AD9850 enhanced Arduino sine wave generator with keypad
After experimenting with the rotary encoder, I thought that entry of a frequency via a keypad of number keys would be a good idea.
So I modified the original setup by Andrew Smallbone and added this functionality to the device.
By pressing the blue button of the keypad, you can enter the frequency manually, and output by pressing the blue key again. You can still use the rotary encoder to modify the such set frequency.
