Did anyone use a RF remote control module, I am hoping to find a lower cost alternative to something like this:

https://www.digikey.co.nz/product-detail/en/linx-technologies-inc/HUM-2.4-RC/HUM-2.4-RC-ND/4767849

 

hi bug,
Your link does not work.?
E

 

Hello,

This should work:
https://www.digikey.co.nz/product-detail/en/linx-technologies-inc/HUM-2.4-RC/HUM-2.4-RC-ND/4767849

Bertus

 

hi bug,
Check out this Article by @RK37
https://forum.allaboutcircuits.com/threads/choosing-the-right-rf-transceiver-ic.150944/

E

 

hi bug,
Check out this Article by @RK37
https://forum.allaboutcircuits.com/threads/choosing-the-right-rf-transceiver-ic.150944/

E

I got this:
You do not have permission to view this page or perform this action.

 

Hello,

You should now have permission.

Bertus

 

I did a quick scan of DigiKey and it appears most transceiver units are ca. $30 or more. Some Linx models, e.g., TRM-418 are cheaper at about $17 ea. I have used an XBee pair (old cost ~$25 each) and older Linx units (e.g., TXM-433-LC, RXM-433-LC) that were considerably cheaper but are now obsolete. Moreover, as the names imply, they were not transceivers.

One thing I noticed about the device you mention is that it appears to use a parallel, 8-bit data port. Admittedly, I did not read the datasheet carefully to determine whether serial data is also allowed or each pin can be used for serial too. The XBee in contrast is a "1-wire" connection. That is, if you have serial USART set up through a hardwired connection, all you need to do is insert the XBee pair to go wireless.

Which gets to whether you can define your needs in a little more detail. One factor is whether you want to deal with the encoding and decoding (e.g., Manchester or similar type). The XBee (and probably the device you mention) do that for you. XBee's scheme is proprietary. Must you use 2.4 GHz? Do you need each unit to be a transceiver?

John

 

I did a quick scan of DigiKey and it appears most transceiver units are ca. $30 or more. Some Linx models, e.g., TRM-418 are cheaper at about $17 ea. I have used an XBee pair (old cost ~$25 each) and older Linx units (e.g., TXM-433-LC, RXM-433-LC) that were considerably cheaper but are now obsolete. Moreover, as the names imply, they were not transceivers.

One thing I noticed about the device you mention is that it appears to use a parallel, 8-bit data port. Admittedly, I did not read the datasheet carefully to determine whether serial data is also allowed or each pin can be used for serial too. The XBee in contrast is a "1-wire" connection. That is, if you have serial USART set up through a hardwired connection, all you need to do is insert the XBee pair to go wireless.

Which gets to whether you can define your needs in a little more detail. One factor is whether you want to deal with the encoding and decoding (e.g., Manchester or similar type). The XBee (and probably the device you mention) do that for you. XBee's scheme is proprietary. Must you use 2.4 GHz? Do you need each unit to be a transceiver?

John

• I don’t need a transceiver. The one I linked in is more like a remote control. When paired together, the IOs on the output device will follow the IOs on input device, that’s all I need.
• 2.4G is prefer, as this need to be as tiny as possible.
• I don’t need each unit to be a transceiver
• The ideal is I only need to add a button, match the antenna and be done with it, no MUC needed. As this is an one off thing, don’t bother to write software for it.

 

Hello,

You should now have permission.

Bertus

Thanks, that’s an educational read.