I haven't seen anything searching the forum on constructed mods with a microcontroller. Has anyone made one yet?
Mods with a microcontroller ?
- Thread starter Ralph Hilton
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Ralph,
What the microcontroller should be used for? Most of the e-cigs are based on Microchip's PIC12F615. This is one of the smallest ( simplest ) mcu. What do you think the PIC should do in the e-mods? It's easy to program such mcu for any e-cig ideas !
What the microcontroller should be used for? Most of the e-cigs are based on Microchip's PIC12F615. This is one of the smallest ( simplest ) mcu. What do you think the PIC should do in the e-mods? It's easy to program such mcu for any e-cig ideas !
Easy for a few of us that may know assembly language and have a pic programmer. I really cannot think of a good reason to put one in a e cig just more stuff to go wrong. I can program pic's and have the hardware to do it but just cannot think of a good reason to do so.
The first thing to do is make a PWM to vary the power to the att's for 6+ volt systems to prevent the burning sensation. Going to the next step after a resistor. Glad to see we know the chip, anyone reversed engineered the little magic rock that turns on/off the current? must be an Triac of some flavor, I'm going to bring out the wires on my Prodegy failed switch and after doing some amp/volt mesurments on a 510 under load going to put a big Triac in for the switch and see where it goes form there. Maybe something like a chopper, using the 5V voltage reg chips isn't working as well as thought.
I haven't used PICs myself. Can't they be programmed with a C compiler? That's what I do on my Atmel chips.
Yes there are C and even basic compilers for them...I may even have a old copy of pic basic around somewhere.
ya, and basic too, but the good ones just use assb, there mostly FIFO stacks with some nice instructions added in, PM'ed punkman to ask if he's knows something about PWM or was just a 'bit head', he just got here to ECF and now thinks we're nuts. if he knows how to assb into the PIC's (there just like the Atmel i think) he could help when i get down to replacing my 555 oscillator with something else.
I'll PM you with email address, must be late there, i just got back from Dubai.
is this it? :http://www.e-cigarette-forum.com/forum/modders-forum/23706-modders-printed-circuit-board.html
i wish mogur was still here....
i wish mogur was still here....
I should be there in a few days, going to have current/voltage curves tonight.
Are you using HV yet, see what I'm trying to do?
PWM is easy to implement on the Atmel chips I'm using. I can post more details on getting started with them if there is interest.
This in a nutshell is basically what you need for pwm
PWM Control of a Larger DC Motor Keith’s Electronics Blog
I have some of these mosfets laying around somewhere, pretty sure I sourced them from digikey.
PWM Control of a Larger DC Motor Keith’s Electronics Blog
I have some of these mosfets laying around somewhere, pretty sure I sourced them from digikey.
So do i, easy here in Houston. That's what I'm going to build.
So you are into CNC, since you have one you have the t-shirt on controling DC too, thanks
Its not a good choice of mosfet. An IRL2505 switches on at a lower voltage so there is no need for the transistor.
The PWM is the easiest part of the task. A table containing dependence between battery voltage and the PWM should be programmed in order to supply the heater with a constant current , as you couldn't measure the temperature directly . You should use the current/temperature graphs of the heater for implementing such a table. As there are many different heaters , there will be many I/t graphs or a PIC should be programmed for a particular heater.
I think the use of MOSFET is the only choice.
I think the use of MOSFET is the only choice.
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I have a pwm ic laying around somewhere also but that may be overkill if I remember correctly it was rather expensive also.
Speaking of Houston I want to move to the Houston area in the worst way, still trying to convince my wife. I live in Wisconsin the snow is really getting on my nerves, snowed a couple of inches friday night. That and I am a Linux and Oracle clustering expert, I need to get in a area that has a little more demand for high performance computing.
Speaking of Houston I want to move to the Houston area in the worst way, still trying to convince my wife. I live in Wisconsin the snow is really getting on my nerves, snowed a couple of inches friday night. That and I am a Linux and Oracle clustering expert, I need to get in a area that has a little more demand for high performance computing.
Should have known that, Triac's for AC like SCR's, got some here or down the street. From my background it's a wonder i didn't think of an IGBT.
I'll post here when i start a new thread with the power curves then come back here when i have curves under PWM control and it's time to think about automation to replace my 555 oscillator.
Thanks again, I'll post here tonight as i tear this failed Prodigy switch apart (not a loss, have a Chuck now) to bring the wires out for a test stand.
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