Hi John,? my web page at gives more details of the V1 & V2 PCB for tinySA. Based on Eriks original version.
The V1 PCB designed by myself has been built and tested by at least 3 group members so far.?
V2 is slightly different, the Si4342 module select lines are reversed on V1. Very simple to do as my website explains. (can be corrected in software too)
V2 has pullups on the PCF8574 serial to parallel Attenuator module select lines and 3 parts .are added for the CAL output signal.
Both easy to alter as you will see on the web page. In fact the pull-ups may not even be required if the Attenuator module select line 10k pull-downs are removed.
Right now, I am still waiting for the actual attenuator module to arrive from eBay after many weeks, for my own build.? I need to confirm dimensions of the part before finalising V2 Gerber files. Even so, the module can be fitted to the V1 PCB with little effort as others have already done..
There is nowhere you can 'buy' either board other than ordering V1 using Gerbers from the likes of jlcpcb.com or other other PCB makers.
If you wish to have the V1 Gerber files, contact me. It's a pretty simple process.? You will end up with either 5 or 10 PCB's for $5 or less.? (plus shipping)
Glenn <vk3pe>
