ELLO 2M

by Yellow Beak Computer Ltd

A DIY Computer for Hobby and Education

View all updates Nov 14, 2016

No Luck This Time

Well, it’s time for the first bad report… :-(

Received the production samples. Excellent build. In fact so good that it has created an unforeseen problem.

In the earlier prototypes I used to work with a different PCB factory which had more limited production capacity and less precise equipment. The result of that - working prototypes. This time the new factory has equipment which is apparently much better and has managed to run soldermask between the teeth of the keyboard comb pads. Result - keyboard not working unless some other techniques are used, such as additional rubber pads, etc. The reason for that is because the soldermask is taller than the exposed copper in the pads and the panel contacts can’t create the needed short in the comb. Grrr… :-(

I have fixed the PCB file now to force soldermask expansion (should have done that long time ago!), but now the big question in front of me - what to do with all those first batch manufactured systems with damn non-operation keyboard combs? Trying to think of a quick solution to patch them so people can receive them sooner. So far my ideas are circling around additional self-adhesive conductive rubber pads (tried them with success), or some sort of thin elastic conductive sheet to stick under the keyboard panel (no idea if such thing exists at all).

It is very frustrating problem that needs a quick and clever solution…


$23,160 raised

of $14,000 goal

165% Funded! Order Below

Credits

Yellow Beak Computer Ltd

What ELLO is about, is creativity and challenge by emulating a modest system similar to those which created the current generation of engineers and programmers, to give one the chance to learn how to value system resources, and come up with optimized solutions.


Konstantin Dimitrov


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