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Breaktru Forum  |  eCigarette Forum  |  Modding  |  Topic: DualParaMos-555PWM v1.0 pcb
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Author Topic: DualParaMos-555PWM v1.0 pcb  (Read 31209 times)

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Offline CraigHB

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #50 on: April 27, 2015, 05:08:11 PM »
I use assembly a lot also.  I've learned C and have used it, but the only time I program is when doing electronics projects with MCUs.  Every time I go to use C I have to learn it all over again.  With assembly all you need is the MCU's instruction set and you're ready to go.  Problem with assembly is it's not very efficient in terms of writing code, takes a lot of lines to do anything.  C is good because it's compact and efficient, but it's pretty cryptic IMO and definitely something that doesn't stick in your memory.

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #51 on: May 02, 2015, 08:53:40 PM »

Offline doobedoobedo

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #52 on: May 03, 2015, 04:03:16 AM »
That's wonderfully neat David.

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #53 on: May 11, 2015, 07:59:36 PM »





Offline Visus

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #54 on: May 11, 2015, 09:25:37 PM »
That is clean David


Bravo


Offline kasodo

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #55 on: May 12, 2015, 11:52:12 AM »
Where can we order these new boards with fire button?? Very nice!

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #56 on: May 30, 2015, 06:38:57 PM »
Had to redesign the previous board. Working good so far.


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Re: DualParaMos-555PWM v1.0 pcb
« Reply #57 on: May 30, 2015, 09:50:06 PM »
Looking good david. Good job man

Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #58 on: June 28, 2015, 03:50:28 AM »
 I've been reading a lot about PWM mods after someone suggested this thread to me on ECF in regards to an alternative to the typical OKL/OKR/NAOS/MOSFET boxes. Though I'm a little confused after reading one of themodfathers threads where he says that his boards are essentially less powerful than a regular mosfet box. Is that the case with these and all PWM devices? I've ordered 3 of these and 3 of his boards and a bunch of 555 ICs but am still curious what to expect.

Offline CraigHB

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #59 on: July 01, 2015, 05:59:45 PM »
Probably because it's not possible to obtain 100% duty cycle with a 555 based PWM driver.  Well, it's possible, but you would need more electronics to do it making it easier to use an MCU instead of a timer.  If using an MCU to generate the PWM signal, it's possible to obtain 100% duty cycle.  Also as max current output is limited by the battery for a PWM regulator, you can get more power out of a converter since current is limited by the converter itself.  Kind of hard to put it simply other than to say converters conserve power directly where PWM regulators conserve power indirectly by way of RMS values.

Offline TheModfatherInc

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #60 on: July 01, 2015, 06:08:32 PM »
Craig said it well. At 50% you'll be more powerful than a parallel box but at 100% less than a series unreg. The draw for me is all the adjustment in between without worry of build restrictions beyond battery safety.

Offline CraigHB

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #61 on: July 02, 2015, 01:13:28 PM »
Yes PWM regulators are the most simple and efficient regulators.  The down side being they are not DC.  Generally not a problem for powering things like heaters and motors, but limited in applications.  Another thing they can't do is put out a voltage higher than the input.  However, only boost converters can do that and converters are most commonly used in a buck configuration to step down voltage same as PWM regulators.  Converters can buck and boost at the same time, but those are complicated regulators typically not available in modules with high power outputs.  Though high output ones are used in limited applications like the DC-DC LiPo chargers used for powered models.  e-Cig controller boards can be found with fairly high outputs using buck-boost, but those are still limited in output compared to the ones that only buck.

Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #62 on: July 25, 2015, 09:51:14 PM »
Thanks for the explanation! At the point of posting my last comment I had done about zero research on PWM in regards to box mods(I have quite a few raspberry pi and arduino projects) and took it as it being less powerful than a parallel mosfet box, I wasn't thinking series.

Yesterday my components came in and I got a few PWM PCBs populated as well as an OKL2-T/20 box put together and PWM is definitely ideal for me. An unregulated series box is a little bit too much for me, but with PWM - perrrfect!
For the price difference from an OKL2 board I'm surprised more DIY modders aren't using PWM yet.
« Last Edit: July 27, 2015, 12:05:51 PM by MonkeyTokes »

Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #63 on: July 27, 2015, 11:30:35 AM »
Ordered a set of the 1.4 version boards yesterday, and 2 sets of the parts (modified) to go on them. 
This will be my first PWM attempt.
OKR's, OKL, Mosfet unregulated and straight unregulated have been done, as well as Vamo style chips. Still have an evolv 30 watt in the box ready to go, but THIS project sounds more like what I want.

 :thumbsup:

Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #64 on: July 27, 2015, 12:10:41 PM »
PWM is by far my favorite sport of regulation mechanism for box mods now. Hell it even beats unregulated and my OKL2. Personally I found themodfathers themodfathers mini PWM board easiest to assemble and use with essentially the same effect and the completely populated board with a mosfet cost me under $2  freaked_out: well worth it!

Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #65 on: July 27, 2015, 04:02:53 PM »
PWM is by far my favorite sport of regulation mechanism for box mods now. Hell it even beats unregulated and my OKL2. Personally I found themodfathers themodfathers mini PWM board easiest to assemble and use with essentially the same effect and the completely populated board with a mosfet cost me under $2  freaked_out: well worth it!

Those look interesting, and I may possibly get a set later. Just not enough information for me at the moment. I'm the kind that likes to see a  full wiring diagram that I can print out and view as needed.  This DualParraMos is going to be bad enough without that.. LOL

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #66 on: July 31, 2015, 08:32:20 PM »

Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #67 on: July 31, 2015, 09:34:29 PM »
Those look interesting, and I may possibly get a set later. Just not enough information for me at the moment. I'm the kind that likes to see a  full wiring diagram that I can print out and view as needed.  This DualParraMos is going to be bad enough without that.. LOL

I hear ya! Here's a diagram I made for myself(a bit crude, I made it in my phone but it works). Its actually the same as a regular mosfet build except where you'd normally take power from the battery to the switch then the switch to the mosfet, you use the output of the board. Other than that you just have to solder one diode in each direction to the outside legs of the pot and connect them together to the "dio" hole. The muddle pot leg goes to "wiper" and pwr and gnd are self explanatory. For the price its pretty much unbeatable. Though I do like the all in one boards, I'm just not great with SMD components so soldering 3 SMD and the rest through hole for the same end result is good with me!

Sadly I got my first OKL chips in the same order as my PWM components and sadly, what would have been my favorite box a month ago gets essentially no use now :p

Oh well, someone else will enjoy it!
Good luck on your PWM adventures!

Offline dc99

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #68 on: July 31, 2015, 10:23:38 PM »
You've been busy David. Go ahead and send me one.

Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #69 on: August 15, 2015, 09:18:24 PM »
Received 3 each V1.4 boards. Did one up the other day and it seemed simple. Then I learned how bad my soldering job was when the thing smoked...   It's now a full 7.4 volt board instead of adjustable..

So now I've spent some money on a better soldering system,  Hot air!!  Will attempt another board after it comes in!

Oh, yea, love the pre-made board I got from you David! Works like a charm!!


Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #70 on: August 23, 2015, 01:20:46 PM »
Ok, I'm doing something wrong here. Three boards - ver 1.4, three sets of parts. None working.
1st board done using my old soldering iron. Yea, not the greatest. Got it all going, turned the board down, hit the switch and something fried. smoke came off the board.
2nd attempt. Got a new hot air system, low temp solder and off I went.  Wasn't paying attention to the temp of the hot air, used it at 300.. The board looked great when done though! Hooked up my tank for a test, fired it and flames flew from my atty.. Board never fired again. Think I over-cooked some of the chips with the heat so high. Maybe...
3rd attempt. Temp turned down to 200, double checked all the chips visually, checked to make sure what I could check, power in, switch continuity, and wiring to the 510 all are at what they should be and.. Nothing..

So, am I missing a critical step here? A secret code? Or do I just need to take another class for soldering life skills?  raged:

Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #71 on: August 23, 2015, 03:14:45 PM »
In my expierence when the board didnt fire, one I resoldered the 15k res. And she worked and the second was the diodes. I didn't realize they had any markings on them and just plopped them in. Check under a magnifying glass. Be sure that if the diode in a vertical position has its arrow pointing down that the horizontal one is pointing to the left, and the opposite if it is pointing up. That also worked for me when my board was uncontrollable(more than likely why your Atty shot flames, it was probably running at max voltage).

Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #72 on: August 23, 2015, 04:27:58 PM »
Oh snap, after actually looking at the picture I took I think what I was seeing as arrows or polarity indicators were actually the number 4 lol

So disregard what I said about the arrows, but still just pull one of the diodes off with tweezers and flip it around and solder it back on. Did the trick for me

Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #73 on: August 23, 2015, 05:36:52 PM »
Oh snap, after actually looking at the picture I took I think what I was seeing as arrows or polarity indicators were actually the number 4 lol

So disregard what I said about the arrows, but still just pull one of the diodes off with tweezers and flip it around and solder it back on. Did the trick for me

There are lines to indicate polarity.. So you were partially correct! On my 1st attempted board, I did have one of the diodes reversed, but my old soldering iron actually caused a circuit line to be lifted.  Dead board now   

On my 2nd and 3rd, my problem was I had the 555 turn the wrong way..  DOH!!!!   So, good news they both were brought to life!!  :)  Bad news, my 3rd board, I tried to take the on/off switch back off, forgot I still had it connected to the battery..  DOH!!  Dead board that auto fires now  LOL  :wallbash:

At least I do have 1 of the 3 working, know where my mistakes were and feel confident I can do the next batch without  problems.!! :thumbsup:

Already have my plans to make a few more of these in motion!!   

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #74 on: August 23, 2015, 06:42:37 PM »
The marking on the components can be hard for the naked eye to see at times. Make sure you have proper lighting and use a magnifier. For soldering, if doing it by hand I have the Hakko FX888D set to 640F using the stock chisel tip and use mg chemicals flux and kester solder. If using hot air station I have it set to 240-250C, use the second to smallest air nozzle, and use mg chemicals leaded solder paste.

Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #75 on: August 31, 2015, 08:15:06 PM »
Normally I'm not the type to put someone on blast but this kind of pissed me off, mostly because the profit he's trying to make with giving no credit where its due-
http://m.ebay.com/itm/201416562020

Im sure he will probably change it since he's since added the little bit about it not being his board, but before he gave credit to no one but himself and his excuse - "its not like every one knoes (sic) who david is" with that logic I can sell the iPhone as a monkeyPhone because I don't know who designed it -_- I hate people sometimes. Especially when they ruin the concept of open source for everyone.

Offline Visus

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #76 on: August 31, 2015, 11:35:48 PM »
Lol
Thats biznuss Monkey even though my processor is intel and my sound card is turtle beach and other components etc..

Ya that just plain buy sell do again

you dont give credit to the enclosure manufact or the resistors 555 etc etc.

He bought it he can do what he will free enterprise.. 

If he posted on the forums as being his mental origin mod then lets lynch em rfol but ya IMO David has no dog in that fight esp should something go wrong open source or not..

But David I think also got the 555 from someone else he was just kind enough to map route and publish for us..
There's quite a few making pcb's for the 555 mod..  Theres also a whole blog of guys on fb making them and selling them as their own not divulging creation person..  Check out Box modders on fb..


Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #77 on: September 01, 2015, 02:23:18 AM »
Ehh. If you truly feel that way I'd have to guess you probably don't make anything of value and give it away for free. Or perhaps im just a man of principles, who knows. However, if you look at a listing by anyone who knows how to sell something, you'll notice people do list the enclosure brand, mosfet brand/part number, chip manufacturer/model, etc because people want to know these things and they are what the box is based around. People know a hammond box is a hammond box, its visible on both parts of the enclosure, almost every 20A box is labled as a Raptor or OKL, brands that use DNA boards sell them as DNA mods and so on.

Think of it from the position of the person who put their time into that design. They aren't a paid worker from vishay or another company where they are compensated for their design, they do it out of good will to help the community. To capitalize on that and give no credit to who essentially did what he more than likely just can't is rude. Especially if you're trying to make $70 profit off it. Most people would be a bit discouraged from releasing their designs for free to the public when they could just keep the design to themselves, sell the boxes and make the $70 profit. I know I would and if you browse the forums you'll see that is the case with a ton of people who either design PCBs or 3D printed parts and previously used shapeways.

Not to mention no one has paid for the design, I'm pretty sure you're using it under some creative licensing, the board belongs to you, not the design. There is a difference. There is a reason I can't make t-shirts and sell them with someone's artwork that doesn't belong to me, even if I buy a copy of the artwork on amazon or the image is on google.

Once this kind of thing keeps happening, then you'll see the value in a simple knod to the well deserving people once you're stuck learning to use Eagle or back to stretching jumper wire from hole to hole when the next type of mod has no free PCBs available, haha

Offline Visus

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #78 on: September 01, 2015, 05:25:53 AM »
Do you know the genesis atomizer?
That was designed open source by Raidy he had a coop on all the parts needed to make the atomizer.  Along comes zen and he releases it and people buy it by the millions as his creation knowing nothing about Raidy.
Now that was an intellectual jack but Raidys was fine with it..   That guy postd to ebay with a pwm mod, he made the mod, warranties  (if any) the mod,  not David.  David basically just took steps out for many people its not very difficult to make this board,  its uber simplistic once you learn a cad program, heck on some programs the computer  almost maps it out for ya you only have to move around a few parts.

David is not the 555 circuit for ecig originator so I have no idea what your rant is about.  Yes it awesome that he shared with us this board but as I said there quite a few who make the board and share it,   you can buy their boards sell them do whatever you want with them.  If David wants to copyright/trademark his board he would/does watermark it.. 

I think its naive of you to think that because its free source someone cannot capitalize on it.. 

Craighb made the 510 connector that fatdaddy, varitube, everyone uses today;  do you see any mention of him anywhere?  He was more than happy to share design etc and help out fellow modders building for their self or selling the best product they can,  to help get people off smokies is the goal for many if you can turn a dollar out of it woot for you..

You can read about the 510 we use today birth right here on this forum. 

I do understand what your saying but it seems, 'to them the acknowledgement is not necessary'  we know who's who and can offer to tell people when they post about it or in public say ohh this mod is great, I do it all the time..  Mamu grew huge because of that word of mouth,  Break would have been absolutely monstrous in the ecig industry..  Many people  have used his/mamu  designs for profit,  the guy that did the oem evercool mod etc.  So many people gave for this industry many awesome designs.  You have no idea who actually made the very 1st ecig but I do.. :laughing2: :thumbsup:



Offline MonkeyTokes

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #79 on: September 01, 2015, 08:56:26 AM »
Oh goody, ecig trivia! Herbert Gilbert, 1963, made the first smokeless tobacco cigarette for his brother, cousin, friend, patient or someone close to him to get them off cigarettes :applaude:

Somehow I feel as though you've got a leg in this race... Like you're trying to justify your own actions. Though the thing you failed to mention in both cases is their willingness for their designs to be adapted and used. I guess now I should reference people who want to be mentioned? Such as baps, who much more recently than the 510 or geni tank was trying to decide how to go about posting his new 3D printed mod on shapeways to keep this exact thing from happening to what he put his time into. Or one of the other people who use what you call the 555 circuit for ecigs(really its just one of a few circuits based on the 555 timer, it's initial use had absolutely nothing to do with ecigs at all. Check out monostable 555 schematics for future trivia :p) TheModFather, who kindly asks in his post to at least give him credit for his boards and to leave his logo intact. Im sure we can go back and forth with people who made something with the intent of people freely capitalizing on it, and people who don't mind their work being sold with no personal gain to themselves however would appreciate the little respect needed to mention who did most of the work for you, you know, like a person with some decency. Keeping with your whole "he didn't make the " ecig 555 circuit"" thing, look at most any wiring diagram now. What do you notice? The designers name somewhere that you can't remove it? Or a constant watermark across the entire image. Now why would they do this? Rather than dancing around with silly semi relevant facts, I'd enjoy your perspective on this. Because how I see it, though Mamu, relayed, david4500, thunderhead, and so on, did not design how to wire the OKL or TO-220 mosfets(obviously because they didn't make them -_-) their work is the diagram itself, which clearly they don't want being saved and reposted as someone else's because they made it, they put their time into, even if only an hour or two. But what you're saying is the people who used to crop out the persons name on their diagrams and repost them with no credit to who actually made it did nothing morally wrong? Well clearly the people makong the diagrams now putting their names in an unremovable spot didnt think so. The fact that you do is a bit troubling and well, as you put, naive. As is most of your argument to be honest, and I would assume the same goes for your understanding of PCB design. I have to wonder where your circuit boards are located? Since they're so easy to make surely you've got a bunch under your belt that you don't mind me taking, populating and selling as my own. A link to your osh park profile would be nice, I'm always looking for new business ventures  :D


Realistically like I said I think this is just a matter of principle. I'm the kind of person who appreciates what people do and don't think anything is owed to me and am grateful for what a select few have done for the vape community and for that feel they deserve recognition when I'm biting off their design or completely using something they've sunk their time and skills into. You, clearly do not feel the same. I'm sure that's not our only difference. No harm in that!

Offline Visus

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #80 on: September 01, 2015, 10:12:44 AM »
Hold on there grasshopper..

I have not sold a single ecig,  have no time for that.

What has happened to me personally:


I owned a music studio for ten years and had music created in front of me as musicians get a vibe in the studio atmosphere and flow.

3 #1 hits stolen, published, and climbing the charts to number 1 a month to a few months after they were created in my studio.
One track I personally programmed the drums,  two producers had made that custom drumset that took them many days/months  to create so as soon as I heard it reproduced I knew it was my pattern and their drumsets that noone but us had at that time..

3 #1 hits in less than a few month stolen by proxy of bugs in my studio..

These were not open source lol

There's a huge difference, I know how it feels for intellectual property to be stolen, oh yes..

Later in many days  a free source music production site opens up called beatlab I loaded loads of custom sounds as did many other producers.. They were recorded sounds from nature, edits of samples, and really unique things that make sound.  Free source -- are they used in music today oh yes,  frequently.  I could list a slew of songs with my custom sounds in them but they were free open source and I smile every time I hear them..
Back when I started my studio many couldn't afford or work the gear that I had so I was way ahead of the game in digital music and sound.  I opted out of the industry to pursue other interests but still gave to it and have over 20 #1 hit that hail from musicians/artist out my studio,  one just announced he's running for president :laughing2:..

I give credit to all I can if I remember to,  I usually do not forget but thats me.. 

Its fair as can be,  its free source,  now say with me free source...

If a builder tells ya who  his internals are from then he may lose his biznuss to them IDK their mindstate but ya makes sense to me..

Like it or not its free and your free to not like the non disclosure because you know who's who.. 
David does have a board thats his creation, thats his fet boards those are his intellectual property for the most part noone else has e cig fet boards out there that I know of and those if you look have his watermark..

The guy selling on ebay says hey I have a pwm mod for sale do you want a pwm mod if so press buy.  Simple..
It looks like crap IMO,  his wire routing is unattractive lol..  Idk if david would want his name mentioned in that mod at all.  lol

Mentioning Bap -- Bap wanted to profit off his teeny tiny 2 18650 awesome mod, totally different scenario.  Evolv now gives you a print similar to his mod for free for the DNA200 just download the file send it to 3d printer sell it or use it for free no need to say hey this is Baps or who ever, you bought it, its yours.. They don't care if you sell many putting your name on it etc or just the one for yourself.. 

Naive about free source well maybe now your not  :laughing2:

I was bored and and posted on your rant basically because I always say who the creator of something is on these forums etc so we get traffic and posts going.  Do I care?  No;  but I do care to enlighten a person to who's who people like to know trivia as you said and look it up thus traffic and posters chatting, maybe building a mod..  I think I brought you here from ecf not sure but ya see how it works lol..
« Last Edit: September 01, 2015, 10:24:17 AM by Visus »

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #81 on: September 01, 2015, 08:10:33 PM »
Normally I'm not the type to put someone on blast but this kind of pissed me off, mostly because the profit he's trying to make with giving no credit where its due-
http://m.ebay.com/itm/201416562020

Im sure he will probably change it since he's since added the little bit about it not being his board, but before he gave credit to no one but himself and his excuse - "its not like every one knoes (sic) who david is" with that logic I can sell the iPhone as a monkeyPhone because I don't know who designed it -_- I hate people sometimes. Especially when they ruin the concept of open source for everyone.

No issues. I message with Frank on Facebook.
« Last Edit: September 01, 2015, 08:16:05 PM by david4500 »

Offline Visus

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #82 on: September 01, 2015, 09:28:06 PM »
No issues. I message with Frank on Facebook.

Tell em bad potato lol  Your mods to dang clean for a bad potato  :laughing2:

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #83 on: September 19, 2015, 03:22:05 AM »





Online Breaktru

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #84 on: September 19, 2015, 06:34:07 AM »
Excellent David  :rockin smiley: Very precisely laid out. Smart template too  :applaude:

Offline doobedoobedo

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #85 on: September 19, 2015, 07:40:55 AM »
Your boards (and mods) are always beautifully laid out.

It's easy to tell that a lot of thought goes in to them.

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #86 on: September 19, 2015, 01:39:09 PM »
Thats clean

Uber niiice neat modding there

If was in a shop sold in extreme vape section  :laughing2:   ;bow;

Those mosfets looks so pro.  Their packaging looks futurista modernista..


 :thumbsup:

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #87 on: September 19, 2015, 04:00:35 PM »
Thanks fellas

Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #88 on: October 13, 2015, 08:51:07 AM »
All the links for your boards seem to have been 404'd on OSH Park David!  :(

Offline david4500

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #89 on: October 15, 2015, 10:51:19 PM »
The projects I had on Oshpark are no longer shared. My apologies.

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #90 on: October 16, 2015, 07:53:35 PM »
The projects I had on Oshpark are no longer shared. My apologies.

 freaked_out:

Damn glad I still had some in my cart..    ;)

Offline noname_modder

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #91 on: February 12, 2016, 03:06:25 PM »
Are these still available anywhere?  I'd love to get one!  All the links are broken though.

Offline mrzax

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #92 on: March 17, 2016, 06:38:28 AM »
What about this project?

Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #93 on: July 15, 2016, 04:07:34 AM »
What about this project?

David does have another board out. The PWMPCB052916  https://oshpark.com/shared_projects/pBB3aSMX

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #94 on: July 15, 2016, 04:16:04 AM »
Since I still have a few of the 1.4  boards around, I decided to do something. Attached.

CMOS chip instead of the 555. Using a 3.7 lipo, a standard USB charging board, and too much wire ;)

It works. Don't think I'll try it again, unless the change I make next to it does better.  Just not enough power. Might be good for my wife who really likes 2.9 to 3.2 volts for her vapes, but really not good for doing a MTL hit that has a full feel to it.  LOL

I'll try a 7.4 battery in it this weekend, remove the USB charger and see how that goes.

Online Breaktru

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #95 on: July 15, 2016, 06:02:19 AM »
Thanks for sharing your build SDaddy.  :beer-toast:
At least your wife will be happy with it.

Offline DIYFancyLights

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #96 on: July 15, 2016, 08:23:33 AM »
Since I still have a few of the 1.4  boards around, I decided to do something. Attached.

CMOS chip instead of the 555. Using a 3.7 lipo, a standard USB charging board, and too much wire ;)

It works. Don't think I'll try it again, unless the change I make next to it does better.  Just not enough power. Might be good for my wife who really likes 2.9 to 3.2 volts for her vapes, but really not good for doing a MTL hit that has a full feel to it.  LOL

I'll try a 7.4 battery in it this weekend, remove the USB charger and see how that goes.
The choice of the MOSFET used can make a real difference but can also affect how well the PWM works with it. For vaping limiting to the mfg & footprint I actually prefer to use the PSMN0R* parts like the PSM0R9-25YLC since they have about 40% less resistance when on. Another trick you can use is adding a voltage booster to power the PWM ... which then drives the MOSFET Gate to a higher voltage and lower the resistance.

That particular design is really intended for use with 18650's and series builds, a few 10th's of a volt can make a big difference on how it works.

Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #97 on: July 15, 2016, 01:40:25 PM »
Thanks for sharing your build SDaddy.  :beer-toast:
At least your wife will be happy with it.

I'm just trying to stay out of trouble!!  It isn't working but the wife is happy... ;)

Offline SDaddy

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #98 on: July 15, 2016, 01:49:53 PM »
The choice of the MOSFET used can make a real difference but can also affect how well the PWM works with it. For vaping limiting to the mfg & footprint I actually prefer to use the PSMN0R* parts like the PSM0R9-25YLC since they have about 40% less resistance when on. Another trick you can use is adding a voltage booster to power the PWM ... which then drives the MOSFET Gate to a higher voltage and lower the resistance.

That particular design is really intended for use with 18650's and series builds, a few 10th's of a volt can make a big difference on how it works.

It was done more for the Sh!t5 and Giggles, because someone keeps saying something to the notion if you use a cmos, you'll be the only one and you need to take a picture of it... and to see if it would work.  It does  LOL
I can't retain "fresh" information much these days, and as I have turned to lipo batteries that will never be marked as a "tobacco product" (   Doh: ), gotta use what I got.

Offline DIYFancyLights

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Re: DualParaMos-555PWM v1.0 pcb
« Reply #99 on: July 15, 2016, 02:21:33 PM »
It was done more for the Sh!t5 and Giggles, because someone keeps saying something to the notion if you use a cmos, you'll be the only one and you need to take a picture of it... and to see if it would work.  It does  LOL
I can't retain "fresh" information much these days, and as I have turned to lipo batteries that will never be marked as a "tobacco product" (   Doh: ), gotta use what I got.
Actually, I had figured that from your earlier post ... was replying mostly to help educate anyone else that might be reading it.

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