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--- user:zimmer62:autodvdloaderrobot:start [2013/09/21 15:37]
zimmer62
+++ user:zimmer62:autodvdloaderrobot:start [2017/04/05 00:38] (current)
@@ Line 7: / Line 7: @@
 Drivers for newer operating systems are not there, and the software this works with is really only designed to copy a bunch of the same disc over and over.  A band interesting in burning their own discs might like this.
+The first step was to remove all of the housing and electronics, and identify what things I can use and what each part is.
+{{:user:zimmer62:autodvdloaderrobot:img_6752.jpg?direct&800|}}
+{{:user:zimmer62:autodvdloaderrobot:img_6762.jpg?direct&800|}}
+----
+I documented what I could figure out from each connecting wire:
+  * Bad Disk Full (Orange, Yellow, Green, Blue) [[https://www.sparkfun.com/datasheets/Sensors/QRB1114.pdf|QRB1114]]
+  * Bin Full (Red, Orange, Yellow, Green) [[https://www.sparkfun.com/datasheets/Sensors/QRB1114.pdf|QRB1114]]
+    * Pin 1 = Red = Emitter Anode
+    * Pin 2 = Orange = Emitter Cathode
+    * Pin 3 = Yellow = Sensor Emitter
+    * Pin 4 = Green = Sensor Collector
+  * Drive Door (Blue, Black, Purple, Yellow) [[https://www.sparkfun.com/datasheets/Sensors/QRB1114.pdf|QRB1114]]
+  * Home Sensor (Red, Orange, Yellow) [[http://www.sharpsma.com/webfm_send/637|Sharp GP1A75E3J00F]] (Yellow = E)
+  * Disk Present (Red, Black, Blue) [[http://www.sharpsma.com/webfm_send/637|Sharp GP1A75E3J00F]] (Blue = E)
+  * Safety Int (Black, Read, Green) [[http://www.sharpsma.com/webfm_send/637|Sharp GP1A75E3J00F]] (Green = E)
+  * JP13 Greyish White Wires go to the Disc Release Solenoid.
+  * Stepper Motor [[http://jnker.com/equipment/step_pdf/Seriya-GD42STH_1.8.pdf|FL42STH47-1206AC]] (1.8 degrees 1.2A)
+     * Rated Voltage = 4V
+     * Current / Phase = 1.2A
+     * Resistance / Phase 3.3Ω
+     * Inductance / Phase 2.8mH
+     * Holding Torque = 3.17Kg-cm
+     * Rotor Inertia = 68g-cm^2
+     * Detent Torque = 200g-cm
+  * Power Supply 12V @ 2.5A
+{{:user:zimmer62:autodvdloaderrobot:motor-windings.jpg?direct&200|}}
+This should be enough information to get going.
+I don't need the safety interrupt, so that leaves me with 5 sensors, 1 stepper and 1 solenoid that I need to interface with.
+----
+{{:user:zimmer62:autodvdloaderrobot:img_6756.jpg?direct&800| }}
+----
+That still left me with trying to identify that Sharp optical sensor since there are 2 of them I will need.
+I can see that the blue wire here is the Emitter, I'd really like to find the specs on this to make sure I drive it correctly.
+My search let me [[http://memakingthings.blogspot.com/2012/12/optical-interrupters.html|here]], not identical, but very close.  The 361 chip on my board is a current limiting resistor.
+A little experimenting with the lid sensor that I'm not going to need should help me figure out how to interface with this.
+Ohhh I found it [[http://www.digikey.com/product-detail/en/GP1A75E3J00F/425-2565-ND/857214|@ DigiKey 425-2565-ND]]
+[[http://www.sharpsma.com/webfm_send/637|Sharp GP1A75E3J00F]] I'm still not sure from this how to identify the other two leads.
+I had a heck of a time getting the .net gadgeteer board and the L6470 stepper controller to talk to any stepper motor.
+I was finally able to get this turning a stepper motor over the weekend.  It seems it's very sensitive to it's register settings.
+I had to use some software and a stepper motor datasheet to get some values to feed into their software.
+According to this:
+https://www.ghielectronics.com/community/forum/topic?id=8081&page=2
+Those values only get you close and you need to use an o-scope to tune it further.
+TODO:
+  * Hookup and test stepper motor to L6470 module
+  * Verify resistors and voltage coming into micro-controller.
+  * Write some rough code to exercise the machine using the optical sensors to prevent damage
+    * A loop that grabs CD's from source stack, drops them every other into the bins until bins are full.
+  * Write code to interface machine to PC to take simple commands and report back
+  * Write code on PC side to control machine and rip discs
+/30/2013
+Andrew and I learned how to interface with the Disc Presence sensor.  It was very easy
+  * Blue Wire to Ground
+  * Red Wire to 5V
+  * Black Wire to Pin 3 (interrupt pin)
+<code csharp>
+        public bool IsDiscPresent { get { return !diskPresenceSensor.Read(); } }
+        private Gadgeteer.Interfaces.InterruptInput diskPresenceSensor;
+        private void SetupDiscPresenceSensor()
+        {
+            char_Display.PrintString("DiscSensorSetup");
+            diskPresenceSensor = breadBoard_X1.SetupInterruptInput(GT.Socket.Pin.Three, GT.Interfaces.GlitchFilterMode.On, GT.Interfaces.ResistorMode.PullUp, GT.Interfaces.InterruptMode.RisingAndFallingEdge);
+            diskPresenceSensor.Interrupt += diskPresenceSensor_Interrupt;
+            diskPresenceSensor.Read();
+        }
+        void diskPresenceSensor_Interrupt(GT.Interfaces.InterruptInput sender, bool value)
+        {
+            char_Display.Clear();
+            char_Display.PrintString(IsDiscPresent.ToString());
+        }
+</code>
+I wrote down the documentation on how we hooked up the other sensor.  We still need to verify the input voltages.  I'm pretty sure this board expects 3 volt inputs, not 5 to prevent damage.