555timer vape

[Zanderist]

I went for it with this mod, after finding a low power 555 timer (LMC555) I etched and built it up. The problems it faces is it doesn't give near 99% duty cycle. It also makes a high pitched noise, not sure on how that happens.
I went for the mod just because it seemed the best idea than having to program a bulky chip.


Benefit to this build is can vary the power to the coil. Can't say what percentage it goes down to but I do notice the difference. If you hook it to high power transmitter you can tap out Morse code with it.


It's vapor production on the low setting is like that of a tank set up on an ego. On the high setting it feels like an rda on 1.0 ohm build.


The goal was to improve on the existing mosfet build idea, while it does work ( keeping mind that your battery is near a full charge to enjoy the full benefit) it doesn't match vapor production of the plain mosfet box mod










I don't know what else to add so I'll just answer questions if any.




editIT'S NOT 120 VOLTS IN THE DRAWING ITS SUPPOSED TO BE OHMS)

 

[tehdarkaura]

I like the idea of using the 555 I used to build with those a lot back in the day.
it would cost a buck or two more -- but an atmega/arduino pro mini has native PWM that you can use the input of a ADC pin to control the duty ratio with. you just need a power transistor that supports the speed of switching chosen -- or you could use normal buttons to change the value digitally.
The noise you hear is because its alternating on/off slow enough to be in the audio range I would guess. Again using an mcu lets you control the switching frrequency and its way above anything audible.
Neat idea

 

[tehdarkaura]

New Pro Mini ATMEGA328 5V 16M Replace ATMEGA128 Arduino Compatible Nano F5 | eBay

I picked up a few more pro minis the other day -- the problem with these knock off ones is that they may or may not come with the arduino bootloader but I use them with a normal programer anyway and they work fine when you do that.

 

[Zanderist]

My issue though is I have to use all the pins on the chip to feel as if I'm not wasting a chip. Though with that said the memroy might not support a program with all the pins used.

What I could do how ever is use MSP 430 and engeria. I has a small enough foot print to fit inside this box mod.

 

[Zanderist]

I hate to bump this. But I can't find the edit button so I just want to add this video,

https://www.youtube.com/watch?v=9B58pmgQaJo

 

[tehdarkaura]

I hate to bump this. But I can't find the edit button so I just want to add this video,

https://www.youtube.com/watch?v=9B58pmgQaJo

lol -- keep an eye out for FCC white vans driving around your neighborhood trying to triangulate your mod

 

[grrmisfit]

https://oshpark.com/shared_projects/D9LvB9km + http://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=37fb58e693&hc_location=ufi . i can run anywhere from 2s to 4s 18650 or lipo

 

[rhelton]

You guys have seen this I am sure. I have been thinking about doing one of these.

Imgur