TheGalantOne
- Apr 16, 2024
- 3
- Joined
- Apr 16, 2024
- Messages
- 3
Hello Everyone,
My friend owns a store and his big LED sign went bad. Probably the main board. Well we took it apart and found the display was assembled in separate panels. I have a couple of these panels and was getting ready to strip them down for parts. Then I realized to use the LED Matrixes with an Arduino I was just going to have to recreate a board very similar to the one they were already on. So now I am trying to figure out how to use the panel as is.
I can only see the traces on one side of the board since the other side is covered in LED Matrixes. If that wasn't bad enough it is a multilayered board so I really only get a small view of the circuit. The board seems split in two halves each with a 14 pin input and 14 pin output, wich allows you to chain them together. I would love to figure out what these 14 pins do. I was hoping some one could look at the material list below and give me an idea. For example the CMOS Octal Bus Buffer. Are they using a standard bus architecture I can read more about?
Hope someone can help.
(2) 14 pin inputs, (2) 14 Pin outputs, Black 12AWG Ground wire, Red 12AWG , Orange 12AWG VDD Power
My friend owns a store and his big LED sign went bad. Probably the main board. Well we took it apart and found the display was assembled in separate panels. I have a couple of these panels and was getting ready to strip them down for parts. Then I realized to use the LED Matrixes with an Arduino I was just going to have to recreate a board very similar to the one they were already on. So now I am trying to figure out how to use the panel as is.
I can only see the traces on one side of the board since the other side is covered in LED Matrixes. If that wasn't bad enough it is a multilayered board so I really only get a small view of the circuit. The board seems split in two halves each with a 14 pin input and 14 pin output, wich allows you to chain them together. I would love to figure out what these 14 pins do. I was hoping some one could look at the material list below and give me an idea. For example the CMOS Octal Bus Buffer. Are they using a standard bus architecture I can read more about?
Hope someone can help.
(2) 14 pin inputs, (2) 14 Pin outputs, Black 12AWG Ground wire, Red 12AWG , Orange 12AWG VDD Power
Qty | Parts On Board (Chip number then Data Sheets found) |
20 | 8x8 Bi-color Led matrix |
20 | A6277x 8-Bit Serial Input Constant Current Latched LED Driver. |
2 | 74HC240D CMOS Octal Bus Buffer |
2 | 42Z4XRJ-HC14 possibly an SNx4HC14 Hex Inverter |
16 | IR44SH-4L2N-F7304 possibly an IRF7304 HEXFET |
2 | MAX7000 EPM7032 |
4 | 14 pin connectors |
? | Lots of little resistors on the LED driver chips |