Post #1762136
2026-04-25 14:47 UTC
I stand corrected, the chip is fast enough. It’s the resistors that are not handling the high frequency and mess up the signal. #RetroApple
Replies (2)
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@arroz@mastodon.social 2026-04-25 15:58
We’re entering crazy territory but yeah I’m borrowing the level shifters from the Guzman’s logic analyzers. Time to test with the real thing! If I was careful I could actually connect directly since the Pico GPIO is 5V tolerant. But only when the Pico itself is powered! So… let’s do it with the level shifters just in case. #RetroApple
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@axel@hsnl.social 2026-04-25 15:34
@arroz I was just looking up HCT, and that is rated at 40MHz: should be plenty. Are the divider resistors to small?