simple controlling AD 9851 by using variable resistor
Hi in this video I have show you how to controlling the DDS frequency by the "poor way" ,I have only one volume (variable resistor) and I was too lazy to go out to buy a keypad or rotary encoder for the precision control. So I made the easy one , starting at 12Bit Arduino Due's ADC giving your 4096 different value then I sum it with 20Mhz baseband the result is output frequency can vary form 20.0000Mhz to 20.004092 Mhz . Displaying in the famous 1.8" TFT. Shortwave radio with SSB function is used to show the changing frequency.
Hi in this video I have show you how to controlling the DDS frequency by the "poor way" ,I have only one volume (variable resistor) and I was too lazy to go out to buy a keypad or rotary encoder for the precision control. So I made the easy one , starting at 12Bit Arduino Due's ADC giving your 4096 different value then I sum it with 20Mhz baseband the result is output frequency can vary form 20.0000Mhz to 20.004092 Mhz . Displaying in the famous 1.8" TFT. Shortwave radio with SSB function is used to show the changing frequency.