Unfortunately I can't open my ebay shop right now. While I'm trying to open it, you can buy this board here: https://www.ebid.net/eu/for-sale/arduino-ide-compatible-controller-with-the-nordic-nrf24l01-radio-transceiver-156695123.htm

The StableNode is a low cost wireless Arduino IDE compatible (the Atmel ATMega328P 8MHz) microcontroller with The Nordic nRF24L01+ 2.4 GHz Radio transceiver on board.

Best sutable for Home Automation, IOT. Could be used as core board for radio controlling any DIY project. Accurate designed RF subsystem based on NRF24L01+ chip with optimal tunned pcb antenna

Specification:

• Dimensions 59mm x 18mm
• The Nordic nRF24L01+ 2.4 GHz Radio transceiver on board
• Supply voltage up to 6.5 Volts
• The Digital and Analog pins are 5 volts
• 4 battery connector pins
• FTDI header for programming

Pin out:

Arduino IDE Settings

How to use it as home automation (IOT) node controller

StableNode.ino is the Arduino example sketch using MySensors API.

• Controller Setup.
  Burn the StableNode.ino sketch into the board and it will became one of the MySensors home automation network Sensor's Node. To create the home automation network you need smarthome controller and at least two Nodes one as a Sensor, a Relay or an Actuator Node and the other one as the “Gateway Serial” connected to a smarthome controller. I personally love Domoticz as a smarthome controller. Please check this HowTo to install Domoticz.

• No Controller setup. However, for no-controller setup, as example, you can use 3 nodes - first node as the “Gateway Serial”, second node as a Relay and last one as a Switch for that Relay. No controller needed then, keep the Switch and the Relay on the same address and the switch will operate the relay.

Things worth mentioning about the MySensors Arduino sketch:

Connect the Node to FTDI USB adaptor, Select Pro Mini 8MHz board in Arduino IDE and upload the StableNode.ino sketch.

Done

The board is created by Koresh

Schematic:

The board schematics Pdf link

P.S. Always mind! if your Arduino code fails you need some backup plan. Put some candles and matches in your bathroom )))))... hope you understand. Start your automation wisely. Like auotomate your doghouse first. Then checkenshed and so on!!!