Monthly Archives: May 2009
Controlling Lots of Outputs from a Microcontroller
Making LED displays is fun. There are a a few tools that get used all the time, from row-column scanning to LED driver chips to multplexers and shift registers. This tutorial discusses some of the more popular methods for controlling … Continue reading
CD4099 Addressable Latch Used to Control LEDs
This tutorial will show how to control multiple LED outputs from a microcontroller using a CD4099B addressable latch. Parts you’ll need: CD4099B addressable latch Arduino microcontroller (Any model will do) 16 LEDs
CD4067 Multiplexer used to control LEDs
This tutorial will show how to control multiple LED outputs from a microcontroller using a CD4067 analog multiplexer. This is a stub. More explanation will follow, but for now, here are schematics and code for Arduino. Parts you’ll need: CD4067B … Continue reading
STP16C596 Shift Register
This tutorial will show how to control multiple LED outputs from a microcontroller using an STP16C596 shift register. The STP16C596 is similar to the popular 74HC595 shift register, but it’s nicer because it can sink a constant current to the … Continue reading
Tilty ball: Controlling 64 LEDs and a 2-axis accelerometer
This example shows how to control 64 LEDs and read the input from two axes of an accelerometer on an Arduino. The Arduino used here is a Duemilanove, but it will work on any of the models out there prior … Continue reading