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geekhack Community => Off Topic => Topic started by: tp4tissue on Sun, 08 November 2015, 11:47:05

Title: Serial port
Post by: tp4tissue on Sun, 08 November 2015, 11:47:05

So....

Can someone tell me why  an adapter with FGPA circuit is more expensive than one with an off the shelf chip like Oxford PCIe952

the FGPA one costs 2x as much..  But I honestly have no idea why.. it may just be a new product..

Title: Re: Serial port
Post by: digi on Sun, 08 November 2015, 11:51:34

Is this a usb to serial (db9) adapter? The cheap adapters suck with putty/console but I'm not sure what you're using it for..

Title: Re: Serial port
Post by: tp4tissue on Sun, 08 November 2015, 12:05:58

Quote from: digi on Sun, 08 November 2015, 11:51:34

Is this a usb to serial (db9) adapter? The cheap adapters suck with putty/console but I'm not sure what you're using it for..

i need to communicate with a fanuc.

it's an expresscard adapter,  not usb.

Title: Re: Serial port
Post by: tp4tissue on Sun, 08 November 2015, 19:18:03

Is everyone not usings serial port these days? (http://www.cute-factor.com/images/smilies/onion/1b38f9e2.gif)

Title: Re: Serial port
Post by: rowdy on Sun, 08 November 2015, 19:54:15

I'm using a USB to serial adaptor.

Title: Re: Serial port
Post by: hudson0804 on Mon, 09 November 2015, 03:02:20

Quote from: rowdy on Sun, 08 November 2015, 19:54:15

I'm using a USB to serial adaptor.

+1

However i have to carry two as one of them refuses to work with NT version 6.1 and above...

Title: Re: Serial port
Post by: rowdy on Mon, 09 November 2015, 03:27:01

Quote from: hudson0804 on Mon, 09 November 2015, 03:02:20

Quote from: rowdy on Sun, 08 November 2015, 19:54:15

I'm using a USB to serial adaptor.

+1

However i have to carry two as one of them refuses to work with NT version 6.1 and above...

Why not just carry the one that DOES work with NT 6.1+?

Title: Re: Serial port
Post by: hudson0804 on Mon, 09 November 2015, 07:05:16

In my mind my sentence made sense.

One cable works 6.1 and up but does not work 6.0 and down.

Hence two. 

Title: Re: Serial port
Post by: keshley on Mon, 09 November 2015, 10:16:57

ExpressCard seems overkill for this application.

I haven't used anything requiring RS-232 in ages, but seems like a USB adapter would be cheaper/easier. Any particular reason you're looking at ExpressCard?

I'm guessing the price difference is likely due to demand. There's probably a lot less demand for the adapter with the FPGA circuit.