Review on 🔦 10-Pack USB Powered LED Night Light Keychain Lamp for Camping - Portable & Bright (3-LED, Non-Dimming) by Draven Louton

Perfect little lights for 3D printed lithophane. My Showcase design (part number 2664506 on Thingiverse, under user Rebeltaz) was designed around this module, but I didn't make the base thick enough for the USB connector - it would be too thick - so I just cut off the end of the USB cable and soldered the wires directly to contact pads. If the LEDs are at the top and the pads are at the bottom, the contact on the right is positive and the contact on the left is negative. The middle two are data lines and are not connected to this module. To make the light behind the lithophane more even, I lined the inside of the case with aluminum foil tape of the type used when working with air conditioning ducts. At this price (10 pack at $7 at the time of my purchase) you can't beat them!