📡 TinyWSPR: Open-Source Silicon for Shortwave

We (JKU Linz and JMU Würzburg) built a fully WSPR-capable TX on open-source silicon (TT-Sky25b via @tinytapeout ). A digital subsystem generates symbols; an analog RF chain performs IQ modulation. FPGA tests already reached central Europe with just 10 mW on 40 m. Now we’re waiting for the chip from the fab for the first on-air tests 🤩.

#OpenSource #ChipDesign #CDG #TinyTapeout

Your ltspice wrapped ⚡

- put the kettle on! you spent a combined 325 hours stepping Gmin and sources.
- you tried Alt or Shift clicking trace names to get the waveform summary 148 times. don't worry, you'll remember it's Ctrl one day.
- you pasted a large subckt directly into your schematic and immediately regretted it 52 times.
- your favourite net was 'V(n002)', making up 48% of all waveform traces.

Now introducing: #PDBrick!

1.7 kW worth of raw USB-C PD power.

24x USB-C ports.
4x 100W, 20x 65W.
(4x USB A, but we don't talk about those :P)

I never did a post of the project that @techbeard and I did last-minute before #CCCamp23, so here you go.
Build log in the thread below.

#usbC #usbPD