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Questions tagged [barcode]

Optical code made of vertical lines

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43 views

FFC Flex PCB Flat Connector for Raspberry Pi 3 B+

I have bought a barcode scanner online (promised to be specific for Raspberry Pi 3 with USB interface) but its cable does not have any connector and is just a flat cable with numbers as ...
1
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1answer
118 views

UART pins interfacing with Barcode without handshaking signals

I am concerned about bar code interface with LPC1768/LPC1769 controller.. If I use only UART-TX, UART-RX, GND pin of controller only to interface with barcode scanner module which has UART or RS232 ...
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1answer
689 views

RJ45 to RS232 With Power [closed]

I'm using a barcode scanner that will dump the coded values over a serial port and need to have power also sent to the barcode scanner over the same cord just like with the cord shown here: ...
-1
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1answer
44 views

What is “Hand Held Laser Compatible” (HHLC) protocol?

What exactly is being output by a bar code scanner if it is an HHLC device. So far, I've been able to gather that it is an undecoded signal. How is it different from the signal that is being output by ...
1
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1answer
142 views

Pen-type barcode scanner

I am designing a pen-type barcode scanner (1D) which is operated by user, which means that the speed at which the scanner moves is random. Even worse is that it gets stuck sometimes, so the signal ...
2
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2answers
104 views

Detecting numbered cards in a stack?

We are attempting to electronically determine which of 10 cards, numbered 1-10, is currently in front of a stack. Initially card 1 is in front. Eventually card 1 will be flipped around to the back ...
0
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1answer
488 views

Do barcodes allows to uniquely identify production items? [closed]

I hope this is the right place to ask. I'm trying to learn about barcodes, I did some research and I wonder if, I can uniquely identify production patches (not just products). For example, is it ...
1
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1answer
3k views

Interfacing barcode scanner with arduino using RS232

I want to connect a barcode scanner with Arduino. I used MAX232 to convert the levels. I have taken only 3 pins: 2(RX), 3(TX) and 5(GND) from the DB9 cable and given them to pins of MAX232 as shown in ...
1
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1answer
310 views

Could a barcode scanner be used to get surface depth information?

(if tl;dr, go to the part where it says "actual question") this is probably a very obscure question, but: I'm working on a rather complex art installation with computer-generated sculptures, and I'm ...
0
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2answers
406 views

If RS-232 defines electrical characteristics, what is the transfer protocol?

From this answer, it says RS-232 defines the voltage levels and what not of a signal. I want to be able to read barcodes on my microcontroller with something like this. The closest datasheet I ...
-2
votes
1answer
302 views

I have a set of USB-classed barcode scanner and microcontroller board, how do I process the data?

Questions: Is the signal already readable for the microcontroller if I have both the scanner and the board match headed with USB? I know that the scanner was programmed to output whatever the bar ...
0
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1answer
598 views

Trying to make an inventory management system using barcode scanning upon transactions

I have a project in hand that is to enable long term management of boxes of goods in the store room. My idea was to use two barcode scanners to record the INs and OUTs of the boxes respectively. The ...
2
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1answer
955 views

Barcode Scanner to Arduino/Interfacing

I've got an old barcode scanner that I've decided that I want to connect to an Arduino Uno(for the purposes of wireless transmission). After poking around I've found some information that states that ...
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2answers
805 views

Building a weight scale [closed]

I need to build a scale that is able to get an input from a load cell, get an input from a bar-code scanner (i don't know if this is to be treated like a keyboard or if there is a more native way to ...
0
votes
1answer
296 views

Communicating by RS-232

I'm trying to communicate with a serial barcode scanner. This is how i've linked it to my computer (the circles represent the color of the wires already soldered in the serial plug) : http://img441....
4
votes
1answer
286 views

Reading useful data from barcode input

I have interfaced a HID bar-code scanner with LPC2468. It is sending data when i scan a bar-code, it sends a lot of bytes when i make a scan, how can i know out of these bytes which are the bytes ...
2
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2answers
2k views

How do I connect a 14-pin ZIF?

I'm a student that is trying to learn hardware by building various devices, in this case a barcode reader from scratch. I bought a barcode scanning engine that has a 14 pin ZIF, pitch 0.5 mm (0.2 in) ...
2
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1answer
3k views

How to connect USB barcode scanner to a PIC?

I've got a bog standard barcode scanner with a USB output and I'm trying to figure out how to connect it to a PIC. Basically, the idea is that I use the scanner to scan a barcode and the barcode is ...
1
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1answer
593 views

Standalone Barcode Reader that checks against file

What I'm looking for is a standalone barcode reader device that checks a barcode against a list of numbers stored on the device and returns the status (valid/not valid/...) associated with the ...