"Ikoka Nano" Pocket Case

The Ikoka Nano Pocket Case is a compact enclosure for the Meshtastic device designed by Andrew Yong.
It’s built around the Seeed Studio XIAO BLE board (nRF52840) and the EBYTE E22-XXXMXXS (i.e. E22-400M30S) LoRa radio module – combining low power consumption with excellent RF performance.

Features

• Compact design – fits comfortably in a pocket (antenna-dependent)
• Space for a flat LiPo battery
• USB-C port accessible from the side
• Integrated on/off switch
• Buzzer mount (for the modified Ikoka Nano PCB)
• Snap-fit design with 1 optional screw for extra security
• Lanyard hole with optional axis reinforcement
• No supports required – prints cleanly on FDM printers

Battery

Designed for a 4×33×50 mm LiPo, but there’s room for up to 40×50 mm if needed. Also, a margin for a 2 mm antenna cable is designed.

A larger bottom part for 7 and 10 mm batteries is also included (have not tested).

Power Switch

Uses a 2-position micro switch from AliExpress (11.5 mm base width).

Printing Notes

Orientation: print both parts flat on the bed. Layer height: 0.2 mm recommended. Material: PLA, PETG (for outdoor). No supports or brims needed.

Assembly Steps

Please do not use power connectors – they will not fit the case. Solder power cable directly to the connector pins, or use modified PCB.

Solder the battery to the switch and PCB. The positive wire should disconnect when the switch is in the Off position.

Insert the battery into the case (bottom side first).

Route the antenna cable through the hole, secure it with the nut, and attach the antenna.

Place the Ikoka Nano PCB in the case — insert the Type-C connector first, then snap it down gently.

Align the power connector with the small bumps that act as temporary supports (it’ll be locked firmly by the top cover).

Install the 9 mm buzzer (for the modified Ikoka Nano PCB) in its holder on the top part.

Test power and buzzer operation.

Close the case starting from the bottom — make sure no wires get pinched. Press gently along the seam to snap-fit the two parts together.

(Optional) Secure the top with an M2×4 mm screw next to the antenna.

(Optional) Attach a lace or metal ring through the lanyard hole for easy carrying.

P.S.

To charge the battery via the Type-C port, you need to keep the power switch On. ;) Long green blinks of the onboard LED are the indicator of charging (firmware 2.6)