3guk Posted July 18, 2005 Share Posted July 18, 2005 Ive talked about turning a cd player into a projector shutter in the past I cant remember who it was who gave me the idea. Just bought a cheapie pc CD rom drive off ebay and when I get it am going to convert it !! Hehe Is there a CD rom drive pinout anywhere so I know which pins to short !! Obviously connect it up to a 12v supply and its 2 of the 50 odd pins. Has anyone done this before ??! Whats the best way to go about it ?? Regards Link to comment Share on other sites More sharing options...
Andrew C Posted July 18, 2005 Share Posted July 18, 2005 Tried searching for cd-rom? Doesn't refer to a pin on the 50 way, I suspect you need to parallel the push-button. Link to comment Share on other sites More sharing options...
nickb12345 Posted July 18, 2005 Share Posted July 18, 2005 IIRC there is no eject control via the IDE cable, because IDE was invented for hard drives, which dont need eject! The best way is to remove the front panel and de-solder the eject button and stick it on a length of wire! Nick Link to comment Share on other sites More sharing options...
patesgeoffrey Posted July 18, 2005 Share Posted July 18, 2005 But there must be some secondary way for the drive to be opened, otherwise the computer couldnt do it. So either the IDE cable CAN do it, or there is another connection that you may have to short/apply a voltage to. Geoff Link to comment Share on other sites More sharing options...
Andrew C Posted July 18, 2005 Share Posted July 18, 2005 It could issue a logic instruction to the drive, no need for a discrete wire. Link to comment Share on other sites More sharing options...
3guk Posted July 19, 2005 Author Share Posted July 19, 2005 Surely the HD doesnt use all 50 pins, and neither would the CD rom drive im sure there must be two pins I can short to get it to open. Just dont want to waste a cd rom drive. Failing that ill just de solder the button !! Link to comment Share on other sites More sharing options...
James Posted July 19, 2005 Share Posted July 19, 2005 Surely the HD doesnt use all 50 pins, and neither would the CD rom drive im sure there must be two pins I can short to get it to open. Just dont want to waste a cd rom drive. Failing that ill just de solder the button !!<{POST_SNAPBACK}> 1 Reset IDE 2 Ground 3 Host Data 7 4 Host Data 8 5 Host Data 6 6 Host Data 9 7 Host Data 5 8 Host Data 10 9 Host Data 4 10 Host Data 11 11 Host Data 3 12 Host Data 12 13 Host Data 2 14 Host Data 13 15 Host Data 1 16 Host Data 14 17 Host Data 0 18 Host Data 15 19 Ground 20 Key 21 DDRQ 22 Ground 23 I/O Write 24 Ground 25 I/O Read 26 Ground 27 IOC HRDY 28 Cable select pull-up 29 DDACK 30 Ground 31 IRQ 32 No Connect 33 Addr 1 34 GPIO_DMA66_Detect 35 Addr 0 36 Addr 2 37 Chip Select 1P (1S) 38 Chip Select 3P (3S) 39 Activity 40 Ground Link to comment Share on other sites More sharing options...
sticks Posted July 19, 2005 Share Posted July 19, 2005 if you go for resoldering the eject button then connect it to the mini jack headphone socket on the front of the cd rom drive, you can then make a removable control switch with a mini jack plug on one end, less likely to get snapped off in the van! Link to comment Share on other sites More sharing options...
3guk Posted July 20, 2005 Author Share Posted July 20, 2005 So James There is no way of opening it with the ide connections without having a pc ?? Regards Link to comment Share on other sites More sharing options...
david.elsbury Posted July 20, 2005 Share Posted July 20, 2005 So James There is no way of opening it with the ide connections without having a pc ?? Regards<{POST_SNAPBACK}>By the looks of it, no. Sticks' solution sounds like a good one- change the 3.5mm headphone jack to be a remote trigger for the eject button. Just paralell the wires across the switch- it should be a momentary, normally open switch. That way the drive can function almost as intended (well, who actually plugs headphones into the front nowdays anyways ) or just pickup a cheapo cdrom drive. David Link to comment Share on other sites More sharing options...
3guk Posted July 20, 2005 Author Share Posted July 20, 2005 I finished it, I can post some pictures if you would like. Took out all the cicuitry leaving just the motor which is powered by 5v and using a phase reversing switch have got it to open and close !! It has an XLR out which provides the power and the switching !! Sprayed black and it clips on to the projector! Great !! Link to comment Share on other sites More sharing options...
SparkySteve Posted July 20, 2005 Share Posted July 20, 2005 quick question... have you tried leaving it open for ten mins or so? I'm asking as some cd drives have a timer which shuts them after 30/40 secs. Link to comment Share on other sites More sharing options...
computer Posted July 21, 2005 Share Posted July 21, 2005 If he took out all of the internal electronics and just used the motor and a switch then the timer would'nt still be a part of this setup... Link to comment Share on other sites More sharing options...
RumbleO Posted July 21, 2005 Share Posted July 21, 2005 I like this idea, but does the CD-ROM drive not get a bit hot in front of the projecter lamp? Link to comment Share on other sites More sharing options...
3guk Posted July 22, 2005 Author Share Posted July 22, 2005 Nope the cd rom drive runs fine and yes sinec the electonics have been ripped out there is no problem with a timer. Im also running a 5v motor underpowered at 3v and hence its a bit slower and more controlable !! Anyone want to see some pictures ?? Will quite happily post them ! Just a hole in the back of thre cd player so that I use send the power down an XLR line meaning that if needbe I can use the stage boxes back up to the booth. Meaning that I do not have to run in another cable !! Also made a bracket for it so that it clips over the back of the projector !! And voila an all in one projector shutter solution for aroudn £15 !! Link to comment Share on other sites More sharing options...
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