From: Gideon Zweijtzer (gideonz_at_dds.nl)
Date: 2005-08-13 11:46:16
Hi Antitrack, Using a reed-contact seems to me like a very unreliable and inaccurate way of doing such a thing. I don't think a reed-contact is ever meant to be used for the generation of timing pulses. Why don't you use a hall-sensor instead? They come in very small casings (a lot smaller than reed-contacts), and because they do not have any moving parts, they're faster and more accurate, too. You might need a resistor or two to apply the right bias, but it will pay off. Gideon > -----Original Message----- > From: firstname.lastname@example.org > [mailto:email@example.com] On Behalf Of > Antitrack@networld.at > Sent: Friday, August 12, 2005 22:38 > To: firstname.lastname@example.org > Subject: Please help with Catweasel Reed-Contact > > > > Howdy Hackers :-) > > I need a bit of help with reading the second diskside of > 1541-disks in Catweasel > drives. > You probably remember that you have to mount a magnet and a > reed-switch to the > PC drive in order to replace the light resistor/index hole stuff. > However, I've got some bad experience with several reed > contacts - it seems they > sometimes miss the magnet and thus don't do the pulses > properly. If someone got it "properly" please grab your > oscilloscope and tell me how the > normal light diode/resistor pulses ought to be like in timing > and duration (i.e. > length of pulse). And please recommend me a reed-switch that > is reliable - I > have tried several, none of them being reliable enough to > generate the pulses. > > If you know any other method of replacing the indexhole/LED > stuff on the PC > drive, please let me know. > > Another question - I guess some of you have the IDE64, which > now can use CF > Flash cards instead of IDE drives. Great stuff. I think it > would be cool to make > an 8 sec GCR copy that copies a whole 1541 disk image to > IDE64 - is there such a > tool already? If not I'll do it (but first I need to know > where to buy a IDE64 > and how much it costs). > > Yours > ATT > > > > -------------------------------------- > Ein Service von http://www.networld.at > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing list
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