TTL Componet

Projects General Guidance
1

I am about to buy a component for my project and it comes in two options: TTL or with a decoder (RS232 or USB).

The option with decoder is more expansive and makes my project not so viable for this project.

I have an arduino duemilanove and my question is how hard is to implement communication with TTL without decoder?
What should I have to do first?

2

What should I have to do first?

Probably nothing, but how far and how fast?

Rob

3

I have an arduino duemilanove and my question is how hard is to implement communication with TTL without decoder?

I suspect your misusing the word 'decoder' in this context. The Arduino board uses TTL levels for it's serial send and receive pins.

What should I have to do first?

Post a link to the 'component' you are considering, showing it's optional properties.

Lefty

4

You're finding for a 5V TTL to RS-232 converter?? If thats the case get a MAX3232 IC and build the circuit it converts 5V TTL to roughly +/- 9V.
If you're looking for a easier circuit without the capacitors get MAX233 IC but i'm not sure how much will the output be for MAX233.
Here are the datasheets you can have a look at them.

http://datasheets.maxim-ic.com/en/ds/MAX3222-MAX3241.pdf

http://datasheets.maxim-ic.com/en/ds/MAX220-MAX249.pdf

5

Thank you all.

To clarify my question here is the component documentation:

It has the option to come with RS232 or USB decoder or TTL only.

I guess it's possible to comunicate with "translating" data via software with the Arduino.
But I have yet no idea on how to do that.

6

yamandu:
Thank you all.

To clarify my question here is the component documentation:
CD-620&FCCD-620 Series Specification.pdf - Google Drive

It has the option to come with RS232 or USB decoder or TTL only.

I guess it's possible to comunicate with "translating" data via software with the Arduino.
But I have yet no idea on how to do that.

I would first find out from the manufacturer or vendor whether if I bought the TTL module, I could purchase the decoder later (if needed). The fact is, there is a ton of open-source code out there on barcode decoding; now, getting it to run on an Arduino might be a challenge (if possible at all - worst case, you simply pass the data from the Arduino to a PC or other machine to decode it).

7

I bought the component with the decoder option as it will speed up the prototyping and it can be removed (apparently).

Thanks for the replies. They all helped.

More news after the tests.