Principles
- Build a MySensors repeater with the material in stock, to test if it would solve the problems with the sensors in the back of the house.
- Added a Si7021 module to measure temperature and humidity.
Prototype
Used Components
Wiring
MISO = M1, MOSI = M0
| Component | Pin | Wire/Component | Pin | Component |
|---|---|---|---|---|
| NRF24L01+ Adapter | +3.3V | red | 5V | Breadboard |
| NRF24L01+ Adapter | GND | brown | GND | Breadboard |
| NRF24L01+ Adapter | CE | blue | 9 | ArduinoProMini5V |
| NRF24L01+ Adapter | CSN | purple | 10 | ArduinoProMini5V |
| NRF24L01+ Adapter | SCK | yellow | 13 | ArduinoProMini5V |
| NRF24L01+ Adapter | M0 (MOSI) | gray | 11 | ArduinoProMini5V |
| NRF24L01+ Adapter | M1 (MISO) | white | 12 | ArduinoProMini5V |
| NRF24L01+ Adapter | IRQ | green | 2 | ArduinoProMini5V |
| ArduinoProMini5V | VCC | red | 5V | Breadboard |
| ArduinoProMini5V | GND | black | GND | Breadboard |
| Si7021Module | VCC | red | VCC | ArduinoProMini5V |
| Si7021Module | GND | black | GND | ArduinoProMini5V |
| Si7021Module | SCL | Purple | A5 | ArduinoProMini5V |
| Si7021Module | SDA | Green | A4 | ArduinoProMini5V |
Programming
- Use Platformio, see platformio.ini file.
- Board: Arduino Pro or Pro Mini
- Processor: ATmega328P (5V, 16MHz)
- Serial monitor: 19200 Baud
Code at: RepeaterProMini.ino
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