I'm a complete newbie to electronics so need a lot of help
I dismantled a chinese made double din dvd player(one of those all in one units) and want to use the screen sliding out mechanism with my own touchscreen for a carputer.
The screen is moved by a 9v motor. It sensors its position using some sort of light sensors (diodes? see pic)
So what I want to do is:
1. There one button to control the screen.
2. If i press it for a short period of time the screen moved a bit out (i.e the motor rotates a small amount). I can repeat this till i get the screen to a position i like
3. If I hold down the same button for a longer period of time (lets say 3 seconds) the screen slides out to its fully open position. When its at this position the dvd drive get a signal to eject the disc
4. While in the position if i press the button again the screen moves back completely to its vertical (neutral) position.
5. Also if you insert a disc to the dvd drive the while fully open the same thing should happen i.e the screen should go back completely
heres a pic of the screen positions. Also a pic of the motor and the black (?diode sensors)
http://picasaweb.google.com/lh/photo/vGjsC-XO7PGNgyHyUdZkoA?feat=directlink
http://picasaweb.google.com/lh/photo/y6V0P9r4QKYulMn-xTIkeA?feat=directlink
http://picasaweb.google.com/lh/photo/Aum7zl2PaU4nLYLsWFRkTg?feat=directlink
The power will be from the car batter so 12v. The dvd drive is a usb drive with a eject button. i can solder directly to the eject button. Not sure how i'll detect when a cd is inserted - think theres a microswitch which is pressed when a disc is in.
I was thinking of doing this using relays (time delay relay, Polarity conversion cirtuit etc).
I just need to detect when the screen is fully out and fully in so i can stop the motor/ eject disc. Was thinking of using micro switched (The diode sensors or what ever they are is a bit too complicated.)
I was hoping someone can help me do up a circuit preferably using relays or if not some sort of IC.
Please help me!
I dismantled a chinese made double din dvd player(one of those all in one units) and want to use the screen sliding out mechanism with my own touchscreen for a carputer.
The screen is moved by a 9v motor. It sensors its position using some sort of light sensors (diodes? see pic)
So what I want to do is:
1. There one button to control the screen.
2. If i press it for a short period of time the screen moved a bit out (i.e the motor rotates a small amount). I can repeat this till i get the screen to a position i like
3. If I hold down the same button for a longer period of time (lets say 3 seconds) the screen slides out to its fully open position. When its at this position the dvd drive get a signal to eject the disc
4. While in the position if i press the button again the screen moves back completely to its vertical (neutral) position.
5. Also if you insert a disc to the dvd drive the while fully open the same thing should happen i.e the screen should go back completely
heres a pic of the screen positions. Also a pic of the motor and the black (?diode sensors)
http://picasaweb.google.com/lh/photo/vGjsC-XO7PGNgyHyUdZkoA?feat=directlink
http://picasaweb.google.com/lh/photo/y6V0P9r4QKYulMn-xTIkeA?feat=directlink
http://picasaweb.google.com/lh/photo/Aum7zl2PaU4nLYLsWFRkTg?feat=directlink
The power will be from the car batter so 12v. The dvd drive is a usb drive with a eject button. i can solder directly to the eject button. Not sure how i'll detect when a cd is inserted - think theres a microswitch which is pressed when a disc is in.
I was thinking of doing this using relays (time delay relay, Polarity conversion cirtuit etc).
I just need to detect when the screen is fully out and fully in so i can stop the motor/ eject disc. Was thinking of using micro switched (The diode sensors or what ever they are is a bit too complicated.)
I was hoping someone can help me do up a circuit preferably using relays or if not some sort of IC.
Please help me!