STELLEX YIG PLL - STANDALONE LCD CONTROLLER |
Standalone controller for Stellex YIG PLL, design requirements:
- I2C LCD 2x16, Arduino compatible controller
- Frequency range: 5.2...6.5GHz (or other range by software modification)
- Step 1 / 5 / 10MHz. Minimum step is limited by 250KHz phase detector and frontend prescaler.
- EEPROM storage of last frequency
- Lock / Unlock PLL indication
- YIG power supply CW manipulation (800msec on/off) as microwave beacon
- 10MHz or 13MHz OCXO reference included (selectable inside Arduino sketch)
Note: Digital input "AUX" is used to toggle CW mode. UP, DN, STEP, AUX digitals inputs are pulled-up by uC internal resistors.
Update 04.2024: 10GHz version successfully tested by Tomasz SQ5EBO
Schematic ver.1
PCB ver.3 (Gerber)
Arduino Sketch v7
Library LiquidCrystal_I2C (v1.1.2)
Atmega328P firmware 5200-6500MHz / 9500-10500MHz, reference 10MHz / 13MHz
MCU default fusebits, 8MHz interna clock
Stellex PCB internal modification for external OCXO reference
Stellex Controller view
