Components and supplies
Solid State Relay Module - 8 Channel
Arduino Nano R3
DHT22 Temperature Sensor
Resistor 10k ohm
Waterproof Momentary Push Button Switch
Single Turn Potentiometer- 10k ohms
Resistor 220 ohm
Project description
Downloadable files
Exhaust Fan Controller
Exhaust Fan Controller
Comments
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Anonymous user
6 years ago
Have error message on one line Arduino: 1.8.9 (Mac OS X), Board: "Arduino/Genuino Uno" /Users/noelsons/Downloads/exhaust_fan_controller/exhaust_fan_controller.ino: In function 'void loop()': exhaust_fan_controller:143:15: error: 'dht' was not declared in this scope float t = dht.readTemperature(); ^ exhaust_fan_controller:146:16: error: 'h' was not declared in this scope if (!isnan(h) && !isnan(t)) { ^ exit status 1 'dht' was not declared in this scope This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences. any help would be great try to help with science project
alan_dewindt
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Anonymous user
3 years ago
cant get this to show temp cant see anything wrong or am i missing something simple