GSM Remote Control – 2 IN and 2 OUT DTMF
Part 1 – Introduction
Excellent to remotely control via GSM the activation of engines, lightening or watering systems and alarm systems. It sends commands…
GSM Remote Control – Temperature Control
Part 3 – Assembly
For the GSM temperature controller we have provided a double-sided PCB with plated holes, made by photoengraving; once you have…
GSM Remote Control – 2 IN and 2 OUT DTMF
Part 2 – Schematic
Let’s now look into the schematic diagram; in it you can note the usual Microchip microcontroller governing the GSM/GPRS module…
GSM Remote Control – 2 IN and 2 OUT DTMF
Part 3 – Assembly
On the construction perspective, the remote control does not present many difficulties, just the obvious ones that appear when working…
GSM Remote Control – 2 IN and 2 OUT DTMF
Part 4 – SMS Command
The set of commands of this remote is divided into two categories: the SMS ones and the DTMF tones. The…
GSM Remote Control – Temperature Control
Part 4 – SMS Command
Commands can be given in two different ways: the first one is to send the SMS according to required syntax…
GSM Remote Control – Gate Control
Part 3 – Assembly
Up to 200 numbers can be stored and enabled to control the relay, which allows people to use the gate…
GSM Remote Control – Gate Control
Part 4 – SMS Command
Commands and settings can be sent by any cell phone via SMSs, as long as the message in question contains…