ESP8266 Community Forum

- Sat Jan 10, 2015 12:10 pm #6913 I just finished the module to DHT22. This in https://github.com/javieryanez/nodemcu-modules/tree/master/dht22.

There is also an example that provides humidity in %, and temperature in Farenheit and Celsius.

I've put Pigs FLy in the credits, please watch it and tell me if you agree. Maybe you prefer a real name.

- Sat Jan 10, 2015 9:07 pm #6961 Javiery,

thanks for the code. works for me.

Time to try the module.

Dave

- Sun Jan 11, 2015 9:33 am #6990 Well done Javiery, thanks!

Re your note on the modulus calc, I see my error now, thanks for clearing it up. I had meant to make that an AND operation but used the mod operator instead. Good catch.

- Sun Jan 11, 2015 3:52 pm #7019

Highest bit of temperature is '1' it means that temperature is below '0'.

Code: Select allif bit.isset(temperature, 15) then
     temperature = -bit.clear(temperature , 15)
end


True!, my module does not work for negative temperatures. I'll fix it.