P01-118 GeePibber

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P01-118 GeePibber

Postby asgard » Tue Apr 09, 2013 1:00 pm

This project is an IEEE-488 (GPIB / HPIB) to USB adapter. I need this because I recently acquired an ancient (but so am I) logic analyzer/oscilloscope which uses only the GPIB to read out and load the instrument's current state (including state inverse assemblers).

P01-118A_GeePibber_PCB.jpg
P01-118 GeePibber PCB


P01-118A_GeePibber_schematic.jpg
P01-118 GeePibber schematic
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Re: P01-118 GeePibber

Postby kdittyr » Fri Apr 12, 2013 5:09 pm

asgard, this is great. I've been looking for a GPIB to USB device at a reasonable price. Are these going to be available for purchase?
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Re: P01-118 GeePibber

Postby brian » Fri Apr 12, 2013 8:21 pm

There was a rather long discussion of GPIB here: viewtopic.php?f=2&t=3769

I don't know if there was any solution. I think I mentioned in the other thread that I originally intended my Eridani board to be used for GPIB, but I didn't get to it. I recently resurrected the idea, I actually designed my board last weekend but mine is going to be a single chip solution to help with costs.

If you are in a hurry there are 50-60 dollar GPIB solutions on eBay.
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Re: P01-118 GeePibber

Postby kdittyr » Sat Apr 13, 2013 9:06 pm

@brian - thanks, I have plenty of time to pick up a solution. I've just been weighing my options, the more the better.

I'll check out that post.
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Re: P01-118 GeePibber

Postby asgard » Sat Apr 13, 2013 11:36 pm

kdittyr wrote:asgard, this is great. I've been looking for a GPIB to USB device at a reasonable price. Are these going to be available for purchase?


It was not my original intent. I actually just wanted to have this at a price I can manage, which is a heckuva lot less than the $400-$500 I have been seeing around. I looked at one that was cheap from an Australian supplier, but I am told it is an epic fail.

I am going to hold off on selling any PIC-based products until I can work out my troubles with the Rapper's. I am hoping really hard I haven't screwed the pooch on specifying a PIC12F1822. Apparently those are specially problematic with my dinky old pickit2. Particularlty when Microchip pulls the rug out on us mere mortals.
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Re: P01-118 GeePibber

Postby asgard » Sun Apr 14, 2013 8:18 pm

Well, here's how it was: Lesson one. Penny wise and pound foolish. It was, in retrospect, not such a good idea to buy a reel of cheap capacitors, even if it comes from Panasonic, which supposedly has a very high rep. Name of the game is to not buy Y5V rated dielectrics unless you want to test out each and every one. Yurk. No wonder they were so reasonably priced, eh? :)
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