I’m playing with a bare LCD screen, and am thinking about making a “plank” which connects to the BP5/6 and offers a connection to any LCD screen which is compatible with a 32 segment x 4 common arrangement. I found a Rohm chip that would be perfect for this, but it’s not as easily obtainable as I’d like (ordering from Digikey ./ Mouser here can get a bit pricey with shipment). The chip in question is the BU9797.
Is there a similar but more popular chip floating around in the maker community that would be a better fit?
Alternatively, is there any clever circuit hacks that would let me make such a driver from an RP2040/2035 with a handful of common ICs? I could probably design such a thing, but it’s not worth the effort compared to just ordering the Rohm (or another) purpose-built IC. But if someone has already solved this, I’d be keen to try a more discrete solution.
I plan to make my plank kind of custom to my particular LCD (which has a 32-pin zebra strip interconnect). But I’m going to also put just header pins on the board, so someone could bodge up their own LCD and use the same plank if desired. That is, unless there’s already such a plank in the queue.
