Ch00ftech Stickers – 2</strong>  <strong></strong>Decorate your laptop, oscilloscope, or portable Tesla coil with one of these durable ch00ftech stickers.  <form action="" method="post">Each sticker measures 1" x 5-9/16" and has a matte finish.  Free shipping to U.S.</form><form action="" method="post"></form><form action="" method="post"><input type="hidden" name="cmd" value="_s-xclick" /> <input type="hidden" name="hosted_button_id" value="XRPA3Z5RA7UB6" /> <input type="image" name="submit" src="" alt="PayPal - The safer, easier way to pay online!" /> <img src="" alt="" width="1" height="1" border="0" /> </form>  <hr />  <a href=""><img class=" wp-image-3452 alignleft" title="IMG_1779.jpg.500x300_q85_crop-smart" src="" alt="" width="299" height="179" /></a>  <strong>QR Clock -<del>100

Confuse your friends and colleagues with this deliciously impractical yet attractive QR code clock! Rather than displaying the time in any format that a human can understand, the QR clock requires the use of a QR code reader to make sense of the time. Of course, this reader will probably reside on a smartphone which has a built in clock, but…that’s beside the point.

The time is displayed as a Version 1 21×21 pixel QR code. Try to scan the image on this page for a quick demonstration. It measures 8×8″ and features a brilliant white display that automatically adjusts to ambient lighting allowing it to be clearly visible during the day without being distracting at night. It has a simple mounting system on the back that will work perfectly on a standard picture hanging nail. The soft rubber pads under the display will keep it from damaging the wall.

The prototype displayed here is powered by a DC barrel jack power supply, but the final version will run off a standard 5V, 2A micro-usb smartphone charger (not included). Make sure to order one with a long enough cable for your mounting situation.

The QR clock also doubles as a development platform for makers who want a standalone 24×24 pixel display. The device is driven by an ATMega328 running at 11.0592MHz. By press-fitting a 2×3 header into the programming header slot, this device can be reprogrammed to do anything you want. The RX and TX lines are also left available for external communication.