We emulate the TDG series remote controls using the GSM Shield. It’s not been long since we presented our GSM shield for GSM/GPRS modules SIMCom, QUECTEL, FIBOCOM etc. that was born to be incorporated in Arduino-based projects involving cellular connectivity; now it’s time to move on to the first practical application, which in this case…
A new useful and intuitive Android app to easy manage our TDG133 GSM remote control. In this blog we often use the SIM900 GSM module for remote control applications, like the TDG133 (2 IN / 2 OUT) , TDG134 (Gate opener), TDG139 (Temperature control) and TDG140 (2 IN / 2 OUT with DTMF) remote controls. They are home automation devices that…
PC configuration software for all remote controls described in the last four issues. This application is used to set all parameters via PC, instead of using the boring and expensive SMS configuration system. Download “Configuratore TDG v.2.3.0.0” (Source code VB .NET 2010) In the articles devoted to the remote GSM modules, we have repeatedly mentioned…
It allows you to remotely control up to two different electrically controlled units and to remotely read the condition of as many devices or the presence of tension on power lines. We describe the simple remote control, obtained by adding to the regular circuit, two optocouplers and both relays, together with the basic components. The…
In order to understand the different functions, let’s now take a look at the schematic diagram of the unit. 2 IN and 2 OUT Schematic Diagram The entire control is handled by a Microchip PIC18F46K20-I/PT microcontroller, programmed with a firmware that controls the GSM/GPRS module’s activity, reads the logic condition of the two opto-isolated inputs and sends…
Now that we have seen the electric scheme, we can work on the practical aspect of the project; let us state in advance that its making presupposes a double-faced printed board with metallic holes, using many SMD components, all this in order to reduce the overall size of the device.
Now you have to get to know the commands needed to manage it and use them at their best. Relevant commands must be given by SMS, on the understanding that a message can contain multiple messages properly separated; some commands, due to their importance, they require a password which is 12345, set by default during…
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