Antenna switching using IO lines under Web GIU Kiwi SDR

FrankinAu · August 10

Can it be possible to suppose say 4 of the IO lines to switch 3 antennas and termination from the RF and antenna select as standard config, im not too versed on the guts of code and linux to do a DIY can it be part of a Kiwi SDR GIU skin, use the IO lines on P9 connector

jks · August 10

I hope you meant to say the P8 connector instead of P9. Don't use GPIO pins on P9. Some are already being used by the planned Kiwi upgrades.

I would discourage doing this in general. P8 pins not only go to the Beagle GPIO but also to the FPGA. If you make an error you will destroy the FPGA -- a very expensive mistake. Much easier and better to spend the money on an external antenna switch that is already supported by an existing antenna switch backend driver.

FrankinAu · August 14

Thanks for the reply can you pleae give me example say using Arduino, USB, and relay drivers im guessing a Arduino nano has enough IO lines any examples of a circiit and sketch I assume the Beaglebone board will support USB com port