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Opticon OPN-2001 Barcode Scanner

OPN-2001
OPN-2001

Random teardown time!

The OPN-2001 is a very small handheld barcode data collection device, used for stock keeping, inventory, etc.

It’s powered by an internal Li-Poly cell, at 150mAh, and has storage for 1000 barcodes in it’s internal memory.

USB
USB

The unit is charged via it’s USB port, the data can also be downloaded using this interface.

ID Label
ID Label

Here’s the bottom of the unit with it’s label. Serial number removed to protect the guilty. šŸ˜‰

Cover Removed
Cover Removed

Here the bottom cover has been removed from the scanner, showing the internals. The barcode engine is on the left, this contains all the hardware & logic for scanning & storing the barcode data. The Li-Poly cell is under the FFC cable wrapped in foam tape for protection.

PCB Removed
PCB Removed

Here’s the PCB & engine assembly removed from the casing. The lower PCB appears to just handle the user interface buttons, beeper & USB power & charging circuitry. All the processing logic is on the barcode engine itself.

PCB Reverse
PCB Reverse

Here’s the back of the support PCB, with the pair of buttons for scanning & deleting barcodes. Also on this board is a 32kHz clock crystal & a Ricoh RV5C386A RTC IC. This communicates with the main processor via IĀ²C for storing the date & time with the barcodes. At the bottom right corner are some of the power supply passives.

Support PCB
Support PCB

Here’s the other side of the support PCB, with the beeper, battery connector & the switching regulator to provide the barcode engine with 3.3v power.

Barcode Engine
Barcode Engine

Here’s the barcode engine itself, which is absolutely tiny, at roughly 20mm square. The main processor & it’s associated Flash ROM are on this PCB. The main processor has an ARM7 32bit core, with 64kB of RAM, and onboard 512kB of ROM for program & barcode storage.

Mirror
Mirror

Here’s the business end of the barcode engine, the mirror vibrates at 100Hz to produce the scan line. The laser diode is rated at 1mW, 650nm. This is in the deep red range.

 

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Fluval 203 Canister Filter

Assembly
Assembly

Here is an old fish tank external filter & a few pics of the insides.

Label
Label

Label on the front of the pump head. Fittings on either side of the motor are water I/O.

Pump
Pump

Underside of the pump head, inlet is on the right, outlet from the pump is on the left. Pump intake in centre.

Pump Parts
Pump Parts

Pump disassembled. This pump requires no shaft seals as the impeller is driven magnetically with a synchronous motor.

Filter Stack
Filter Stack

Filter stack removed from the unit. From left: foam media, activated charcoal/gravel & ceramic pellets.