How to Set Up the DHT11 Humidity Sensor on an Arduino
How to measure temperature and humidity with the DHT11 and an Arduino. Diagrams and code are provided to display readings on an LCD or the serial monitor.Arduino tehNiq: GPRS module with M590 for SMS projects ...
For protect M590 chip, I powered M590 GPRS module with external 4.2V and put a logical interface 5V 3V between Arduino and M590 module kit.
sim800l arduino wiring diagram Gallery