LED part for Woodstock machines

[ElectroDuende]

(11-26-2015 11:07 AM)PANAMATIK Wrote:  Thanks for the "trusty supplier". Indeed my woodstock replacement LED modules are still available and ready for "plug and play".

The digits have a slightly different appearance than the originals, because they are about 15% smaller in size (45 mm instead of 54mm). And due to the higher components they are finally located nearer to the red display cover. But they are a real replacement, and the only one that I know of, in case that you have to fix a defective woodstock display.

Unfortunately I cannot sell them for 16$, because my cost were about 22$ each, 12 alone for buying the LED modules. But shipping without insurance could be reduced to 2$.

I tried to build also a replacement for spice series calculators, but didn't make it yet, you need to build your own adapter. For pinout description see attachement.

Bernhard

I took a bried look to this after our conversation (consdering that it took me several months to restore a couple of calculators, and that my arduinos are in "deep storage" since a long time ago, it was all I could do) Where do you guys buy free time for all this things???

The two problems I see here are:

- The one you noted about spice using independent lines both for annode and cathode of sign indicator, and led moludles having them "shared".
- The fact that spice has both decimal radix and comma. I suppose the way to solve this is connecting the "dot" of led modules to the "comma" and setting the machine to use comma as a decimal radix (done cutting a jumper in the power board) As the comma only ligths when separating decimals, and the dot ligths both on decimals and thousands.

I'll patiently wait for skilled guys like you to solve the problem, and then buy a replacement from you. ;-)

By the way, I removed the clear plastic magnifier over my spice LED module... WOW! Looking at those tiny led modules connected by almost imposible to see gold wires is amazing!
There is some green corrosion on the tracks but I face a dilemma... if I try to clean it, I can break the wires (only half digit is currently failing). If I don't clean, it may end ruining more segments...