Can I use the APF03 transmitter with a ht12e encoder IC and the RXB28 receiver with a ht12d decoder IC? If I have a logic high on an encoder data pin, I then need a logic high on the corresponding decoder data pin similarly for a logic low.
Can this be done with this module? How is it done?
Previously somebody asked how do you switch between 315mhz and 433mhz. What is the answer to this?
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Hi Peter,
I’ve taken a closer look at this one, and found that the description provided to us by our supplier suggests the module operates at 433MHz (and the 433M crystal on the board likely confirms this) and 315 is only available as a custom option from them. We’ll either look at rewriting the description after some testing, or retiring the product from our range, as that description isn’t up to our usual standard.
I can’t see why you wouldn’t be able to use ICs to modulate/demodulate the digital signal transmitted by these modules, but I don’t have any experience with these ICs so I’d have to do some digging to get a real idea of whether you’d be able to use them.
First off, can you give us an idea of what your project is aiming to accomplish? We may have alternative parts we can suggest 
Keen to get to the bottom of this one!
-James
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Hi James, Thanks for that. I have a provisional patent for MCU control of an evaporative cooler. The controller finds automatically the coldest setting. At present the temperature setting, manual control of the fan speed if desired, is hardwired from inside the house. I am trying to use remote control so I don’t have to hardwire.
It is starting to look like an impossible task. Particularly the temperature sensor which of course must be inside the house. I use a thermistor and you would somehow have to transfer its readings to the MCU on the roof.
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