Author Topic: Hello World (Read 38774 times)

bumba000 · « **Reply #75 on:** October 18, 2015, 07:09:14 am »

I don't want to add a thermistor. My point was that the heating element is for the most part a resistor. Mostly range from 0.2ohm to 1.5ohm. So in the feedback that I'll be sampling anyways I guess I could work in a bit of code that could detect a change in resistance. Since before letting the pwm button activate the coil I'll need to know the ohm load anyways, I can also then check in the return voltage for changes which would have to be due to a change in temperature... sounds easy enough. we'll have to see.

crispy_tofu · « **Reply #76 on:** October 18, 2015, 07:09:57 am »

Okay, fair enough.

bumba000 · « **Reply #77 on:** October 18, 2015, 07:11:33 am »

do you really eat tofu?

crispy_tofu · « **Reply #78 on:** October 18, 2015, 07:16:12 am »

Quote from: bumba000 on October 18, 2015, 07:11:33 am

do you really eat tofu?

Tofu is alright.

Simon · « **Reply #79 on:** October 18, 2015, 07:22:55 am »

I strongly suggest you read up on some theory, find a basic book or read some online articles, then we can talk to you on the same level.

bumba000 · « **Reply #80 on:** October 18, 2015, 07:53:29 am »

Simon, we were all just chatting seemingly without issue. What are you referring to?

Simon · « **Reply #81 on:** October 18, 2015, 07:55:57 am »

you are trying to make things with very little knowledge. If you want to be in a position to design stuff by yourself you need some theory. The more you know the more we can help you.

bumba000 · « **Reply #82 on:** October 18, 2015, 08:02:13 am »

I am trying to learn. Normally I research a bit and ask questions, research a bit and ask questions. Sorry that I can not afford to go to shcool. Here in the U.S. it's pretty costly and I don't have costly in the bank. Nor do I need a degree. I am truly sorry if my way of learning which is comfortable for me and affordable for me offends you or pisses you off. If you own this forum I will leave. If you do not own this forum and you're bothered by me then please just disregard any future posts that I make.

Simon · « **Reply #83 on:** October 18, 2015, 08:10:50 am »

Quote from: bumba000 on October 18, 2015, 08:02:13 am

I am trying to learn. Normally I research a bit and ask questions, research a bit and ask questions. Sorry that I can not afford to go to shcool. Here in the U.S. it's pretty costly and I don't have costly in the bank. Nor do I need a degree. I am truly sorry if my way of learning which is comfortable for me and affordable for me offends you or pisses you off. If you own this forum I will leave. If you do not own this forum and you're bothered by me then please just disregard any future posts that I make.

No need to get upset. I don't have any qualifications either and learnt by myself. No no one needs a degree, plenty of us don't have those but sometimes people are eager to get stuff done and put the cart in front of the horse a bit.

Your way of learning so far sounds like blowing stuff up and then finding out why, surely there is a cheaper way than that

.

But suit yourself, no I don't own the forum and you don't need to leave just because we have a difference of opinion. I'm just the moderaor and make sure that people get along, and having different views is fine.

bumba000 · « **Reply #84 on:** October 18, 2015, 08:26:05 am »

Simon, Thank you. I appreciate the help. I guess it just seems as though many folks (starting weeks ago in the IRC) wan't me to be an expert before they'll give any help or guidance. If I were an expert I wouldn't need help. I need help so I don't blow up. Fortunately I haven't hurt myself or burned my house down yet. At this point I've a few small and one slightly larger projects done. I've come this far in just a few weeks and I feel pretty good about it.

Funny thing is that what really got me interested in all of this was quitting smoking, started vaping and decided to make my own. Got into arduino, programmed one up, realized I needed more power and found Dave on youtube. First video was regarding opamps. wow, blew my mind. Enough so that I just had to get into this. It's just been crazy that 1/2 of my questions seem to be answered by someone telling me to learn. WTF?! that's what I'm trying to do.

Love you guys!! Thanks for the help you've given. I hope we can put this behind us. I've a lot more learning to do and thus a lot more questions will need to be answered.

John

rdl · « **Reply #85 on:** October 18, 2015, 08:29:04 am »

Advanced education has never been cheaper than it is now since so many colleges and universities offer free online classes.

tec5c · « **Reply #86 on:** October 18, 2015, 08:29:47 am »

Quote from: Simon on October 18, 2015, 07:55:57 am

you are trying to make things with very little knowledge. If you want to be in a position to design stuff by yourself you need some theory. The more you know the more we can help you.

+1 over and over.

Quote from: bumba000 on October 18, 2015, 06:54:36 am

Quote from: tec5c on October 18, 2015, 06:41:38 am
How do you intend to handle the atomiser end of the e-cig?

Can you be a little more specific? I guess I don't understand what you're asking...

The atomiser is a crucial part of an e-cig.

I don't think you have the knowledge to undertake a project like this and it would be dangerous if you continued on with it without having a fundamental knowledge of 1.) pre EE circuit theory, 2.) knowing what are the basic parts to an e-cig.

Quite frankly, I'm getting tired of seeing posts by noobs asking about things that they could have used a textbook/website/google/search button on this forum instead of jumping straight into making a new thread to be spoon fed the answer they're looking for... let alone claiming they smoke crack.

Quote from: bumba000 on October 18, 2015, 08:26:05 am

It's just been crazy that 1/2 of my questions seem to be answered by someone telling me to learn. WTF?! that's what I'm trying to do.

You're asking to be spoon fed in order to make your "own" product.

bumba000 · « **Reply #87 on:** October 18, 2015, 08:32:54 am »

Dude, I'm vaping from it right now. Spoon fed? Dude you're the worst of them all. Thanks for chiming in.

crispy_tofu · « **Reply #88 on:** October 18, 2015, 08:34:49 am »

Quote from: tec5c on October 18, 2015, 08:29:47 am

You're asking to be spoon fed in order to make your "own" product.

It's a learning experience.

Simon · « **Reply #89 on:** October 18, 2015, 08:38:46 am »

Quote from: bumba000 on October 18, 2015, 08:26:05 am

Funny thing is that what really got me interested in all of this was quitting smoking, started vaping and decided to make my own. Got into arduino, programmed one up, realized I needed more power and found Dave on youtube. First video was regarding opamps. wow, blew my mind. Enough so that I just had to get into this. It's just been crazy that 1/2 of my questions seem to be answered by someone telling me to learn. WTF?! that's what I'm trying to do.

Yes i once gave away an old PC PSU to a guy that was doing E-Smoking. I don't think your reason for entering electronics is unique.

forums are great for thrashing out ideas and talking about different ways of doing things and perhaps getting insight on one specific problem. but you need enough knowledge to have that discussion, if every time we give you a pointer in another direction you need to start again it means you might need a bit more foundation. I don't know anything about E-smoking (other than the unintentional silicone kind

) but people that seem to are concerned that you may be on the road to doing yourself an injury.

Wikipedia is actually a decent online resource and if you look up a component on it you will find tons of information about it. A lot of it probably too deep and unneccesary but it will give you a good grounding. We can go into deep theory of every aspect of your projects or each thread will turn into a book.

If you have a question about a specific part of theory we can easily expand on that and help explain it.

alsetalokin4017 · « **Reply #90 on:** October 18, 2015, 09:03:41 am »

OK... I'll go way out on a limb here again and link to this video I made a few years ago while trying to explain some things to a... er.... rather "different" user group. It's part of my "Mosfets.... How DO they work?" series. Sorry about the poor video quality, I've since gone to a slightly better transcoder than I was using then.

crispy_tofu · « **Reply #91 on:** October 18, 2015, 09:06:20 am »

Quote from: alsetalokin4017 on October 18, 2015, 09:03:41 am

OK... I'll go way out on a limb here again and link to this video I made a few years ago while trying to explain some things to a... er.... rather "different" user group. It's part of my "Mosfets.... How DO they work?" series. Sorry about the poor video quality, I've since gone to a slightly better transcoder than I was using then.

Subscribed to your channel, thanks!

Afrotechmods also posted a video on MOSFETs and Transistors in general:

alsetalokin4017 · « **Reply #92 on:** October 18, 2015, 09:34:07 am »

Thanks for subscribing! You will probably find a lot of it dull and boring but I hope you enjoy it anyhow. EEVblog, it ain't! (I dig afrotechmod's videos too... he's pitching to a slightly more sophisticate audience than most of mine....

)

If the circuit for that video above isn't perfectly clear to anyone, I just drew it out, attached below.

The idea could be adapted to the Arduino Ecig problem by polling the Vdrop across an NTC with an analogRead statement and adjusting the PWM duty cycle accordingly, and the scaling and whether the feedback loop is positive or negative can be done very simply in the software.

Simon · « **Reply #93 on:** October 18, 2015, 10:05:13 am »

the easiest way of knowing what the temperature is based on the heating elements resistance is to measure the current going into the element with a series resistor. You can use the Arduino's 1.1 V reference for the ADC channels so that you get maximum resolution and minimum loss and then knowing the average voltage you are putting across the element because you know the PWM duty you are supplying you can deduce the elements resistance from the current going in. This is the easiest thing from a circuit point of view for John and the rest is in software. Naturally signal from the series resistor needs low pass filtering or else it could pick up the full current from an on state of the PWM or no current from an off state during the PWM.

All if the sampling frequency of the ADC is fast enough and the PWM cycle on the high side lasts long enough the ADC reading can be taken from when the PWM cycle goes high but my guess is you don't have that sort of control in the Arduino. It's something you could do in theory in C in the at melt development environment where you have direct access to all the registers.

tec5c · « **Reply #94 on:** October 18, 2015, 10:15:58 am »

Quote from: bumba000 on October 18, 2015, 08:32:54 am

Dude, I'm vaping from it right now. Spoon fed? Dude you're the worst of them all. Thanks for chiming in.

Without knowing what an atomiser is... lel.

The product has been "made"

+1 to close this thread.

crispy_tofu · « **Reply #95 on:** October 18, 2015, 10:26:38 am »

Quote from: tec5c on October 18, 2015, 10:15:58 am

Quote from: bumba000 on October 18, 2015, 08:32:54 am
Dude, I'm vaping from it right now. Spoon fed? Dude you're the worst of them all. Thanks for chiming in.

Without knowing what an atomiser is... lel.

The product has been "made"

+1 to close this thread.

Whoa there friend, you might need to slow it down.

Simon · « **Reply #96 on:** October 18, 2015, 10:28:45 am »

I can't see why we need to close the thread.

tec5c · « **Reply #97 on:** October 18, 2015, 10:51:59 am »

I just find it frustrating that threads from people who are asking legitimate questions where the online information is scarce, sometimes get left with zero or very few replies yet this guy clearly has no clue about electronics, signs up and says he smokes crack, yet the thread carries on for pages and pages with people spoon feeding the guy.

Simon · « **Reply #98 on:** October 18, 2015, 10:54:58 am »

Well I'm afraid you can't tell people what threads to reply or not to and I'm only here to ensure everyone plays fair not to evaluate how well people do at replying to questions.

tec5c · « **Reply #99 on:** October 18, 2015, 11:01:01 am »

Don't get me wrong, I completely understand. Just venting a little frustration I have with the forum.


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Author Topic: Hello World (Read 38774 times)

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