20 Jan
2023
20 Jan
'23
6:14 a.m.
On 1/19/23 21:55, Bill Degnan via cctalk wrote:
My catweasel 4, which I assume is more or less the
same thing works fine in
a p3 pentium system. Is the hreaseweazle totally different?
Not really. I do the same as the Catweasel, but with a STM32F407 board
running at 168MHz. The capture clock can go as high as 84MHz, so better
than the Catweasel. I image to SD and also do histograms on the fly as
I'm reading.
It's what I've been saying for years--a cheap MCU can both emulate a
floppy (the Gotek uses a lowly STM32F107) as well as obtain accurate
transition samples.
I've also got a STM32F767 board that one day, I hope to hook to the
analog output of the read amplifiers. The ADC on that thing can run at
a 45MHz sample clock. When I get round tuit... My board has about 8 MB
of PSRAM; more than enough for a track's worth of analog samples.
--Chuck