- September 10th, 2024, 3:17 pm#4999998Looking at other people's photos of the kit, your photo looks correct (and matches the documentation). Their kits worked, yours doesn't.
The 28 segment bargraph is available in two variants, the pin layout is identical but one is Common Anode and one is Common Cathode. It has either 7 + 4 pins or 4 + 7 pins depending which variant (11 pins total). But the bargraph board has 16 pins, it's a 16 wire bargraph.
So I'm wondering if perhaps Spongeface designed the board to work with both variants of the bargraph, and the latest run uses a different variant to the documentation and requires the ribbon cable to be flipped (like you've both done).
I've bought many of these bargraph LEDs in the past and sometimes one variant is sold out, so it makes sense to be able to support both types rather than waiting months/years to manufacture more. What impresses me is the design of the PCB, being able to support both variants is seriously clever design on Spongeface's part.
Glad you both got it working! Maybe the documentation needs an update so people can tell which way the ribbon cable should go depending on which variant they were shipped.
- By THawke
- By mrmichaelt