Celluon Magic Cube laser keyboard

Laser projection keyboard from 2011 manufactured by Celluon. This company does not seem to exists anymore, at least its webpage is dead.

While it cannot fully replace regular keyboard, it might be convenient for some mobile devices or simply for testing Bluetooth and it is definitely a conversation piece.

Given its age it is no surprise that battery has degraded, notably self-discharging in two or three weeks after the charge and it has to be swapped.

FCC has published internal photos of this device: Internal-Photos-1443402.pdf, though it was not clear for me how to disassemble this.

Celluon Magic Cube

Celluon Magic Cube

Back: on/off switch, mini USB, Bluetooth HID/SPP switch.
Celluon Magic Cube

Celluon Magic Cube

Celluon Magic Cube

Side panels are glued with thin double sided tape and need to be removed first before unlatching the back.
Celluon Magic Cube

ATtiny13A
LTC4055: USB power manager and Li-Ion battery charger.
Celluon Magic Cube

CLM6520R SoC.
Celluon Magic Cube

Celluon Magic Cube

583040 LiIon cell, slightly bloated.
Celluon Magic Cube

Back of the board: CSR BC417 Bluetooth module.
EN25QH16: 16 Mbit SPI flash.
Celluon Magic Cube

Celluon Magic Cube

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