Notices by Trammell Hudson (qrs)

Dead bug style

Why, yes, I did spend the evening probing the world's fastest parallel hypercube supercomputer (of 1987) to reverse engineer the schematic and backplane pin out.

Simplify your PCB layouts with this one easy trick!

It's amazing that an entire CPU fits into such a small component. The die is probably even smaller and the size is entirely due to the human-solderable SOT-23 package leads.

3D printed watch case and band

@ehashman The pink LEDs look amazing when the all-hands-alignment animation plays.

Pink and Orange (using some 0805 pink LEDs from my stash for the hours)

The 0603 life.

Urban leaf peeping.

Tonight's soldering project is v0.2 of the Charliewatch. It's slightly smaller (exactly 1 squrae inch), so I plan to cut a stencil for the very closely packed 72 LEDs.

The awkward ergonomics of updating my own firmware.

Revised Charliewatch design adds a much needed button, drops the currently unused RF parts and shrinks the board to be exactly 645mm^2 (1 square inch). Should fit in a 38mm wrist watch case.

testing a 40mm case for the Charlie watch. seems to fit fairly well, although the exposed LED pins short in a very bright way sometimes.

Charliewatch: an "analog" version of Travis' Goodwatch, designed for a 40mm wristwatch case. https://github.com/osresearch/charliewatch

Datasheet state transition diagram vs alchemic transmutation circle.

Yes, of course it runs Doom.

Weekend hack: Creating a retrofuture internet terminal by replacing the Motorola MDT-9100's i386SX with a BeagleBone Black and Teensy: https://trmm.net/MDT9100

@pho4cexa I'm surprised they don't have the relevant xkcd on their home page. https://mastodon.social/media/-w-5m3LvnVa7kO3bp3g