Re: [CAD_CAM_EDM_DRO] pin identification

Hi Peter,

The DB connectors ARE non symmetrical! Tip: Use a felt marker to mark
pin 1's location. If you examine them closely, you'll see the pin
numbers molded into the insulators. Typically both sides.

Male and female connectors are mirror image to each other, as you might
have noticed. I don't try to remember WHERE pin 1 is. When wiring a
connector, I refer to my mark, and wire the connector. A LOT easier if
you are using removable pins! Get one wrong, just use the removal tool,
and re-install correctly.

I've mentioned earlier, you CAN solder wires into removable pins, not
quite as good a the gas-tight connections you can get from using the
proper crimp tool. Mariss made several good recommendations on the
process.

Again, JUST read the pin numbers! If the connector doesn't have any,
it's probably TOO CHEAP, and you don't want to use it anyway!

HTH

Alan KM6VV

cncnut@... wrote:

>
> Hi All,
>
> Why, oh why don't they make the DB25 non-symmetrical so that it is
> impossible to get the pins mixed-up?
>
> Don't know if this is a simple straight-forward matter not deserving
> of much attention, or whether it is a common difficulty for newbies
> just dipping their toes into computer and motor driver connectors and
> therefore deserving some elaboration for relative newcomers. BUT IS
> THERE A FOOL-PROOFED METHOD OF IDENTIFYING THE PINS ON A DB25
> CONNECTOR?
> <SNIP>
>
> Is there anything wrong with the above description? If the above is
> wrong, hope someone will quickly point it out.
>
> Peter