All of the tools you need to work with the FPGA Arduino — the Vidor — are ... connect the 27th bit of the counter to the LED. If it is low, connect the 21st bit. The rest of the code just ...

So [Todd] has set out to build an Arduino frequency counter for a Kenwood TS-520S HF ham radio. This post (and the video found after the break) doesn’t cover the entire project. It’s rather ...