Remote control via GPRS or GSM SMS using Arduino
Remote control, it has been a very profound things in the past. When I was a child, I always imagine that I have an equipment which can control all home appliances. Now, this has become a reality, and it is quite easy. Then I will step by step to show you how to remote control your home appliances via the GPRS/GSM SMS and relays.
At first, let me give a brief introduction about relay to you.
Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. It acts as a “low voltage controlled switch to control high voltage”, For example, if you want to control power of your washer or air conditioner, which is oftern110v or 220v,by microchip, such as AVR or PIC, it is necessary and safe the make your microchip control the relay first, and then control the power supply of those device with the relay.
With the GSM SMS, it is possible to control the relay remotely. You can send a message via phone to control the relay on&off. With this, it will convenient to control any device wirelessly, especially helpfully on irrigation, smart home, outdoor remote control etc.
So, let’s make such a “SMS control relay” with Arduino, GPRS/GSM and a Relay module.
For more detail: Remote control via GPRS or GSM SMS using Arduino
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