On Jan 6, 2020, at 19:50, Jim Sheldon <w0eb@...> wrote:

?TSW (the Triumvirate Skonk Worx of W0EB, W2CTX and N5IB) are pleased to announce the immediate availability of an inexpensive plug-in adapter that will allow a PJRC.com Teensy 4.0 with a 600 MHz processor and lots of flash program memory to directly replace the NANO in a V6 uBITX Raduino!

We also have available (open source) software for same Teensy 4.0 that runs and looks almost exactly like the original factory V6 software except it's many times faster and with lots of program space, has a few extra niceties built in.?

The adapter kit is available now, and details on how to purchase one can be found on the TSW website - .? The software is also available in the "uBITX files directory via the link near the top of the page on the TSW website.

I have one running extremely well on an actual Version 6 uBITX (basic kit) that I received a day before Christmas.?

I built it up using a 3D printed front panel & base I designed using the factory supplied acrylic front panel template for dimensions.

One nice thing about using the Teensy 4 instead of the NANO aside from the display speed is that it eliminates many of the birdies associated with the various oscillators on the NANO board and I can detect NO tuning clicks when the encoder is turned.?

The only drawback is with the 3.3V max input levels for the Teensy 4.0, the Factory's keyer code had to be abandoned, R2 had to be removed and the trace that goes from input pin A6 to the NANO and the "KEYER" pin on the 18 pin right angle connector must be cut to use the adapter with a V6 Raduino.? If this isn't done, +5V gets applied to the A6 input pin on the Teensy and will destroy the ADC in the Teensy.? We tried applying 3.3V to the Vcc side of R2 but the voltage divider outputs weren't read reliably by the Teensy's ADC and the keyer didn't work well at all.? We re-wrote the keyer to use the A6 and A7(spare) inputs with A6 being the DOT input and A7 being the DASH input.? This also requires a separate jack for the paddles but makes the keyer really sing if the mods are done.

TSW also plans our own Raduino Clone for the V6 that will have pluggable jumpers to cover removing the voltages and will operate exactly as a Factory Raduino using a NANO or by setting the jumpers work with the Teensy 4/adapter in place of the nano without cutting any traces or removing R2.? This will be available as soon as the PC boards get here and are tested, possibly next week sometime.? It's dimensions will be such that with the 2.8" ILI9341 TFT display mounted, it will directly replace a Factory Raduino.? It will be offered only as a kit but the kit price will be reasonable.? With the kit, the display and Teensy will not be supplied as they are readily available via PJRC and other suppliers.

Jim, W0EB
TSW Project Coordinator

We also plan on another Raduino Clone that will