David Watts


4000 Series Logic ICs: The 4051 8-channel analog multiplexer/demultiplexer IC

Playing around with 4000 series logic ICs, this is the 4051 an 8-channel analog multiplexer/demultiplexer. It takes 3bit binary select input which determines the seledcted input/output and the common input/output is used to input an analog signal or output signals coming from the selectable inputs. Great if you want to expand the analog ability of…


NeoPixels/WS2812B : One wire RGB wonders

NeoPixel may well be the Adafruit trademark name for these WS2812 modules but it sure is catchy. I am using the Adafruit NeoPixel Library – https://learn.adafruit.com/adafruit-neopixel-uberguide/arduino-library 100 x WS2812 – http://www.aliexpress.com/item/colorful-led-Free-shipping-WS2812B-LED-With-Heatsink-10mm-3mm-DC5V-5050-SMD-RGB-WS2812-IC/32463398304.html