barcode

um..., Hi

hey,

i was thinking it woul;d be cool to prgm a bot with barcodes and a barcode reader has anyone done this or does anyone have any advice?

-MM

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Paul Baker

Yeah your in luck; the newest Parallax robot, the Scribbler, will have this functionality by using its line sensor. Pre orders are $10 off ($89).

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·1+1=10

um..., Hi

i was wondering if thwere was or is a way to conect a barcode scanner to my BS2 homework board? (dont worry about the complexity of the circuit, i always like a challenge!) not to mention i dont have the $$ for a scribbler! lol

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Paul Baker

I would start with a line scanner module then use PULSIN to measure the width of the pulse. You would need to scan the barcode perpendicularly at a nearly constant speed. Your program would measure the registration bar then guess the width of each successive bar, eventually aquiring all bars. Then you will have to figure out the bars to number translation routine.

Using a commercial·barcode scanner would depend upon the model, clearly youd want either a parallel or serial interface and not·USB.

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SPENCE

Mm

zebra may still make a pen type barcode universal scanner that hooks up to a rs-232 port. My recolection is that after programming to a specific mode it stays set up on that particular code. I use mine on upc code. The original wand is made by hewlet packard......

73
spence
k4kep

um..., Hi

thanx for all th help guys i will start trying different things when i ge a scanner!

-MM

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TD-Linux

My favorite scanner is All Electronics cat # BCS-84. It uses a serial interface and is programmable with some DIP switches inside. It is CCD-based and so requires no movement to scan barcodes. The only problems: It draws up to an amp (!) and has been sold out by All Electronics. You could try the CueCat, but it requires Base64 decoding and a swiping motion to read the barcode. Look around at surplus places, because normal bar code readers are horribly expensive.

Mr.Ed

Hi everybody,

I followed the conversation about·the barcode reader.

Some time ago, i picked up a Datalogic DLC7070-M1 from Ebay. It cost me about 20 or 30 Euros and it can be configured to work between a pc's keyboard, like a pen reader, or just act like a normal RS232 device.

It works up to a distance of about 20cm's (8 inches?) and it's just aim and shoot, with a trigger.

I'm sure that such a device can be altered to fit into the described situations.

Good luck with the project!

Ed.