SV: [APML]: building an electronic tracker

["Olle Eriksson" <olle.eriksson@norrkoping.mail.telia.com>]

I based my electronics on Stephen Tonkin's scheme at
http://www.aegis1.demon.co.uk/gallery/scotch.htm.

It was the easiest of everyone I have seen on the internet. There are also a
list of the components needed. When it comes to attaching the components to
a circuit board, I used the kind of circuit board where you simply push the
wires down into holes that are connected to eachother. Doing this, you can
easily remove them if you want, or change the look of the scheme. There are
pictures of this at http://www.jlc.net/~force5/barndoor.html.

About the wires:


Alan Cairncross wrote:
>Try these connections.
>                                    Pin Nbr          Lead Colour
>                                        6                  Yellow
>                                        8                  Orange
>                                        9                  Brown
>                                        11                Black
>                                     Connect both the Red And the
>Red/Orange leads to the + 12V supply.
>
>You will not damage the motor with a wrong connection.
>What happens is the motor will "dither". ie The motor rapidly
>flicks backwards and forwards. If this happens leave the Red
>and Red/Orange leads connected to the +12V supply and try
>swapping the Yellow and Brown leads around. When I first
>started fiddling around with steppers I used to solder the
>connections together. I quickly learnt to use terminal posts
>with screws and I advise this to any other experimenters.

Olle Eriksson