Hey guys,

So I'm building a prototype for a simple on/off wireless system. For my receiver, I'm thinking about using this: https://www.banggood.com/315MHz-DC1...s=detail-left-hotproducts__3&cur_warehouse=CN

But my problem is finding an RF transmitter. I could easily find a module, but I really don't want to buy an Arduino for each system. I need to make 50 or so of theses systems, so finding a single board that I can buy in bulk is very important. I could also just buy a single button remote and take the case off, but again, I don't want to have to do this for 50 systems. So does anyone know where I can buy the equivalent of what's inside a 315MHz single button remote control??

Thanks,
ChanD

 

Have you search the internet? There are numerous low cost 315MHz Rx/Tx modules on the market.

 

Have you search the internet? There are numerous low cost 315MHz Rx/Tx modules on the market.

Right, but they are all modules. From what I understand, these require a micro-controller (an Arduino), I'm wondering if I can find just a single circuit that by just adding a battery and button will transmit to my receiver.

 

You do not need a microcontroller.
These modules send out an RF carrier that is modulated by a logic input to the TX module. Just add a pushbutton on the input pin or power supply.

 

Right, but they are all modules. From what I understand, these require a micro-controller (an Arduino), I'm wondering if I can find just a single circuit that by just adding a battery and button will transmit to my receiver.

The receiver is expecting a coded transmission and it will learn the code. Most of the Tx modules transmit only a carrier and canbe modulated by an eternal signal e.g. an arduino.
I did find this but I don't know whether its codes can be learnt by your receiver.
https://www.ebay.co.uk/itm/EV1527-L...496315?hash=item1c9fd319bb:g:rMQAAOSwZ35ZlXtP

 

So your saying I could use like this: https://www.banggood.com/H34C-315MH...5.html?rmmds=search&ID=47819&cur_warehouse=CN

And use a switch between the power, ignore the data spot, and it would work like a remote?

 

The receiver is expecting a coded transmission and it will learn the code. Most of the Tx modules transmit only a carrier and canbe modulated by an eternal signal e.g. an arduino.
I did find this but I don't know whether its codes can be learnt by your receiver.
https://www.ebay.co.uk/itm/EV1527-L...496315?hash=item1c9fd319bb:g:rMQAAOSwZ35ZlXtP

That looks perfect! My receiver does work on learning code so I believe it should work perfectly, thank you!

 

AlbertHall and MrChips, What do you think about this? https://usa.banggood.com/ASK-Wirele...ACh0dLg0HEAQYAiABEgKdzfD_BwE&cur_warehouse=CN

It seems to have both parts that I need, with capacity up to 4 buttons

 

I have worked with a number of different RX/TX modules and do not recall the RX responding to specific codes.
However for identification, security, and reliability, it would be prudent to encode the transmitted signal.

 

AlbertHall and MrChips, What do you think about this? https://usa.banggood.com/ASK-Wirele...ACh0dLg0HEAQYAiABEgKdzfD_BwE&cur_warehouse=CN

It seems to have both parts that I need, with capacity up to 4 buttons

It does not say what RF frequency it uses (though I think it is 433MHz).
It needs to be a frequency allowed by the country where it is to be used.