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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Conversions >> RE: New CDI - opensource project JMJ and Bigboat
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RE: New CDI - opensource project JMJ and Bigboat - 6/28/2009 10:03 AM   
boating around


 

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Status: offline 		A couple more questions concerning making an ignition coil and I should be done.

From what I read a ferrite core will work? Can be bought at Dick Smiths and can be found in am radios.

Supply is 6 volt, what voltage does transformer see? The diode will drop it 0.6 volt I think.

What voltage should ignition coil see? 200 volt?

What voltage should spark plug see? 20,000 volt?

If I can get an answer to these questions I can make better coil. I will be able to better determine winding ratios.

I will document the making of coil as I go and post results.

Here is link to making coil, may help.

http://members.misty.com/don/trigcoil.html

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RE: New CDI - opensource project JMJ and Bigboat - 6/28/2009 10:18 AM   
Bigboat


 

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quote:

ORIGINAL: boating around

A couple more questions concerning making an ignition coil and I should be done.

From what I read a ferrite core will work? Can be bought at Dick Smiths and can be found in am radios.

Supply is 6 volt, what voltage does transformer see? The diode will drop it 0.6 volt I think.


Correct.

quote:

What voltage should ignition coil see? 200 volt?


I hope between 300 and 600 Volts.

quote:

What voltage should spark plug see? 20,000 volt?


Depent wat kind ignitioncoil you are using.
Small enginges like weedeathers have a ignitionvoltage between 6,000 and 8,00 Volts.
Big enginges like cars have a ignitionvoltage between 10,000 and 20,000 Volts.
If the compression of the engine will be higher, the ignitionvoltage must also be higher.


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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 2:03 AM   
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Status: offline 		No go.

I've double, triple checked my work, can't see anything wrong. Tried the jumpers in all possible configerations.

I sometimes get a nice spark when power is applied to circuit, but thats it.

I suspect the schematic is correct but to be sure see the following mistakes, which is correct?

............. Parts list.................... shcematic
C5..........0.1uF..........................100n
C2..........100uF.........................47uF
C6..........100n...........................470n
C4..........470n...........................100n
C7.........100n............................0.1uF
R3..........1K..............................150 ohm

Should the LED strobe light up in test mode? It doesn't.

Thanks
Dave

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 9:52 AM   
boating around


 

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Status: offline 		Just going in circles now. Still nothing. Picprog4u sayes its programming with no errors. Pic is getting 5V. Programmed in and out of circuit. I have programmed many pics of various type and some avr, this is not new to me.

First line of program starts as follows:
0000 298B 3FFF 3FFF 3FFF 30EE 1303......does this look correct?

??????????

Can't see there is anything else I can do.

Dave

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 10:17 AM   
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Status: offline 		Would I be correct in saying the led strobe polarities as marked on component layout are wrong.

There are 3 pins, center pin marked as + goes to transistor. Two outside pins marked as - are on 5volt rail????

Led gets power from battery and transistor grounds it.

Dave

I have a cro

< Message edited by boating around -- 6/30/2009 10:20 AM >

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 10:47 AM   
jpanhalt


 

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Status: offline 		A year or so ago, I built the HV side only based on the schematic, and it worked. On the bench, I used a simple oscillator to trigger the device.

As for the parts list/schematic discrepancies, I could not find the parts list to which you refer. Note that 100n is the same as 0.1 uF, so at least C5 and C7 are should not be on that list.

The hex.zip file with the original post un-zips to give for the first line : 00008B29FF3FFF3FFF3FEE300313831286052E
I have no idea whether that is correct, as I was not interested in the MCU part.

Good luck,

John



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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 11:57 AM   
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Status: offline 		C5 and C7 do need to be on list as schematic shows polarised and parts list says non polarised????

First line of your hex differs slightly to mine, why??? Hope you have written it correctly.

I have connected led strobe as I see it should be. I now have some action. Led (quite dim) flashes slowly with no jumpers, and I get a steady light with pin 8 jumped. Nothing with pin 9 jumped. But as I said, its not bright.

No spark????

Dave

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 12:01 PM   
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Status: offline 		I haven't read that anyone else has noticed the errors, particularly the strobe polarity. makes me wonder how many people have successfuly "completed" this project.

I wonder if old cdi might be a better bet??

Dave

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 12:23 PM   
jpanhalt


 

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quote:

First line of your hex differs slightly to mine, why??? Hope you have written it correctly.


I just un-zipped the hex file, changed the extension to .txt, opened in notepad, copied and pasted. Formatting into nice columns is lost that way, but the meat of the code should not be affected. I didn't bother firing up MPLab to look at it in any more detail.

John


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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 1:12 PM   
boating around


 

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Status: offline 		Unziping to folder and opening with programming software sounds easier and should work???

First time I programmed pic about 7 years ago I had an issue. I was viewing japanese web page using bablefish, when the hex file was downloading the file would be corrupted. You had to enter page without translater and download for it to work.

dave

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 4:00 PM   
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quote:

ORIGINAL: boating around

I haven't read that anyone else has noticed the errors, particularly the strobe polarity. makes me wonder how many people have successfuly ''completed'' this project.


With more then 100,000 hits on both CDI-topics, someone have to notice *your* problems into a early state........I can't find one, maybe it's you to make the problems.
http://www.rcuniverse.com/forum/m_4344316/mpage_14/key_/tm.htm#

quote:

I wonder if old cdi might be a better bet??


I think so.

BTW, please don't send me anytime a request to look to the forum, the forum will be notice me allready.

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 4:05 PM   
boating around


 

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Status: offline 		I see video of model, no proof of working cdi??????????

Dave

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 4:07 PM   
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Status: offline 		Why does John show different hex????

Dave

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 4:09 PM   
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Status: offline 		I post errors when I see them, makes it easier for others.

People on this forum not very helpful.

Dave

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 4:26 PM   
Bigboat


 

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quote:

ORIGINAL: boating around

I post errors when I see them,


Maybe only you have /make problems ?
First with the layout of the CDI, I have see over 100 pic's of PCB's from all over the world.
Second problem was the coil, the flashlight, the CDI program........wat's next ?

quote:

People on this forum not very helpful.


The people of this forum have make the CDI !!
Without this people there was no CDI !!
I don't like your attitude against all the people of this forum !!

EOD.

< Message edited by Bigboat -- 6/30/2009 4:27 PM >

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RE: New CDI - opensource project JMJ and Bigboat - 6/30/2009 4:42 PM   
boating around


 

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Status: offline 		Well I'm still sitting here wondering which parts are correct.

What polarity of led strobe pins is correct?

What other errors I may have missed.

I have made the thing as best I can according to your instructions.

Time to shelve it and move on.

Have a nice day.

Dave

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RE: New CDI - opensource project JMJ and Bigboat - 7/1/2009 4:03 PM   
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Another ERROR

Hall effect in pins as marked on component layout are all wrong.

Been down this road before, had I have known LOL

Dave

edit: I hope people have been reading what bigboat has been saying. I have asked several questions, some a number of times and he doesn't answer them. He says he can't see anything wrong, I am still finding errors. Well under the circumstances, I am sorry but I will not take all the blame.

< Message edited by boating around -- 7/1/2009 4:11 PM >

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RE: New CDI - opensource project JMJ and Bigboat - 7/1/2009 9:48 PM   
jpanhalt


 

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quote:

Original:boating around
Unziping to folder and opening with programming software sounds easier and should work???


Just how do you have any idea what is easier for me to do to get a quick look at a hex file? Did you know that I keep MPLab and other important software on a separate computer from the one I use to answer e-mails, surf the Internet, and participate in forums? That computer wasn't turned on at the time. Doing as I did will tell someone what is in the hex file. If it is corrupted, it will appear that way. It is just not going to invert two of the hex digits and leave the rest untouched.

quote:

Original:boating around
edit: I hope people have been reading what bigboat has been saying.


I have been from the start of this thread. We all owe thanks to Bigboat for providing the information originally and for the gracious help he has provided to anyone and everyone who has come along. I have never seen him not help a sincere person who was trying to make this DIY CDI work. He is not getting paid for his efforts. I just reviewed the Hall sensor connections, and they look OK to me.

Bigboat doesn't need any defense, but I would like to take this opportunity to thank him in this theater of criticism you are trying to create. There's an American saying, "Pioneers take all the arrows." I am sure Bigboat will understand what that means.

John




< Message edited by blw -- 8/6/2009 4:03 PM >

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RE: New CDI - opensource project JMJ and Bigboat - 7/2/2009 10:51 AM   
Bigboat


 

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ORIGINAL: jpanhalt


I have been from the start of this thread. We all owe thanks to Bigboat


Don't forget JMJ (who start with the old CDI-project and write all the code), Charlie (who help me with the C-code of the ignitioncurve) and all the others who help with the software and hardware to finish a realy good working project.
And if you can notice, the prices into the stores for CDI-units are much lower after this CDI-project.
There where even storeholders and factorys who mail me with the question if they may use and produce the CDI.
(wat do you mean errors in code or schematics, if there where any problems they aren't intrest)
If I had to say yes, there was no CDI-project anymore !!!!!!
They not only like to sell the CDI-unit, but also take the rights and we have to remove everything about the CDI from websites and fora.

quote:

Bigboat doesn't need any defense, but I would like to take this opportunity to thank him in this theater of criticism you are trying to create. There's an American saying, ''Pioneers take all the arrows.'' I am sure Bigboat will understand what that means.


Thx John !


< Message edited by Bigboat -- 7/2/2009 10:54 AM >

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RE: New CDI - opensource project JMJ and Bigboat - 7/2/2009 1:44 PM   
COM


 

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Status: offline 		Hi Rob,

So you mean the companies that are mass producing the cdi units are using the c code for the advance?

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RE: New CDI - opensource project JMJ and Bigboat - 7/2/2009 2:03 PM   
Bigboat


 

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Status: offline 		They want to buy the compleet project, but it's a opensource project.
Opensource projects belong to all the people.
I never sell hobby projects, hobby project must be for free.
I think they will rewrite the code and make a easy (webbased?) menu to manage the advance.
You don't need differend programs like Exel and MicroC to change the CDI-curve, only one program can do this.
I ask some programmers todo this also for me, but it take a lot of time to write this kind of programs.

< Message edited by Bigboat -- 7/2/2009 10:59 PM >

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RE: New CDI - opensource project JMJ and Bigboat - 7/3/2009 1:19 AM   
COM


 

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Status: offline 		Hi Rob,

If you did sell the rights to the cdi,would that mean I could not build my version although its a little different? and the C code is a modified version of what I have?

Charlie

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RE: New CDI - opensource project JMJ and Bigboat - 7/3/2009 1:50 AM   
Bigboat


 

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You can better tell me, big American company's like Microsoft, Apple and others fight every day about rights.
We, as normal people, don't have the money to win from a big company.

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RE: New CDI - opensource project JMJ and Bigboat - 7/3/2009 4:00 AM   
COM


 

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Status: offline 		Yea your are right.Just better off not to sell them anything.

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RE: New CDI - opensource project JMJ and Bigboat - 7/20/2009 3:47 AM   
COM


 

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Status: offline 		BigBoat,

I downloaded your autoAdance code and made a few changes to suit my own needs and I was wondering would I be better off using a 8 mhz osc on my pic? If so how would I need to configure the Timer prescale?Also what is the inital timing? ie at what degrees is the hall sensor set at 28 degrees or so? Thanks



Charlie

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