Making a better mask

A project log for Ink and paper MCU programmer

Solving the egg and chicken problem with paper, leds and phototransistors

ftreganftregan 11/20/2016 at 11:210 Comments

I noticed this morning that the 0.5mm white paper that I used for the mask (cut into a business card) was not stopping the light from the leds. I made a new one with two pieces on aluminium foil on adhesive tape, and the result are way better.

Now I have to find a good printer to make a more opaque barcode, that will certainly help.