LucidTronix is a new Open-Source Electronics designer. We make
tutorials,
as well as transparent, beautiful, and lucid
devices.
Read more
about us here.
Add sound to your project with this little ear-shaped circuit. Interfaces easily with Arduino or your favorite micro-controller. We supply code for v...
CD4021
The CD4021 is a common parallel-in serial-out shift register. You can get them at
digi-key
or many other electronics retailers. They give you multiple inputs all for the price of only 3 pins on the micro-controller. Check out our
introductory tutorial on shift registers
to get started. These chips are born to be
Daisy-Chained
, which is what we do with them in our
AlphaZed Keyboard
.
Tutorials
Shift Registers help you multiply your inputs and outputs....
4 Daisy chained CD4021 shift registers gives us 32 inputs....
Connect shift registers together to get more output and input pins from your microcontroller....
Keyboard kit using CD4021 shift registers and big through hole buttons....
32 buttons for a fully-functioning hand-held USB keyboard....
A QWERTY keyboard you build yourself....
Products
Open Interactive Tag Tree
