Have you ever felt like your life was missing a wearable wireless device? One that you could wear as a pin or a necklace? One that looks pretty and doesn't do much else? Well, enter the pocket lint.

This is the new round + touch screen version of the original Pocket LINT, using an ESP32 dev board with a built-in 1.85" touch screen. The OEM wiki for developing with this board is available here.

The backing is a two-piece design with opposing magnets. You can get away with one backing, but it will fall down the inside of your shirt if you're not careful taking it off. The two-piece system allows for maximum adhesion through fabric (magnets facing each other with your shirt in the middle) with a lower-force removal of the Lint itself from the backing so it doesn't always fall down your shirt. 

Plus, this way, you can wear multiple pairs of backings for a hot-swap system. Put one on your sleeve and one by your collar, and switch between an arm pin and wireless necklace, respectively. Just for fun.

In addition to the 3D printed parts, you'll need the following:

• (1x) ESP32-S3-Touch-LCD-1.85 (Waveshare)
• (1x) 3.7V 500mAh Li-Polymer Battery (PH 1.25 JST Connector) (Amazon)
• (3x) M2x4mm Socket Head Cap Machine Screws (AA149)
• (3x) M2x6mm Socket Head Cap Machine Screws (AA022)
• (6x) D5x3mm Round Magnets (CA006) [(18x) for 1 Pocket Lint + 2 Backings]
• (1x) Stainless Steel Eye Bolt 1.0x4x10 mm (FC006) [Optional]

For assembly, it's quite straightforward:

1. Remove support material, including from the screw holes. A push pin or tweezers can help push out the little ones.
2. Insert the button into the housing.
3. Place the display in the front, and screw it in from the inside with the (3x) M2x4mm bolts.
4. Plug in the battery.
5. Optionally, add a small piece of non-conductive foam between the board and the battery to reduce rattling.
6. Place the cover on the back and screw it in with the (3x) M2x6mm bolts.
7. Insert the magnets into the back, ensuring the same polarity across the plane. For MagSafe accessory compatibility, be sure to use an actual MagSafe device as a reference to orient the magnets with its inner ring.
8. Optionally, screw an eye bolt into the pilot hole in the top of the case.
9. Insert the magnets into the backings if you are using them. When printing a complete pair of backings, be sure to oppose the polarity of the magnets on one side.