**** Product version of this project available at http://ledpixelart.com *****
An Android controlled interactive mirror. Running various Android apps, the interactive mirror displays pictures, running text, simple games, and video streamed from an Android device over Bluetooth.
RGB 16 x 32 Matrix from Adafruit - $80
PIXEL Maker's Kit (includes bluetooth dongle and microSD card)
Black Fabric (an old Black T-shirt will do)
Black Foam Core Board
5V 2A Power Supply
2-Way Mirror - $20 for 12" x 12" size
Picture Frame (Antiques shops are good places to find unique looking ones)
Android Phone - 2.3.3 or above if using Bluetooth
Step 1: Installing the IOIO Board Application Firmware
For this project, you'll need to install a custom IOIO application firmware that supports the 16 x 32 RBG LED matrix from Adafruit which can be downloaded from here (scroll down the page to the RGB LED Matrix section). One cool feature of IOIO is you can install the difference firmwares using your Android device with a USB connection to the IOIO BoardIf you're a developer modifying the source code, you'll also need a special version of the IOIO libraries here. To do this, first install the IOIO Manager app to your Android device and then follow these instructions to import the RGB Matrix application firmware into IOIO manager and then download to the IOIO board over USB. Special thanks to Ytai Ben-Tsvi, the creator of IOIO, who wrote this custom firmware for this project.
There are currently two flavors of the IOIO board. The base IOIO board from Sparkfun and a version from Seeedstudio and Adafruit that includes some additional features like an on-board LiPO charger, LiPO battery, header pins, Bluetooth dongle, mini USB board power/charging port, and mint tin case.
Step 2: Wiring Schematic
If this is a permanent installation, you can cut off the other end of the included LED matrix cable (this cable ships along with the 16x32 LED matrix from Adafruit) and solder directly to the pins on the IOIO.
Before mounting in the picture frame, check that everything is wired correctly before continuing. Supply 5V power to the IOIO board and 5V power to the LED matrix. Also plug in the Bluetooth dongle to the IOIO board. Bluetooth pair the IOIO to your Android phone, the pairing code is: 4545. Then install one of the apps in step 5 on your Android Phone and run it. If all is well, then you’ll see the LED Matrix light up per the app.
Step 3: Mounting in the Picture Frame
Now cover the front of the matrix and foam core board with the black t-shirt. This is needed for the effect of the 2-way mirror. If there is any white exposed, the mirror effect will be ruined.
Secure the t-shirt using duct tape or some other adhesive.
Use a glass cutter to cut the two-way mirror to the size of the picture frame.
Step 4: Final Installation
Assuming you have covered the LED matrix correctly with the black t-shirt and there is no white showing, it will look like a mirror when turned off.
If the LED matrix is not covered in black fabric or something else that is equivalent black, the mirror effect will be lost and the LED matrix will show through the two-way mirror.
Step 5: Android Apps and Source Code
Soure code for the apps is here
|IOIO Pics to LED Matrix – Choose a pre-set image and display it on the LED matrix|
|IOIO 8-Ball – Magic 8-Ball fortune teller. Displays the answers to your questions on the LED matrix.|
|IOIO Verbage to LED Matrix – Displays random words on the LED matrix|
|IOIO Camera to LED Matrix – Streams a small portion of the camera frame to the LED matrix. This one is not really that useful as the portion of the camera video displayed is very small and is really more of a proof of concept that the IOIO LED matrix can also do video.|