Hi MySensors!

I have some projects in my drawer, let me introduce three of them:

First, it's RF24Remote. It's a driver/library that implements RF24 driver's interface as remote calls from a Linux box to an Arduino device. Connection can currently be via VUsb or via Serial. It's working and tested to some extent, however transfer rate is not best as of now (~4kB/s) and still needs some tuning.

Second, it's Mysensors Linux gateway. It's currenly a bit dirty fork from RPiGateway that utilizes RF24Remote, so it's possible to run it on a generic linux box only with...

... with the third one, and that's the "RF24VUsb Mini stick". It's kind of minimal PCB with VUsb connection via USB-A male, ATMega328p, a LED, ICSP header and nrf24l01 socket. Some pictures:


It's usable for mentioned setup of RF24Remote & MySensors gateway, and also as a MySensors repeater hooked to a USB charger.

I'm currently proceeding with a test run on my MySensors setup with serial gateway on my linux box, so far it seems working fine.
Any opinions/feedback/ideas for improvements welcome.

It is possible to connect the radio, you can find instructions for example here. CE/CSN to any unised digital pin, IRQ not needed. However there are 2 pitfalls:

• voltage: You need to have 3.3v to power the radio. Pro Micro module is sold in 5V version or 3.3V version. 5V version don't have 3.3V pin output, so you have to arrange that by an external regulator. If you have 3.3V version, then it's fine for the radio, but such board is working on 8MHz, so it's not compatible with Leonardo target in Arduino IDE, you need to have hack that there.
• MCU there is different than Arduino Uno/Pro Mini, sleep modes are different; someone here reported that sleep is not working with MySensors, you can search here for experience with that.

I made some helper PCBs for pro micro, you can check here.