AndyCap Ok that Nextion HMI screen is a pile of crap, I guess thats why they are cheap!
pity... this idea is very interesting.
after you posted, I went online to look to see what UART OLEDs were available at mouser.
they are stocking the Lumex ezDisplay UART , 128x64 single colour … relatively expensive for these things (35 GBP)
looks simple to program... both AT and its own 'HEX' mode.
display is 5.5cm wide, but board is 7.5cm, so that's something like 15HP?
never seen it though, so hard to know if its any good.
do you think you could use the rest of the panel space for something useful?
Its definitely an interesting idea,
even if it was just to get feedback about what patch your running, what cvs are assigned to...
(but lots of other things too, like values or a scope 🙂 )
what voltage is the UART? I assume 3.3v?
this board, seems to be 5v supply, 3.3v I/O , so that seems perfect for this … I guess you take the 5v directly from the eurorack supply - as hard id assume its a pain to access off the salt/bbg