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General Mach Discussion / Re: Fried 2nd Computer (Newbie)
« on: June 09, 2008, 07:53:31 PM »
I have checked for the obvious over and over rewired as per the diagram. I am still using the 7812 voltage regulator. I have tried several different 7812 voltage regulators . I have one 7812 connected right off of the filter capacitor. Checked I have 12volts everytime fan works and 12 volt LED lights up. The Bob checks out fine as long as I do not connect it to the computer. I have the correct cables now from Probotix and a brand new Bob which I checked with volt meter before connecting to the computer. It was all great until I connected it to my computer. That is when the Ground wire got hot from 7812 to the onboard voltage regulator LM317 which supplies 5volts to the bob which is on the bob itself from Probotix. I have followed instructions from Probotix as to which jumpers to remove which is only jumper 5. I have checked the Bob over and over this time before connecting to the computer. I am thinking that I did some damage to the parralle port yesterday when I hooked up the Bob that had 5 volts on the ground shield. I had already powered the bob connected to the computer before I knew that the shield was actually a ground. Do you think that my paralle port is messed up now?
Thanks
Travis
Thanks
Travis