This code generates a .wav file which emulates a fully-populated FT8 band! This .wav file can then be played with rpitx on actual air (well on a dummy load) for receiver testing purposes. rm mixed.wav; sox -m *.wav mixed.wav sox mixed.wav -r 48000 sampleaudio.wav Now play sampleaudio.wav using https://github.com/F5OEO/rpitx. I have tested https://github.com/F5OEO/rpitx on Raspberry Pi Zero 2W TX'ing @ 14.074 MHz. References: ...
While running https://github.com/fhoedemakers/pico-infonesPlus, I found that my SNES gaming pad was not fully supported. Specifically the UP DOWN and LEFT RIGHT keys were not working. Let's debug this a bit: Plug in the gaming pad on a Linux box and run the following command (hidraw5 will need to be changed as needed): $ lsusb ... Bus 001 Device 063: ID 0810:e501 Personal Communication Systems, Inc. SNES Gamepad $ sudo hexdump -C /dev/hidraw5 ... 00004a50 01 80 80 7f 7f 0f 00 00 01 80 80 7f 00 0f 00 00 |................| 00004a60 01 80 80 7f 00 0f 00 00 01 80 80 7f 00 0f 00 00 |................| * 00004a80 01 80 80 7f 7f 0f 00 00 01 80 80 7f 7f 0f 00 00 |................| This is what I see when pressing the UP key. ...