Wiring a LED button switch on a VW mod

[JohnnyDill]

I have a 12mm button switch with 4 leads- two for the switch and two for the LED light. How can I wire this so that it lights only when the button is pressed? -It is being put into a "Arlo" box mod with a Vamo PCB. {This is a variation of one of Mamu's designs.} The function of the switch is to fire the atomizer. It would be a nice touch if it lit when I pressed it!

 

[Visus]

Is if momentary led just wire it directly from battery with a resistor and ground.

If not a momentary led you would have to crack open the switch and make it into a momentary switch when button is pressed.

There is probably another way to do it with but thats what I would do.
.

 

[breaktru]

 

[JohnnyDill]

Is if momentary led just wire it directly from battery with a resistor and ground.

If not a momentary led you would have to crack open the switch and make it into a momentary switch when button is pressed.

There is probably another way to do it with but thats what I would do.
.

It is not a momentary LED. -It illuminates when current goes through regardless of switch position. That is what makes this confusing. If I wire it directly to battery, it stays on continuous. Do I need a transistor that senses current from the output to the atty to tell the light to turn on? A MOSFET perhaps? -I am not too adept with electronics! If so, can anyone recommend a transistor that would work with the 15W power of a Vamo?

 

[Vapant]

I used a PN2222A transistor with a 10k resistor as a switch and a 1/4watt 100ohm resistor for the LED (as it had a forward voltage of 2v and 50ma) You'll have to find out the specs of your LED to calculate the resistor.
It has been working great for over a year so far...

The 100ohm pot is set at 50ohm (I thought I might have wanted to change the brightness)

 

[JohnnyDill]

.....Now THAT is what I am talking about. Thanks SO much for the information. CHEERS!

 

[JohnnyDill]

YAY! I found both the transistor and the 10K resistor on ebay. I already have the correct 500 ohm resistor for the LED. Thanks again!

 

[Visus]

YAY! I found both the transistor and the 10K resistor on ebay. I already have the correct 500 ohm resistor for the LED. Thanks again!

Thanks for asking, I learned something -- love learning shiz I probably would have destroyed the switch before asking or kept trying and breaking more switches.

 

[Vapant]

You are more than welcome, it's nice being able to help

It's amazing what you learn with this vaping hobby/obsession.

 

[JohnnyDill]

this vaping hobby/obsession.

-....EXACTLY!!!

 

[JohnnyDill]

You are more than welcome, it's nice being able to help

It's amazing what you learn with this vaping hobby/obsession.

-I wired the LED switch as you described, with smashing results. Thanks again.

 

[Vapant]

Nice looking mod too
What is the bottom switch for? Is it a latching on/off or the original fire switch?

 

[JohnnyDill]

Nice looking mod too
What is the bottom switch for? Is it a latching on/off or the original fire switch?

-The black button on the bottom is for the function of the box's original purpose- it is a rechargeable "power bank" for charging cell phones and other devices. Here is the thread regarding this build for the DNA version: {mine is a one-off Vamo version}

Username Mamu is the creative genius that built this first. More pics of my build are included. http://www.e-cigarette-forum.com/forum/battery-mods/538730-arlo-dual-18650-dna20-30-step-step-how.html

 

[Vapant]

Oh yes, I'd forgotten about that thread.

 

[blueGrassTubb]

I need electro-...... speak for this.

I too am interested in this kind of setup, but can't quite figure it out in my head. I am using the SX350 chip. There is a pos/neg lead from the chip that goes to the pos/neg terminal on the switch.

From here I'm not sure what to connect and how besides running the neg wire from the chip to the negative terminal, and positive wire to the positive terminal. The drawings don't help much because I was never taught to read them.

Can someone explain in electro-...... speak or show how this is wired, I'd greatly appreciate it.

The diagram is shown thusly, but I have no idea what it means. The site also states "The switches LED is 2v and 50ma so to avoid blowing the LED use a resistor in series with the LED somewhere around 100ohms at 4.0-4.2v or 300ohms at 8.0-8.4v."

I'll admit that I have no clue what I'm doing with this, but, dammit, I'm determined to get an SX350 together!

 

[JohnnyDill]

I need electro-...... speak for this.

I too am interested in this kind of setup, but can't quite figure it out in my head. I am using the SX350 chip. There is a pos/neg lead from the chip that goes to the pos/neg terminal on the switch.

From here I'm not sure what to connect and how besides running the neg wire from the chip to the negative terminal, and positive wire to the positive terminal. The drawings don't help much because I was never taught to read them.

Can someone explain in electro-...... speak or show how this is wired, I'd greatly appreciate it.

The diagram is shown thusly, but I have no idea what it means. The site also states "The switches LED is 2v and 50ma so to avoid blowing the LED use a resistor in series with the LED somewhere around 100ohms at 4.0-4.2v or 300ohms at 8.0-8.4v."

I'll admit that I have no clue what I'm doing with this, but, dammit, I'm determined to get an SX350 together!

That switch needs to be wired exactly like the diagram on page 1 of this thread. Same as what I did. with a 3.7V batt, a 100 ohm resistor will work fine to limit the voltage to the LED. Works for me! -The "+" and "-" leads go to the LED light and the other two are for firing the atomizer. Hope this helps.

 

[Alizore]

-....EXACTLY!!!

Did you ever get the switch to work also do you have the link or modle number to the switch

 

[Alizore]

nvm jeese i guess i should read before i post. but..... that switch though, do you rember were you got it?

 

[DrBeaker]

I did a complete write up on how to wire up this switch for the sx-350 with close up pics in the suppliers forum. Its not hard you only need a 47 ohm resistor and a meter to find the ground of the switch leads on the sx-350. I guess I should have made a blog out of it.

I need electro-...... speak for this.

I too am interested in this kind of setup, but can't quite figure it out in my head. I am using the SX350 chip. There is a pos/neg lead from the chip that goes to the pos/neg terminal on the switch.

From here I'm not sure what to connect and how besides running the neg wire from the chip to the negative terminal, and positive wire to the positive terminal. The drawings don't help much because I was never taught to read them.

Can someone explain in electro-...... speak or show how this is wired, I'd greatly appreciate it.

The diagram is shown thusly, but I have no idea what it means. The site also states "The switches LED is 2v and 50ma so to avoid blowing the LED use a resistor in series with the LED somewhere around 100ohms at 4.0-4.2v or 300ohms at 8.0-8.4v."

I'll admit that I have no clue what I'm doing with this, but, dammit, I'm determined to get an SX350 together!

 

[JohnnyDill]

nvm jeese i guess i should read before i post. but..... that switch though, do you rember were you got it?

Switch Push Button 12mm Blue LED Momentary High Flush 4 Pin Boat Truck | eBay

The switch I used was like this one. I found one stateside. The button sits higher {my preference} and the spring pressure is light {my preference} Some like the button flush.

Hope this helps!