Arduino Sketch for transmitting WSPR messages with a Si5351
- Adafruit Feather M0 https://learn.adafruit.com/adafruit-feather-m0-basic-proto
- Adafruit Si5351 Clock Generator Breakout https://learn.adafruit.com/adafruit-si5351-clock-generator-breakout
- Low Pass Filter for clock outputs
- GPS receiver
- HMIFeatherWing https://github.com/generationmake/HMIFeatherWing
- battery for Feather or USB power bank
- ArduinoNmeaParser https://github.com/107-systems/107-Arduino-NMEA-Parser
- DogGraphicDisplay https://github.com/generationmake/DogGraphicDisplay
- TimeLib https://github.com/PaulStoffregen/Time
- si5351 https://github.com/etherkit/Si5351Arduino
- JTEncode https://github.com/etherkit/JTEncode
- SAMDTimerInterrupt https://github.com/khoih-prog/SAMD_TimerInterrupt
| Pin | Pin Name | Signal | Description |
|---|---|---|---|
| 1 | RESET | RESET | |
| 2 | 3V3 | 3V3-rail | supply voltage for GPS and clock generator |
| 3 | AREF | not connected | |
| 4 | GND | GND | |
| 5 | A0 | KEYPAD_A0 | Joystick |
| 6 | A1 | DIS_CS | display chip select |
| 7 | A2 | DIS_RESET | display reset |
| 8 | A3 | DIS_A0 | display A0 |
| 9 | A4 | ||
| 10 | A5 | ||
| 11 | 15/SCK | SCK | SPI for display |
| 12 | 16/MOSI | MOSI | SPI for display |
| 13 | 14/MISO | MISO | SPI for display |
| 14 | 0/RX | RX | serial for GPS |
| 15 | 1/TX | TX | serial for GPS |
| 16 | D7 | ||
| 17 | D11/SDA | SDA | I2C for clock generator |
| 18 | D12/SCL | SCL | I2C for clock generator |
| 19 | 5 | ||
| 20 | 6 | ||
| 21 | 9 | ||
| 22 | 10 | ||
| 23 | 11 | ||
| 24 | 12 | ||
| 25 | 13 | DIS_BL | Display Backlight |
| 26 | VBUS | ||
| 27 | EN | ||
| 28 | BAT |