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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

2882.0. "Circuit Diagram for Disk Drive Wanted!" by BAHTAT::BOOTH () Thu Aug 31 1989 08:54

    Hi,
    
    Could anyone send me a circuit diagram of a Disk Drive.  Reading
    through the topics it seems that a few people have made their own
    disk drives, and i'd like to have a go!                      
    
    Many thanks,
    Rob.
    
    BAHTAT::BOOTH
                    
    Robin Booth @RKG 
    Newcastle Office (U.K.)
    
    
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2882.14 notes back...FRAMBO::BALZERChristian Balzer DTN:785-1029Thu Aug 31 1989 09:099
    
    Hi Robin,
    
    read 2878.0 on how to get the diagram of an floppy-interface.
    I don't think you want to build a drive by yourself, right? ;-)
    
    Regards,
    
    <CB>
2882.2Let me make a mess with a Soldering Iron!BAHTAT::BOOTHRob (B) 7831 3159Thu Aug 31 1989 10:0610
    Actually, I've had limited experience with PCB's and the like.
    After all, what's life without a challenge?  If someone could send
    me the Diagram I could see what i'm up against, and if it's too
    complicated, back off!  >:-)
    
    Thanks for the reply, maybe I will use that one!  It was a reply
    to a previous note of mine, anyway, I think!
    
    
    Rob.
2882.3disks have significant mechanical contentSAUTER::SAUTERJohn SauterThu Aug 31 1989 11:155
    Building a disk drive is more than just a printed circuit board.
    There is also the matter of the rotating surface, the flying
    head(s), and the actuator arm(s).  There's a lot more mechanical
    than electrical engineering in a disk drive.
        John Sauter
2882.4Confusion... ;-)FRAMBO::BALZERChristian Balzer DTN:785-1029Thu Aug 31 1989 11:4611
    
    Re: .3
    
    Uh John, I think that Robin's request was just a bit mis-worded
    and all he wants is an interface to connect a standard floppy to
    the Amiga. I think (hope? :-) he's aware of the severe problems
    of building a complete floppy disk drive, thus the smiley from me
    at this question to him. ;-) 
    Are you listening Robin?
    
    <CB>
2882.5They don't have faith in ya Rob!BAHTAT::STURROCKTimes tide will smother me...Thu Aug 31 1989 12:214
    Nope, I've had a word with him and he intends to build his own drive.
    He seems fairly confident too...for now.
    
    Bruce
2882.6Oh my gawd... ;-)FRAMBO::BALZERChristian Balzer DTN:785-1029Thu Aug 31 1989 12:331
    
2882.7I'll quadruple that one!WJG::GUINEAUIn the calm calculus of reasonThu Aug 31 1989 12:516
> Oh my gawd... ;-)

is right!  Unless he has some serious cash, some real expensive equipment,
lots of Electronics and Mechanics ability, clean rooms, ....  FORGET IT!

John
2882.8The Nerve shattered!BAHTAT::BOOTHRob (B) 7831 3159Thu Aug 31 1989 13:207
    O.K. O.K..... I take the unsubtle hint! HAHA >;-).  
    
    I have a friend who does have the resources to make the drive, but
    I don't think i'll bother! 
    
    Thanks anyway.
    Rob.
2882.9old ciriuit didn't work for meVIVIAN::S_GOLDSTEINSteve G...01-234-5935Thu Aug 31 1989 13:2414
    I tried one of the circuits from wayback (the one with 2 components
    74LS74 and 74LS38? ) and the best I got was the AMI sees DF1 as bad...
    
    I have now aquirred an old 1010 and it uses a LS74 and a 5xxx or other 
    So I don't know at the moment what is going on...
    
    When I get back from my Hol's I buzz the circuit through and find out
    exactly what is going on...
    
    
    		Speak to you all in approx 2 weeks...
    
    
    		Steve G
2882.10dead 5820VIVIAN::S_GOLDSTEINSteve G...01-234-5935Thu Aug 31 1989 13:287
    
    I forgot to mention I killed the 5820 I/O chip with the first attemp
    of the circuit..
    
    	It then took 3 weeks to get hold of a new one...
    
    		Steve G