3×4 Matrix keypad connected to an arduino. Displaying results of key pressed on a 7 segment led display via 74HC595 shift register which reduces the required pins of the 7seg display from 8 to 3. [Read more…] about Matrix keypad with 7 segment display (Arduino mini project)
Here is a shield for Arduino that makes adding quality sound to your products easy.
It can play up to 22KHz, 12bit uncompressed audio files of any length. [Read more…] about Adafruit Wave Shield
The LCD Button Shield from Sparkfun Electronics provides a 16×2 LCD screens along with a keypad consisting of 5 keys — select, up, right, down and left. With this shield you will be able to move through menus and make selections straight from one board attached to your Arduino without requiring a massive tower of shields. [Read more…] about LCD Button Shield V2 for Arduino by Sparkfun
Added a second joystick to the shield and use one for forward/back motion and the other for turning. I find this setup gives better control. [Read more…] about Adding Second Joystick to Joystick Shield for Arduino
This shield provides the necessary connections between the joystick and the Arduino so that it can read the joysticks X, Y and Switch readings on it’s analog inputs. I chose to mount the joystick on it’s own proto shield instead of mounting it to the prototype area of my XBee shield. [Read more…] about Wireless Arduino Thumb Joystick Shield
Video explaining what multiplexing is, why we do it and how it is done. Covers using the Arduino to handle the multiplexing and using a 7219. Using the 7219 we can control up to 8 seven segment displays while using only 3 pins from the Arduino. The 7219 also handles all refreshing of the display and requires no additional drivers on the common signal of each seven segment display.
[Read more…] about Multiplexing Seven Segment Displays