Title: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: solutions on December 28, 2013, 02:27:27 02:27 Ideally NI compatible on Windows 7 and have the drivers to where it can be accessed via a USB com port in the event I put together a quick BASIC routine in future (hey, it's fast and not fussy, so no speeches from C-snobs, please).
Needs to be turn-key and zero development other than fabbing and building the circuit board. I have too many real projects to do anything more than assemble this. Best off the shelf I've found is close to $200, and eBay pricing on used interfaces is INSANE. I'd like to do it for $20-$30 in parts. Since I'm worthless :P ,assembly labor is not an issue. thanks! Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: CocaCola on December 28, 2013, 04:15:52 04:15 Can't say if this will suit your needs, and it's in German but Google should translate it well enough...
http://www.ringwelt.de/messgeraete/17-gpib/41-gpib-usb-adapter.html Or this site http://www.rudiswiki.de/wiki9/GPIBtoUSB_PIC Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: solutions on December 28, 2013, 05:58:22 05:58 Interesting.
See attached for members I'm guessing $80 in components and the board EDIT: added another converter that has all the files needed to build one Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: CocaCola on December 28, 2013, 06:15:29 06:15 Wow they like to sock it too you on the chip and board for that Gee Whiz unit...
Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: Ichan on December 28, 2013, 08:37:17 08:37 I had no experience with GPIB things, what kind of connector is that? Expensive?
-ichan Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: h0nk on December 28, 2013, 01:26:19 13:26 Hi Ichan,
the cheapo version is to use two crimpconnectors (male and female) on both sides of the cable and a matching ribboncable. And yes, the normal version is expensive. Best Regards Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: Sideshow Bob on December 28, 2013, 03:11:32 15:11 The one from www.prologix.biz may do the job. But is more of a GPIB to virtual serial converter. Based on a FTDI chip. I used it a few years ago with labview. But it was very basic GPIB commands i used it with. Do not know if it support low level GPIB commands from labview
Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: solutions on December 28, 2013, 06:32:50 18:32 The prologix is more than double what I can spend, having been unemployed for longer than I want to admit.
There's that pesky food habit my body has which keeps getting in the way of buying stuff I'd like to get. The connector is $10 plus shipping Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: Sideshow Bob on December 28, 2013, 07:13:23 19:13 This also looks like a quite well documented project http://scasagrande.blogspot.no/2012/04/gpibusb-for-sale.html. If you scroll down you will find links to code++ in the Items of note:
section Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: Gallymimu on December 28, 2013, 09:46:32 21:46 Just a side rant. GPIB SUCKS. I can't believe how much it costs to use such a mediocre interface. I've spent a lot of time looking for decent interfaces and a few hundred $$$ was the best I could find (though I wasn't looking to build one). Really a big rip off.
Posted on: December 28, 2013, 10:40:32 22:40 - Automerged The one from www.prologix.biz may do the job. But is more of a GPIB to virtual serial converter. Based on a FTDI chip. I used it a few years ago with labview. But it was very basic GPIB commands i used it with. Do not know if it support low level GPIB commands from labview I never really understood the prologix adapter. Why would they design a converter that doesn't really support GPIB(you need to use several unique commands in addition to whatever GPIB commands you want to send). I don't get it. Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: andybiker on December 28, 2013, 11:33:30 23:33 Have a look at Elektor 2012 july/august 2012. There's a circuit that's basically a pic 18f2550 (available as a free sample from microchip!) and a few ttl chips.
The whole year is available here: http://www.sonsivri.to/forum/index.php?topic=526.msg142760#msg142760 the firmware and pcb layout is here: http://www.elektor.com/magazines/2012/july-047-august/gee-whiz-a-gpib-to-usb-converter.2188340.lynkx looks simple and cheap!! the whole circuit consists of the pic, a crystal, resistors,capacitors, one 74ls245 (to drive 8 status leds if you need them - you could leave this out though) if you can get the connectors off old boards then the whole thing could be made as a 'junkbox-project' and cost next to nothing! hope this helps. Andy Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: solutions on December 28, 2013, 11:52:53 23:52 It's not cheap. You missed the discussion in reply 2 and 3 of this thread. It'll be about $80
Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: Sideshow Bob on December 29, 2013, 11:40:42 11:40 Yes
It's not cheap. You missed the discussion in reply 2 and 3 of this thread. It'll be about $80 Yes I read that, and had no problem understanding your goal. But if you quit monkeying around :D;D. You will see that this person also share code and layout. If you scroll down to the Items of note: section. And use the link at the 3. bullet point. However I do not have any knowledge on how good or bad this project is. But it is what you asked for a complete project. Hope you give us word on how this project ended then doneTitle: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: solutions on December 29, 2013, 08:17:24 20:17 My reply was to andybiker, Bob.....
Still camping out to see what else comes in from those 8000 active members we have here. Not in a hurry (this time...). I kind of like the Gee Whiz one right now, as it's the most turnkey one. There's an interesting emulator here for capturing HP-GL/2 plots off your IEEE bus: http://www.thegleam.com/ke5fx/gpib/7470.htm which is what I'd like to do with the old, used, oscilloscope Santa brought me. Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: Gallymimu on December 30, 2013, 08:59:39 20:59 I did a little bit of looking and I think I ran across someone on EEVBlog who said that the firmware for the elektor device was pretty buggy. Don't quote me on it but you might take a look before committing to an approach. Sorry I wasn't smart enough to save the link for you.
Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: Sideshow Bob on December 30, 2013, 09:20:24 21:20 I think I have read that article on EEVBLOG just google this eevblog usb gpib
And it should pop up on one of the first hits Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: dotm on January 07, 2014, 06:16:45 18:16 There's an interesting emulator here for capturing HP-GL/2 plots off your IEEE bus: http://www.thegleam.com/ke5fx/gpib/7470.htm which is what I'd like to do with the old, used, oscilloscope Santa brought me. I can confirm this to work on a HP 8920A. All those devices that are homemade will use a serial port driver. As far as i know those from NI that are fully compatible with labview have a dedicated GPIB driver. Having to fiddle around hours in labview to enable a third party interface seems like an unhealthy option. edit: you may allready have discovered this list: http://sigrok.org/wiki/GPIB_interface_comparison Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: bigtoy on January 19, 2014, 01:53:21 01:53 I use the prologix to talk to a HP spectrum analyzer. Seems expensive for what it is, but still the cheapest I could find to do the job. Sigh.
Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: MisterX on January 19, 2014, 12:36:19 12:36 Have you seen this project ?
http://dangerousprototypes.com/forum/viewtopic.php?f=56&t=6120#p56282 Title: Re: Anyone have a COMPLETE GPIB (IEEE-488) to USB converter project? Post by: h0nk on April 15, 2014, 11:36:39 11:36 Hello,
this one looks promising: http://www.microlab.ti.bfh.ch/wiki/huce:microlab:projects:internal:gecko:gecko-system:gecko3com:start Best Regards |