LED Flexible Screen

LED Flexible Screens
Model	Unknown
Status	Reverse Engineered
Accessories	Power Supplies, Controllers
Training link	Unknown
Owner	Unknown
Origin	Unknown

Pin out

Pin	Desc
1-4	5v+
5	NC
6-9	Ground
10	Green(Colour 1) Data
11	Clock
12	Latch
13	Row bit 1
14	Row bit 2
15	Row bit 3
16	Output Enable
17	Red(Colour 2) Data

Reverse engineering notes

• There is a row of 595 shift registers, one row for each colour
• The pins your interested are the shift reg pins, and A B C,
• ABC is a binary coded decimal notation for row selection
• You then multiplex over the rows
• The two banks of shift regs share a clock and latch, and have two separate data inputs. So you have to input two streams of data at the same time using the same clock/latch
• Its just one (two) sets of shift registers, with three pins to select which row you want to light
• If you want to do both colours though, you can't use arduino's shiftOut function