Project: HDMI/DVI out for STFM

[Icky]

+1 for HDMI. As PaulJ said most things have HDMI these days.

With a lot of tv’s etc they are just HDMI. If you really need DVI use a converter.

Or you could go all Apple on this and have your own proprietary connector and sell the adaptor cables at a premium. :twisted:

[Smonson]

Or you could go all Apple on this and have your own proprietary connector and sell the adaptor cables at a premium. :twisted:

I suppose that's one option! :D

[Smonson]

I got some of the aforementioned Schmitt trigger buffers, this is what the output clock looks like (with 33R in series).

A0005DS.png

[exxos]

I got some of the aforementioned Schmitt trigger buffers, this is what the output clock looks like (with 33R in series).

Is that on x10 probe ? The scope will load the pins and not give proper reading unless on x10.

[Smonson]

Yep - 10x. Presumably the load is in the ST side of things. Or some effect that I'm not aware of. I will try it with a smaller series resistor when I get a chance.

[exxos]

Yep - 10x. Presumably the load is in the ST side of things. Or some effect that I'm not aware of. I will try it with a smaller series resistor when I get a chance.

It does look like to much resistance there.

[Smonson]

The new, smaller, shifter socket adapter board (fanout buffer version)... Unfortunately there's a slight overlap on the edge of an electrolytic on the ST that I failed to check, but I can always file it down a bit 😊

Other STs might not have that capacitor there anyway.

IMAG0011.jpg

[exxos]

:bravo:

[Icky]

Nice.

Makes it more stable when in the shifter socket too without the overhang.

[Smonson]

I just made the schmitt trigger version of the board and used a 0-ohm resistor for the (outgoing) clock - because I don't have anything less than 33ohms on hand - and I have recreated Exxos' symptoms! It's interesting to me because it looks pretty decent on the scope. I'll get a bunch of intermediate values in for more tests... but It's good to know that my ST isn't cursed with incessant reliability.

DS0000.gif