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Broken Happ Trackball
NickG:
Check for a fault in the emitter/detector on the right side PCB. The diode side and the phototransistor side of the should be the same as the one on the left. The led is a likely failure point. The +V supplied to it and ground should also be the sameas the other axis'. If it has a part number on it it should be easy to find a replacement part from mouser.com or somewhere....and maybe even a pinout to make things easier.
A dirty way to test it is to effectively swap it to the other axis by desoldering both pairs and soldering it onto the left side. (make sure you know which side is the LED and which side is the phototransistor.)
If you are sure the optic pair is good, however, then follow through with the IC and the rest of the components.
If you can't just get replacement PCB's from Happ, and can't find suitable optic pairs or whatever IC is on there, then you could just strip the boards and hack some cheap mouse's optics onto them.
AtomSmasher:
--- Quote from: NickG on January 16, 2007, 12:18:40 am --- Check for a fault in the emitter/detector on the right side PCB. The diode side and the phototransistor side of the should be the same as the one on the left. The led is a likely failure point. The +V supplied to it and ground should also be the sameas the other axis'. If it has a part number on it it should be easy to find a replacement part from mouser.com or somewhere....and maybe even a pinout to make things easier.
A dirty way to test it is to effectively swap it to the other axis by desoldering both pairs and soldering it onto the left side. (make sure you know which side is the LED and which side is the phototransistor.)
If you are sure the optic pair is good, however, then follow through with the IC and the rest of the components.
If you can't just get replacement PCB's from Happ, and can't find suitable optic pairs or whatever IC is on there, then you could just strip the boards and hack some cheap mouse's optics onto them.
--- End quote ---
Thanks for the info, I'll take a look and see what I can find. If all else fails, I do have the original non-mouse boards I could use and just get an opti-wiz to interface it with the computer. I'd prefer not have to buy extra hardware, but I may not have a choice.
steveh:
stupid question. when you move the trackball... both of the encoder wheels move. and none of the spokes are broken off right?
divemaster127:
If your encoder wheels are fine you have a bad optic board I would also try it on another computer just to be sure
dm
AtomSmasher:
--- Quote from: divemaster127 on January 16, 2007, 09:55:46 am ---If your encoder wheels are fine you have a bad optic board I would also try it on another computer just to be sure
dm
--- End quote ---
The encoder wheels are fine, I even tried switching the places of the optic boards just to make sure. After looking at the board, theres nothing physically wrong with it that I can see, but I guess something odd just happened it. I haven't tried it on another computer yet, but I will later tonight.