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Hi Ken.

The microcontroller?is not difficult to solder.? I drag-solder across the pins with my soldering iron, then go back and remove the inevitable solder bridges.? There is plenty of space around the component.

For me, the USB connector is the hardest component to solder.?

There is a short writeup on my website about surface-mount soldering.? It isn't a tutorial, just a few notes on what I do.

??

- Bruce

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On Sat, Jul 11, 2020 at 9:02 AM Ken KM4NFQ <km4nfq@...> wrote:

Hello Bruce W8BH,

Thank you for all the work you have put into this project, and thank you for sharing it with us. Your documentation is the Best. I am hoping that I will be able to put one of these together in the near future. I have some limited experience soldering SMTs, but I have never soldered a .5mm pin microprocessor. However, I do? have some solder paste, a hot air gun, and a repurposed toaster oven (now a reflow oven).

Regards,
Ken, KM4NFQ "Not Fully Qualified"
/g/w8bhMorseTutor

On Fri, Jul 10, 2020 at 7:46 PM Bruce Hall <bhall66@...> wrote:

Initial-draft documentation is now complete:

Part 1:?

Part 2:?

Part 3:?

Part 4:?

Part 5:?

Part 6:?

Schematic:?

Gerbers:?

Source Code:???

Please note that this is "version 0.1" hardware: it works, but probably not issue-free.? I will post any issues as I find them.

- Bruce