Implementation of a wireless 2.4 Ghz Radio Frequency connection, info ?

[Nlight]

Hi all,

There is a future keyboard that I aim to design with no rush, I have at least another one to build before this one. I would love to make 2.4Ghz RF connection for it, as I don't like, at all, bluetooth, too much disconnection problems (feel free to enlight me and change my mind).

As I am not skilled in electronics, because I never practice and keep forgetting the few I've learned, I don't know if the following idea is viable, thoughts ? links ?
Edit : Yes, this is definitely the right track
Edit 2 : On the picture, just replace the word keycodes by scancodes



Thanks 

[Nlight]

Ok, I digged a bit, and I have a good start :
We need a transceiver module. The module's chip is a NRF24L01, seems popular.
Here is a pair of cheap modules using that chip :
https://fr.aliexpress.com/item/32820450141.html

and here is a noob tutorial :

additional vids, same thing, but some additional infos :

• https://youtu.be/lhGXAJj8rJw
• https://youtu.be/61kWj6zu4Uw
• https://youtu.be/C9Y6tIu_y3k

different wireless modules explained :
https://youtu.be/vxF1N9asjts

While I used a teensy 2 in my last keyboard, the process was quite straightfoward,  I'm still lacking practice with arduino and alike, this is progress nonetheless.
I intend to use a Teensy 3.2, it has several pins used for SPI, however, I am a bit lost/conused by the availables pins on it :

• cs
• sck
• din : "Data In" I guess
• dout : "Data Out" I guess

while the pins on the transceiver module are :

• TRQ :
• MISO : Master Input Slave Output master being the MCU (arduino like, here a teensy), and slave the RF module. Connects to the SPI Din pin
• MOSI : Master Output Slave Input, so connects to the SPI Dout pin on the teensy 3.x
• SCK : well that one's easy
• CSN : guess it goes onto the CS pin
• CE :
• VCC : easy enough
• GND : yeah, obvious too

If any of you could point me the right direction that would be great, thanks

[tags] : transceiver module radio frequency 2.4ghz wireless RF arduino teensy

[rrrsss]

some projects are already built on this idea

NRF24 chip based is here from tmk: https://github.com/ahtn/tmk_keyboard/tree/wireless
while a totally new firmware is here: https://github.com/ahtn/keyplus

There's also Mitosis/Chimera that's based on nRF52 chips, based on tmk/qmk too.

Most of these are split keyboards but can be utilized to create a single board with dongle receivers

[Nlight]

Awesome ! Thanks, that's exactly the kind of input I need