Gpusb-ah

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funkysandman
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Gpusb-ah

Post by funkysandman » Fri Jan 15, 2016 8:58 am

A fellow enthusiast sold me his gpusb to allow my laptop to talk to my celestron c8 deluxe. I downloaded the drivers and had unexpected results as the mount did not seem to respond properly. I discovered that this was a special version..Gpusb-ah meant for a very specific mount. Is there a way to get this to work or am I out of luck?

dpanderson
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Re: Gpusb-ah

Post by dpanderson » Fri Jan 15, 2016 5:04 pm

There is one part that would need to be changed to make the conversion. If you have the ability to unsolder the old part and resolder a new one, I can provide the part. If not, you can return it to me and I can make the conversion.
Doug Anderson
Shoestring Astronomy
http://www.ShoestringAstronomy.com

funkysandman
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Re: Gpusb-ah

Post by funkysandman » Fri Jan 15, 2016 5:22 pm

Is it the TLP521-4 quad optoisolator?
I can solder

dpanderson
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Re: Gpusb-ah

Post by dpanderson » Sat Jan 16, 2016 10:46 am

Yes, it is the optoisolator.

The GPUSB-AH should have a TLP620-4 mounted on the bottom of the board.
The GPUSB should have a TLP627-4 mounted on the top of the board (same side as microcontroller). Pin 1 is the square solder pad.
Doug Anderson
Shoestring Astronomy
http://www.ShoestringAstronomy.com

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