Today, Dileep VU2DLE visited my shack and we had a good time playing with Arduino Nano.

Today was also the first time, I downloaded, built and flashed the ubitxv4 firmware into the Arduino Nano board via the Arduino IDE UI on a Macos setup and it worked like a charm. The steps involved downloading the usb-to-serial driver, downloading the Arduino IDE, cloning the ubitx4 repository, building the "sketch" files and "uploading" them (the only catch was that I had to select the Nano board with the "old bootloader" from the menu).