Homemade weather station: Arduino Uno R3 + DHT 11 + ESP-01
Temp and monitor and alarm system for your environment. I have a small server room need to monitor 24/7 and alarm when humidity, temperature go over a fixed value: like 25 C degree and 70%. Arduino Uno R3 may be the most popular open source hardware with lots of modules following. ESP-01 is the cheapest wifi module, DHT 11 . Here is my codes: /*-------------------------------------- * Getting temperature and humidity from DHT 11 and upload to thingspeak.com * You get this code from https://lotus-vp.blogspot.com , * please keep these comments when copying these code, thank you! * Connections * DHT | Arduino Uno * --------------------------- * VCC(1) | 5V * DATA(2) | 2 * NC(3) | x * GND(4) | GND -------------------------------------*/ #include <Sof...