Sauron's Lidless All-seeing Eye of Anti-Theft

myminifactory

This project is designed for the Micro:bit competition. You can't escape the watchful eye! The Eye of Sauron sees all, so thieves beware! Since this is a BBC-inspired competition, I decided to go with the Tolkien route. The code will be updated later as I don't have a Micro:bit yet. This device runs on two AA batteries and can be carried in a pouch or attached to an item. Attach it to your backpack or leave it on an object. The Red LEDs will pulse periodically, giving the flame some life. Bluetooth tethering sends phone alerts! Print the flaming eye pieces with clear/translucent PETG or PLA to let the glowing red lights highlight the flame. I'll report back on a good infill setting once I've printed it. I'm unsure if the A&B buttons on the front are necessary for this code, so I uploaded two large yellow inlay versions with and without cutouts for the buttons. Print the large flame in red and one of the large inlay pieces in yellow. Print the other small pieces in yellow as well. The base is printed in black. I included nut holes in the upper spire so you can embed M3 nuts in it (pause your print and place them) or, with tight tolerances, it should be a long enough hole without needing a nut. The nut is just for added assurance. The Micro:bit goes behind the "eye" parts. Print the spacers to put between the Micro:bit and the red/back eye part to provide room for the LEDs. Print the Micro:bit mount in black as well. I recommend PETG/ABS because that's where you'll hook it to a backpack or other item using a carabiner/large key ring or other means. Secure the Micro:bit mount to the spire with two M3 nuts and screws. Then attach the Micro:bit to the mount with M4 screws. The M4 nuts get sandwiched between the large red flame and the larger yellow flame pieces. Once printed, secure the Micro:bit to the mount with two M4 screws and two nuts. Secure the base part with four 25mm M3 screws. Run the battery power cable through the slot at the top and plug it into the Micro:bit. Non-printed parts: - Screws and nuts - Micro:bit - Double AA battery holder - 9V battery plug to attach to AA holder - Plug microbit uses for 3v power in OR solder to microbit input keys For the code: Attach it to your backpack or leave it on an object. The Red LEDs will pulse periodically, giving the flame some life. When bumped, the lights will flash faster and in a different pattern warning any would-be thief that their actions are being watched. If knocked over or the Bluetooth connection is lost, an alarm will sound to keep thieves away. Never lose your backpack or other important item again! Place it against a door as an alarm. Assuming you can keep the Micro:bit connected to your device via Bluetooth (I know you upload with it, just don't know if the connection can stay live), it will send you a notification when bumped. You can also wirelessly tether it so that when it leaves the range of your Bluetooth connection, an alarm will sound from the Micro:bit and you'll receive an alert on your device. Pictures will be uploaded later as soon as I print it.