Can someone guide me through building one of these cables. I am not great with electronic schematics. Thanks.

 

I used the help of a friend who is electronic engineer. I bought the parts and materials and he built my ALDL cable in only 1 weekend. And now, I have a very nice ALDL cable with all parts in a right position on a green plastic card into a gray small plastic box.

Regards,

Denis V.

 

You don't need to be an electrical engineer or the help of one to build this cable.

Just imagine the lines on the diagram to be wires or any metal-to-metal contact.

Take the transistor for example. There's just one and it has three pins.



You can see in this diagram that the "base" pin connects to the squiggly line (it's a resistor). So solder that pin to a resistor (don't overheat the pins). Solder a wire to the other end. That's the wire that will plug into pin E on your ALDL. What I did is tin that end of the wire then squish it in a vise to make a flat part that plugs into the ALDL.

The collector pin goes straight to number 2 on the RS232 plug. They're all numbered right on the plug, but even if it's not for some freaky reason there's a diagram of that too.



Here's a pic of the thing, you can see it's not that complicated...

See that other resistor, the one marked R2? One end you stick to pin 4, and the other somewhere between the collector on the transistor and pin 2. What I did was stick that and the collector pin into pin 2 and glop a little solder onto the whole shebang (without getting any on anything else obviously).