Smily
thingiverse
This is a prime candidate for upgrading to a dot matrix display, with an Arduino circuit board cleverly installed inside. Meanwhile, the PIR sensor on top of the enclosure is constantly scanning for any movements in front of it. The original design that sparked this upgrade can be found here: https://www.thingiverse.com/thing:1264391 The custom-made housing for the PIR sensor is available at this link: https://www.thingiverse.com/thing:291270
Download Model from thingiverse
With this file you will be able to print Smily with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Smily.