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Roku LT Teardown

 

Roku LT
Roku LT

Here’s another retired piece of tech that we used to route media from the NAS to the main TV. It was retired since it’s inability to support XBMC/Kodi & having some crashing issues.

Main PCB
Main PCB

After attacking the case with the screwdriver (Torx in this case), the main board comes out. The CPU in this looks *very* familiar, being a PoP device. There are unpopulated places for an ethernet interface & USB port here.

Flash & CPU
Flash & CPU

After a little digging is turns out the CPU in this device is a BCM2835, with 256MB of RAM stacked on top. It’s a Raspberry Pi! Even the unpopulated part for Ethernet is the same SMSC LAN9512!
There’s 32MB of Flash for the software below the CPU.
On the far right of the board is a Broadcom BCM59002IML Mobile Power Management IC.

WiFi Chipset
WiFi Chipset

On the bottom of the PCB is the WiFi chipset, a Broadcom BCM4336, this most likely communicates with the CPU via SDIO. There’s also a section below for a Bluetooth chipset.

 

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Sigma Mini Keychain LCD Photoframe

Front
Front

This is a cheap Sigma branded keychain photoframe. User buttons for power & selecting photos are on the left.
There are two white LEDs on the bottom edge that function as a torch as well.

Display
Display

Front of the unit removed, showing the LCD module. The USB jack is bottom left, next to the pair of white LEDs & above that is the 32kHz watch crystal that the CPU uses for timekeeping.

Back Removed
Back Removed

Here the back has been removed showing the 3.7v Li-Ion cell used to provide power.

Display Folded Back
Display Folded Back

Here the display has been removed from the PCB exposing the chipset.

Chipset
Chipset

Here the CPU blob-top chip & a flash memory IC are visible. The CPU is a Sitronix ST2205U.

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Garmin eTrex

Front
Front

Pocket sized GPS navigator. Here is shown the greyscale dot matrix LCD.

Interface
Interface

Serial interface on the back of the unit. Pinout from left is +3v, Rx, Tx, GND.

PCB Back
PCB Back

PCB Removed from the casing. RTC backup battery in the centre of board, CPU & flash ROM on the left. GPS chipset is under the shield on the right.

PCB Front
PCB Front

Front of the PCB, GPS antenna on the right, LCD panel left.

LCD Removed
LCD Removed

LCD folded back from the PCB. Driver IC can be seen attached to the ribbon.

Electroluminescent Panel
Electroluminescent Panel

LCD Panel backlight. Requires 200v AC at 20kHz to glow green.

GPS Reciever
GPS Reciever

GPS chipset with the shield removed.

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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.

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Motorola V360v

Front
Front

Here is a more modern phone, the Motorola V360v. Features include Dual screens, 640×480 VGA camera, full col

our TFT Main LCD, SD-Micro slot.
Here on the back the grey scale LCD can be seen, with the camera lens to the right of the Motorola logo

Keypad
Keypad

Here the phone is opened showing the keypad & the full colour TFT LCD display.

Battery Compartment
Battery Compartment

Here the battery is removed from the unit, showing the SIM connector. The antenna cover is still on at the bottom.

Antenna
Antenna

The antenna cover has been removed in this shot, the antenna is the white section at the bottom, With the loudspeaker & the external antenna connector hidden at the right.

PCB
PCB

Here is the main PCB. Parts from left are the Bluetooth module at the top, supplied by Broadcom, the SD Card socket at the bottom. Main CPU next to that is the Freescale SC29343VKP. Above right of the CPU is the Freescale SC13890P23A Charger, Power & Audio IC. Below is the SIM card socket. Under the main CPU is the Intel Flash memory IC. ICs inside the shields are the RF sections for transmit & receive.

Cover Removed
Cover Removed

Rear of the display unit showing the monochrome LCD. The camera module on the bottom left. Ear speaker on the far right of the unit.

Main LCD
Main LCD

Main colour TFT LCD.

Camera
Camera

Camera module removed from the LCD unit.

Vibra-Motor
Vibra-Motor

The vibration motor attached to one of the LCD looms.

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HP Photosmart 375

Top
Top

This is a HP PhotoSmart 375 portable photo printer. With built in card reader, screen & PictBridge.
Top of the printer showing the UI Buttons & Screen.

Front
Front

Front of the unit, card reader slots at the top, Pictbridge USB connector at top left. Paper out slot at bottom. Cartridge door is on the right.

Cartridge Door
Cartridge Door

Here the cartridge door is open. Takes HP 95 Tri-Colour Inkjet Cartridge.

Battery Compartment
Battery Compartment

Battery compartment on the bottom of the unit. A Li-Ion battery pack can be installed here for mobile photo printing.

Bottom Label
Bottom Label

Specifications label.

USB + Power
USB + Power

Power adaptor & USB connection for PC use.

Paper Tray
Paper Tray

Rear door opened. Showing the paper feed tray.

Paper Feeder
Paper Feeder

Rear door has been removed in this shot. Paper feed roller & platen roller can be seen here.

Rear Cover Paper Feeder
Rear Cover Paper Feeder

Paper holder attached to rear door.

Top Cover
Top Cover

Bottom of the top cover, with connections for the buttons & LCD panel.

Main PCB
Main PCB

This is the main PCB of the unit. Controls all aspects of the printer. CPU in center, card reader sockets are along bottom edge. various support circuitry surrounds the CPU.

Rear
Rear

Rear shell has been removed here. Showing the main frame & the carriage drive motor on the left.

Carriage Drive
Carriage Drive

Closeup of the carriage drive motor & timing belt system. All the motors in this printer are DC servo motors, not steppers.

Main Drive Motor
Main Drive Motor

Main drive motor, feeds paper, drives rollers, operates cleaning mechanism for the inkjets.

Shaft Encoder
Shaft Encoder

Mainshaft encoder. Main drive motor is bottom right hand side with timing belt drive.

CPU
CPU

Closeup of the CPU. This is a Phillips ARM chip, unknown spec.

Card Reader Sockets
Card Reader Sockets

Detail of the card reader sockets, this unit takes all current types of Flash memory card.

HP 95 Tri-color Inkjet Print Cartridge