Greenhouse Temperature Control, Humidity View, Local Internet Access,ThingSpeak Graphics,OTA,

My daughter ask for a heater for her mini-greenhouse. We found a 20W heater mat, and i made the regulation.

The data is send to a ThingSpeak channel:

https://thingspeak.com/channels/2058475

Temp1, sensor in substrate

Temp2, sensor in the greenhouse.

The heater mat is switched with a S202T2 static relay .

Rename the code as you want, but with .ino extension.

In the code, type your channel and API.

There is two DS18b20 and a DHT22, so 3 temp and 1 humidity sensor.

heater mat:

https://www.aliexpress.com/item/1005005159584562.html

There is two DS18B20 and a one DHT22, so 3 temp and 1 humidity sensor.

The regulation is made with the average of the DS18B20 temp.

I use a printed circuit with predrilled holes, and solder the components , let says, freely. All resistors are under the NodeMCU, because the wires are directly soldered to the pins of the connector.