Accounts! Like, Subscribe, and Follow to keep up to date with our latest projects. :-)
Step 1: Wiring
Because I salvaged my sensor I needed to find schematics in the service manual (the exact wiring will depend on your sensor).
I experimented with the connections to determine if the data was returned as analog or digital.
Step 2: Coding
After some experimenting with reading the data, I believe that the temperature is exported as analog values in fahrenheit, and I can only get the humidity value to raise to a maximum of 7 by blowing humid breath onto it.
I am unsure how the data may be exactly transformed, any suggestions would be very helpful :-)
Have a great day! :-)