GSM based Relay control board using DTMF with IVRSDesigned by Valetron Systems in India
It had been a long time since I wanted to make a building automation system. In fact it was the first product I ever dream’t of making. Time passed and I didn’t quite find the time and interest to ve…Read More…
It had been a long time since I wanted to make a building automation system. In fact it was the first product I ever dream’t of making. Time passed and I didn’t quite find the time and interest to venture into it as I felt that building automation is an old concept and there are too many players doing the same stuff.
So, I designed this board, which can control the relays on board, based on the inputs provided either from the cloud or from a call using DTMF.
Features : For the first iteration we designed it to have the following features,
How the DTMF version works :
This is how the DTMF control of the device works.
State machine based code:
The code is written as a state machine and each state can be changed to perform a different action easily. If the user knows the flow, when he calls, he can quickly enter the inputs so that he doesn't waste time waiting to hear the audio instructions.
Multiple language support :
We can also add different language support and ask for selection of language in the welcome message and switch to playing only that language audio for that specific user.
This board can be used as a,
The first iteration of the board was successful and its available for purchase for trying it.
Whats in the package when you buy it :
1 Nos VALTALK-V1 board with Whip antenna and 4 nos 12V relays assembled. The demo firmare is loaded on the board and you can get started controlling any AC/DC appliances by calling the SIM card number using DTMF.
Note : microSD card is not present in package. Audio files used in demo are zipped and sent to you. Just copy them in your microSD card in MUSIC folder and you should be good to go.
You will need, 1 - 9V/12V DC power adapter to power the board 2 - 2G MICRO SIM card for network connectivity. 3 - MICRO SD card for copying Audio files.
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