Linobox

This is a case for an ESPuino for playing music using RFID tags

There are two versions for the back panel:

• USB-C port or
• magnetic connector (round opening)

Bill of Materials

• Mini4l + headphone board
• LiFePO4 battery - Emerit
• Speaker (VISATON Hi-Fi full-range speaker, 8 cm, FRS 8, 8 Ohm) - ELV
• 24 LED Neopixel ring (86mm outer diameter)
• RF sensor - e.g. PN5180 Aliexpress
• Buttons 16mm - Aliexpress
• 3mm felt - Amazon
• Rotary encoder - Aliexpress
• DIY USB-C extension or magnetic connector (for v2 back panel)
• NFC tags for the cards - Aliexpress
• several M3 screws various lengths and 4 matching nuts

Instructions

1. Press both "main" box halves together so that the snap-fit engages
2. Glue felt all around firmly - double-sided adhesive tape (carpet tape) is perfectly suitable
3. Roughly cut out large openings on the top and expose the hole for the headphone jack on the side - with a utility knife or scalpel
4. Insert and screw in Mini4l and battery
5. Place the "top" and screw it on - for this, remove the felt at the screw holes
6. Plug in the connectors for the buttons and rotary encoders
7. Screw the speaker to "front_speaker"
8. Insert the LED ring into "front_speaker_grille"
9. Assemble the front parts and screw them to the "main" box from the inside. Plug the connectors from the LED ring and speaker into the board
10. Insert battery
11. Glue the RF sensor to the "top" with double-sided adhesive tape
12. Screw the headphone board to the "back", connect it to the main board, and attach / glue the USB-C or magnetic connector into the back panel
13. Screw the back panel from the outside