Alternative to RF Digital keybob and xceiver?

T Chap

I was using a single button remote with a receiver module that was a very simple way to trigger an input on a Prop with good range ie up to 30'. RFdigital was sold and I can't easily find the parts at a quick search. Does anyone have a go-to 1/2/3 button FOB and receiver option that is plug and play with minimal effort ie no PCB fabrication? I was previously powering the RF board with 5V off the main Prop board, and the device output 3v3 to the Prop inputs. So this would be nice to replicate.

Phil Pilgrim (PhiPi)

DigiKey appears to have multiple possible solutions:

https://www.digikey.com/products/en/rf-if-and-rfid/rf-receiver-transmitter-and-transceiver-finished-units/873?k=keyfob

-Phil

T Chap

https://www.parallax.com/product/700-10016

This looks like it will work well.

DigitalBob

Adafruit has a 4 button 315 MHz fob $6.95. Rx module $4.95. You can get a 4 button fob and Rx module with 4 relays on Ebay $7.35 for the pair China.

Buck Rogers

And Adafruit sells multiple button versions.

The key here is to find the right combination of both that works.


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Don M

On a similar note I was wondering if there exists a remote that sends a unique number. I have a project in mind that would have 1 receiver with multiple 1 or 2 button remotes that are each unique so they can be identified.

localroger

Don M I had that exact problem a few years ago and came up with nothing except the X-10 home automation system, for which there is an RF receiver available (somewhat pricey) which will receive all the home codes and output them to a serial port. This didn't work too well in practice because the batteries kept dying and the fobs would lose their programming when that happened. I finally ended up rolling my own with ESP8266 modules. (Fortunately these were vehicle mounted so the remotes could be powered by the vehicle electrical system.)

T Chap

Maybe overkill but if you look into the Nordic nRF24L01 chip you can send anything you want to a single receiver. Numbers, data. You have to have a micro connected to it on Each end. I used the Prop to send data on one end and a prop to read it on the other end. very cool method of wireless data.

Don M

What I am looking to do is operate a garage door opener with multiple remotes. Each remote would send a unique identifier (number) and that number would be compared to a list. Each person would be assigned a specific remote. So I can see who opened and closed the door.

T Chap

I don’t know a remote/receiver that would allow that. But if you want to build your own remote and receiver using a Prop + Nordic RF chip on each end then that would be simple.