DHT_Simulator
Arduino sketch to simulate a DHT22
Description
The DHT22 is an often used sensor and many libraries are written for it including my own DHTNEW library. To better understand the protocol and to be able to debug my library I wrote a simulator for the DHT sensors in 2014.
The simulator can be used to test applications to that use a DHT sensor, e.g. to get high alarm temp or whatever.
Currently the code uses two analog ports to get some value for temperature and humidity. Just connect two potmeters to play and simulate increase and decrease of the temperature and humidity.
0.2.0 version
- added flag for random generation of data
- added flag for debug
- explicit support ESP32 & ESP8266
- added counter # samples generated per second ==> so one sees it still runs
- added error and debug messages // some commented
The simulator is not tested extensively so please report bugs.
Future
Idea is to use the code of the simulator in combination with a Senserion or two separate sensors (DS18B20 + ? ) to provide an accurate temperature and humidity. These could then be readable with any DHT library with the performance of a DHT (~ 5ms). (when time permits)
Operation
- adjust the pins in the head of the program to meet your setup
- compile, connect, run
And have fun.