Posted on Leave a comment

USB Flash Drive

Disk
Disk

Here is a cheap chinese made flash drive given out for free by Westlaw UK. Capacity 512MB

PCB
PCB

Here is the PCB removed from the casing, USB connector on the left, followed by the clock crystal for the flash controller, a CBM2092, which is a Chipsbank part. 512MB flash memory IC, unknown maker.  Access LED on far right of the board.

Posted on 2 Comments

Epson Ink Cartridge Resetter

Interface
Interface

This is a device designed to reset Epson brand ink cartridges that are reportedly out of ink, so they again report full to the printer Here is the front of the unit, with the guide for attaching to a cartridge.

PCB Back
PCB Back

Back of the device removed. 3 button cells provide power to the PCB. Indicator LED sticks out of the top of the device for reset confirmation.
Row of pads on far left edge of the PCB are presumably a programming header for the uC on the other side of the board.

PCB Front
PCB Front

Here is the  front of the PCB, main feature being the grid of pogo pins to connect to the cartridge chip. IC on lower right of that is a MSP430F2131 uController, a Texas Instruments part.
The IC directly to the left of the pogo pin bed is a voltage regulator, to step down the ~4.5v of the batteries down to the ~3.3v that the uC requires.

Posted on Leave a comment

Nokia 7110

Front
Front

Another phone from the mid 90s. This is the nokia 7110.

Slider Open
Slider Open

Here the slider is open showing the keypad.

Battery Removed
Battery Removed

Here the battery is removed, a Li-Ion unit.

Battery
Battery

The battery cell & protection circuit removed from the casing.

Rear Of PCB
Rear Of PCB

This is the rear of the PCB removed from the housing. Data & charging ports on the right hand side f the board.

Front Of PCB
Front Of PCB

Front of the PCB with the RF sections at the left hand side & the keypad contacts on the right.

RF Sections
RF Sections

Closeup of the RF sections of the board, big silver rectangular cans are VCO units.

SIM Connector
SIM Connector

Closeup of the top rear section of the PCB, with SIM cnnector, battery contacts, IR tranciever at the far left. Bottom centre is the external antenna connector.

CPU
CPU

The logic section of the board, Large chip is CPU, to right of that is the ROM storing the machine code. Other chips are unknown custom parts.

Mic & Speaker
Mic & Speaker

The Mic & the loudspeaker removed from it’s housing.

LCD
LCD

LCD from the front of the unit, SPI interfaced. Flex PCB also contains the power button, loudspeaker contacts & a temperature sensor.

Scroll Wheel
Scroll Wheel

The scroll wheel removed from the front housing.

Vibra-Motor
Vibra-Motor

Tiny vibration motor removed from the rear housing, alerts the user to a text or phone call.