Quick Question: Can you help.

[cat]

Hey guys,

Ive got 13 of these 3pdt's that Im going to hook up for a true bypass strip project like this

How do I orientate the switches that I have. They have no logos at all and look like this:


I have read the FAQ. I just want confirmation of the correct orientation.

Thanks guys,

Cat

[BN]

If you've got a multimeter you can easily measure the pins to verify the orientation.

[cat]

If you've got a multimeter you can easily measure the pins to verify the orientation.

Oh?

How do you do that? Is it in the FAQ?

Cat

[Peter Snowberg]

If you look at the picture above, the switches have three rows of three contacts which are oriented vertically.

Grab your meter and one of the switches. Check for continuity between the middle pin on the left side and the top or bottom contact on the left side. One of those two pairs will show continuity. If you don't see any, rotate the switch 90 degrees and try again.

If you saw continuity between the middle and top contacts on the left side, push the switch and you should now see continuity between the middle and bottom contacts. When you see this, the switch will correspond to the diagram above.

[cat]

So by "continuity" you mean it will show a reading?

Thanks for helping Peter I really appreciate it,

Cat

[Peter Snowberg]

So by "continuity" you mean it will show a reading?

Yes. 

If you short the probes together while the meter is set to any ohms range, you will see a very low reading. It may not be zero, but it's close enough for Rock'n'Roll. That's the reading you're looking for.

You're welcome and best of luck. 

[cat]

Excellent. Thanks again Peter, as I said, I have 13 of these to hook up so I couldnt afford to do it wrong. 

Cat

[MartyMart]

You've got your resistors on the wrong "leg" of the LED's  !
They should have current limiting resistors between 9v + and the "+" leg ( longest )
otherwise you'll blow them all with direct 9v  ,, !

MM.

[Paul Perry (Frostwave)]

You've got your resistors on the wrong "leg" of the LED's  !
They should have current limiting resistors between 9v + and the "+" leg ( longest )
otherwise you'll blow them all with direct 9v  ,, !

No, it doesn't matter which side of the diode has the resistor. Just so long as they are in series. Carry on.

[cat]

You've got your resistors on the wrong "leg" of the LED's  !
They should have current limiting resistors between 9v + and the "+" leg ( longest )
otherwise you'll blow them all with direct 9v  ,, !

No, it doesn't matter which side of the diode has the resistor. Just so long as they are in series. Carry on.

Ah yes they are in series. I shouldve used the "LED SERIES resistor calculator to determine what resistors I need shouldnt I.

Cat

[MartyMart]

Sorry my bad ... yes series  !!!   carry on ....

MM

[Pushtone]

Most meters will have a Continuity setting where it emits a BEEP sound when the probes touch each other, either physically or through a conduit like a piece of wire or a switch. If you hear a beep you have continuity.


I like this webpage for tech info on switches. Checkout the project pages too!
http://www.beavisaudio.com/techpages/


Looking at the way you have wired you switches....
Its good that your grounding the input (send) when the switch is in bypass, but it looks like JD Sleeps's way of doing the same thing over a GGG uses one or two less solder points. Might be an issue since your doing 13 switches. Check out any of JD's layouts with a 3PDT switch to see if you can save some time there.


Something I've been doing when I have multiple destinations for 9V power and ground is to use perf board to make a separate power and ground distribution board. I weave some cut-off leads through the perf to make little loops or humps that I solder off-board wires to. I make two rows of solder points. One row is 9VDC and the other ground.

Like this


And This


Sometimes I mount the LEDs on there too!

[BN]

Oh?

How do you do that? Is it in the FAQ?

Cat
[/quote]

Sorry for not answering your question, I just wasn't fast enough... 
Hope you got it worked out.

/BN

[cat]

No probs BN, Ive got it sorted now.

Thanks,

Cat