After sitting on my dads workshop bench for a while he had a go at it and couldn't work out how to fix it so it was passed on to me as broken.
So I decided to hang the current circuit board and lets make this thing arduino compatible and while I am at it lets make it wireless :-)
In preparation for this I had to work out which wires were for the motors and which were for the internal batteries.
I am working with one of these: http://www.bhphotovideo.com/c/product/64399-REG/Bescor_MP101_MP_101_Motorized_Pan_Head.html
Step 1: Parts required
Things you'll need;
Two Teensy development boards :- http://pjrc.com/teensy/index.html
An H-Bridge to control the motors :- http://www.ebay.co.uk/itm/SN754410NE-x1-SN754410-754410-Motor-driver-Stepper-Arduino-ATMEGA-PIC-/251042473622?pt=UK_Mobile_Phones_Communication_Radio_Parts_Accessories&hash=item3a734c2696
433 mhz transmitter and receiver :- http://http://www.ebay.co.uk/itm/KDQ6-NEW-1PCS-433MHZ-RF-TRANSMITTER-AND-RECEIVER-LINK-KIT-FOR-ARDUINO-SCA-1710-/360670375378?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item53f9a12dd2
On Off switch
Step 2: Solder The H-Bridge
You can attach the power directly from the batteries to this allowing for you to power the teensy from the H-Bridge as well as powering the motors.
At this point you can add a switch to turn it on and off when you want.
I assigned the pins as follows
Pin 1, 8, 9, 16 power from the mount.
2,7 pan or tilt pwm respectively
15, 10 pan or tilt pwm respectively
3,6 motor 1
11, 14 motor 2
4, 5, 13, 12 ground