The solenoids for both flipperfingers need to be connected to the flipperfinger buttons themselves, so it's neccessary to use a optocoupler for the PinControl 1, as the PC1 needs 5V (which it provides) for the inputs.
For details on how the PinControl 1 needs to be connected see the previous post or the manual at www.vpin-shop.de where it is sold. (which unfortunately is only available in german)
After googling for optocouplers i found this circuit by Zebulon:
 |
| Flipper Optocoupler Circuit by Zebulon |
Zeb told me, that his design is based on the optocoupler circuit by wolfsoft. Here's the link:
http://wolfsoft.de/wordpress/?p=655
Btw, take a look at zebs website, he's offering great circuit boards and he also has a great forum!
http://www.zebsboards.com/
The datasheet for the 4N35 can be found here:
In the circuit by Zebulon a 1k - 1k5 Ohm resistor is used. It depends on the voltage which one needs to be used.
As we're going to use 24V Siemens solenoids, and the input diode forward current is specified with a max of 60mA, the 1.5kOhm resistor would have a current of 16mA
U / R = I
24V / 1500 = 0,016A = 16mA
Meier1971 from www.flippermarkt.de forum, the inventor of PinControl1 was so nice and took a look at the circuit and confirmed that everything is okay with this circuit and that it's suitable for the PinControl1.
 |
| Electronic parts from www.conrad.at |
 |
| The circuit on a 100mm x 160mm stripboard |
 |
| How connect to the solenoid / PinControl 1. |
 |
| The circuit board cut to two small pieces. |
 |
| Finished board. |
 |
| Backside |
