Help! My First PT

[gsc4077]

I originally wanted to make this with an 18650. But then it occurred to me that I'm glued to my laptop 24/7, I didn't want to make a housing case for the battery, and the one thing I remember from electronics class is that I should stay far away from making anything . But I had to make something and I always wanted a 510 PT.

Made it out of a Coleman aluminum LED flashlight, momentary switch from radio shack, a connector from one of my Riva batteries and cut the cord from an old v4L PT. Also used some adhesive putty on the inside (the kind you knead and let set) to help hold the button (the original hole was pretty big) and cap on the top. I thought I had seen someone else use that stuff in a tutorial here, but I really don't know.

I capped it with the plastic top from the tube that held the putty and made the hole in that for the connector. Fit perfectly inside and I "finished" the top of that with the cover of a black v4L carrying case I ripped off.

I tried to play it safe not having to worry about batteries and resistors . . so if it sounds like I've done anything horribly wrong, please let me know.

 

[5cardstud]

I don't know how you have yours but mine has the positive wire going to the switch then from the switch to the atty connector. The negative wire just runs straight through to the atty connector. Push the button and you have vapor.

 

[gsc4077]

I don't know how you have yours but mine has the positive wire going to the switch then from the switch to the atty connector. The negative wire just runs straight through to the atty connector. Push the button and you have vapor.

Yeah that's what I did. Just seemed too easy, and that's usually a bad sign for me lol.

 

[stouchon]

Your switch can be on the positive or negative, it doesn't matter. You should put a 200 ohm resister between the green and white wires though. Doing that will put your computer into power pass mode and give you the full 1.5 amps from your usb port. If you don't you will get .5 amps.

 

[RedDeath5]

really? i don't have a resistor in mine, and i'm fairly certain i'm getting the full amps. my 1000mAh car plug doesn't put out even close to the same vapor.

 

[gsc4077]

I'm getting .71amps and 4.99v. What does getting the full 1.5amps change?

 

[Java_Az]

I'm getting .71amps and 4.99v. What does getting the full 1.5amps change?

If you have 4.99 volts and are getting .71 amps you would have to be running a 7.02 ohm atomizer. Didnt realize they made atomizers that high in ohms. What are you using to get your voltage & amp numbers?

 

[gsc4077]

more reasons for me to stay away from electronics. i took that reading from the pt without an atty. that's not right is it? lol

 

[Java_Az]

Yeah you need a loaded reading for the amps. But that brings up this question, under no load you shouldn't be getting that high of a amp reading. Should be reading zero really. Off hand from what you said your not measuring the amps correctly. To measure amps you have to have the meter set up to go from positive to positive. The load goes threw the meter. So you would have one end of meter on the battery or PT positive the other meter lead would go to the positive on the atomizer. Pretty hard to do without a special made adapter to do that because you need a ground to go straight threw also for it to work. Unless there is someplace in the mod you can pull the positive off and put the meter between the two positives. Really it is probably nothing to worry about unless your not happy with the vapor production. Best test is set the meter up for 200 ohms unplug the PT from the power source. With the atomizer off put one lead on the positive one on negitive the meter should read 200 or stay the same as it was not connected. That means there is no leakage or short. Next hit the power button the meter should go to zero or close to it. If that happens you have good solder connections. If your PT passes those two tests you have yourself a good one. Then the only place left to look is the power supply. For 5 volts a PC USB doesnt cut it you will get a voltage drop a 2.2 ohm atomizer @ 5 volts needs 2.27 amps to maintain 5 volts. If it can only get 1.5 amps your going to get a pretty good voltage drop.

 

[stouchon]

I have noticed better performance from 510 and 901 atomizers on pc usb power than the batteries they come with. I don't really like 5v either, I prefer 4.2 or so anyway.

 

[AttyPops]

I agree with both stouchon and Java_Az... 5 volts is sometimes a little too "hot" with the atties I'm using, and I don't mind a "toned down" more flavorful vape with a voltage drop. That said, Java's point about power supplies is a good one. Why not use a 2.0 amp (or so) "wall wart" and not stress your computer's USB ports?