James @baldengineer@qoto.org

Does anyone know if it is normal for a C64 to produce sharp notes? This should be A4 @ 440 Hz, but it is high. (All the notes are sharp.)

This is generated with an ArmSID and Qwertuoso.

Here are some of the things I picked up last weekend at Hamvention ... These will become parts of future projects. (Really! ... probably.)

https://bald.ee/hamvention2023

Also, this little guy was on a table near the entrance.

A few pictures from CoCo Fest 2023 in Carol Stream, IL. (Very close to Chicago)

Check out this Pi Pico development board an e14 community made (and then sent me!)

It has some nice features. The board files are available to get your own.

https://www.youtube.com/watch?v=-Kv5MwaRqbk

Anyone check out these new standalone "Active EMI Filters" from TI yet? I find their description... intriguing.

https://www.ti.com/power-management/power-supply-filter/products.html

and

PR: https://news.ti.com/ti-pioneers-industrys-first-stand-alone-active-emi-filter-ics-supporting-high-density-power-supply-designs

Replaced spinning rust platters with @BlueSCSI.

And now I can get to important work.

(This is not the Macintosh with the bombed logic board.)

#MARCHintosh

Remove. Your. Batteries.

Not what I expected to see when I opened up an Apple IIgs with a note saying: "Failed CPU test."

Is this what you take when you get a headache while debugging an issue with an oscilloscope?

My first attempt at building a right-angle Banana-to-USB adapter. Also, first time I've tried to solder two PCBs together. (That I designed.)

Needs some tweaks though.

Check out lcamtuf's latest 8-bit handheld game: Sir Box-a-lot.

It's Sokoban running on an AVR128DA with an RGB OLED screen.

https://lcamtuf.substack.com/p/mcu-land-part-7-life-in-full-color

He's also done some other "handheld" games in the past.

Incredible work.

Sometimes your code gets kinda hangy... this is going to be my new while(1);

From the Apple IIc firmware listing:

Friday 2/24 Stream: More work on the Apple IIc Schematic in KiCad! Now on Twitch and YouTube (again). https://baldengineer.com/live

Sega's Gear Gear (VA1) is now available in the Bit Preserve Repo.

And it's a KiCad 7 schematic!

https://github.com/baldengineer/bit-preserve/tree/master/Sega/Game%20Gear

So. Um. Can anyone explain this combo?

Colors for nets in KiCad 7 makes some of this mess much clearer!

Hey vintage and retro electronics fans, I think I finally understand all of the DexoIT variations!

https://www.youtube.com/watch?v=Hd6M3fO6Upg

.... and done.

No ERC reports mean the schematic is 100% perfect right?

Oh good. After annotating 8 of the 9 parts missing annotation, the error count went UP by 43. (I can't find the 9th one.)

I'm going to need much more tea.