A Drake R4A VFO based on my FT301 VFO. Special version for Bill NZ0T
Arduino based external VFO for Drake R4A with AD9850 with LCD
The Drake R4A uses a VFO in the range from 4995Khz to 5495Khz allowing to tune a 500Khz piece of a selected band.
Contains the code for a Arduino based external VFO for the Drake R4A with AD9850 DDS to generate the frequency and a LCD display as user interface. Allowing the user to switch band and step size and show the current (band) frequency. The bandplan is defined in a struct in the main source file (default US country full licensed bandplan).
- Arduino Uno R3
- DDS one of :
- QRP-Labs Arduino Shields (http://qrp-labs.com/uarduino.html) when using AD9850 module from QRP-Labs
- Display option one (or both) :
- LCD keypad shield (http://www.hobbytronics.co.uk/arduino-lcd-keypad-shield) (warning : don't use D10 with this shield) with analog button.
- Simpel rotary encoder (gray code encoder) connected to 2 and A2 (2 for interrupt)
- A balance potentiometer connected to A3 for a +- 1Khz RIT.