Other PCB Candidates

A project log for Little Man Computer Trainer

This is a low power pocket computer trainer for the Little Man Computer (LMC) computer model

Chris ChungChris Chung 04/30/2021 at 18:212 Comments

Other PCB Candidates

Over the last few months, I had gone through 3 PCB designs. The hardware debugging is mostly done.

I am waiting for a "final" PCB design. There will be 15 tactile buttons, 4 units of 3 digit 7 segment LED display modules, and powered by one AAA 1.5V cell.

The design is focus on the following factors:

This one turned out to be too big to fit in a shirt pocket. Also it is not battery powered.

This design has 2 x AAA battery for power. Overall it is too large.

This design is small and compact and USB powered. I had order another PCB powered by 1 x AAA cell. Hopefully that will be the final design.


Arduino Enigma wrote 05/01/2021 at 07:14 point

I see what you did there by mixing a 3631 AS with a 3631 BS.

The 2352 displays are quite small at 15mm wide.

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Chris Chung wrote 05/01/2021 at 18:23 point

I still have 2 IO pins left. Could drive another 4 digits if needed. :)

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