PAL0123

Project: PAL0123
Featured:
State	Active
Members	xopr
GitHub	No GitHub project defined. Add your project here.
Description	192x16 bicolor matrix display
Picture
No project picture! Fill in form Picture or Upload a jpeg here

192x16 bicolor matrix display

synopsis

xopr received two 192x16 bicolor 5mm dot matrix displays (one to keep, one to fix a controller board for).

pinout and protocol

The marquee consists of shift registers which allows one to shift and latch in 2x192 bits. After that's done, a row needs to be selected and the two colors are displayed with a strobe signal. This means, the display has no memory and for every line, a new set of pixels need to be shifted in. The display is controlled with 9 bits (red, green, clock, strobe, latch enable, a, b, c, row)

Pinout:

pin 1
    .--.
GND |oo|
GND |oo|
GND |oo|
GND |oo|
GND |oo|
GND |oo|
GND |oo|
GND |oo|
GND |oo|
NC  |oo| NC(?)
    '--'

plan

Already reverse engineered the pinout and protocol and drove it with an arduino nano. Unfortunately, with the default settings, it is slow enough that the display's refresh rate becomes annoying. Did some tests with an ESP-12E module and had some success (the 'ROW/chip select' pin selecting the other 8 rows somehow failed on GPIO15 and GPIO16).

first PoC (5V logic driven with ESP

todo

• upload data sheets
• note pinout