First working units

A project log for 4014 LED minimodule

A cheap, small module that displays two 7-segments digits with simple multiplexing

Yann Guidon / YGDESYann Guidon / YGDES 09/06/2016 at 18:370 Comments

After yesterday's discovery while assembling the first #DYPLED prototype, I couldn't resist trying this other type of 4014 LED on the rev. 0 boards that I thought would be useless.

I couldn't wire all the segments but you get the idea from this crude setup:

I have noticed that the luminosity is very high at 3.3V and 1K series. Apply PWM ! Instead I lowered the voltage to around 2.7V to get a comfortable contrast.