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New CDI - opensource project JMJ and Bigboat

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Old 06-02-2006, 08:47 AM
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Default New CDI - opensource project JMJ and Bigboat

Finaly we can release the new [link=http://www.modelbouw.gompy.net/newcdi/newcdi.htm]CDI[/link]
Only the testfunction is not yet avalible, it is not reliable enough.


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Old 06-02-2006, 09:35 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

I no speaka the dutch...no comprehende....please put in engish also. Question.... why release somthing that is not ready??????? Capt,n Bone Head[:-]
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Old 06-03-2006, 12:36 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

Gee looks to me like the left side is Dutch and the right side is English, OR I've learned to read Dutch
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Old 06-03-2006, 08:14 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

TKG: You are right. On my puter screen it shows the Dutch side untill you use the bottom bar to slide the english side in view. Thanks Have a good one out there in the wide open West. Capt,n
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Old 06-03-2006, 08:59 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

Quote:
On my puter screen it shows the Dutch side untill you use the bottom bar to slide the english side in view.
Wat kind of screen do you have......2 inch and e resolution of 320x160 ?
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Old 06-03-2006, 09:40 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

on my screen I have to leave it minimized or the white space will blind you , 2- 21 " screens. they work great for cad programs and working on websites but a little much for rcu .
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Old 06-03-2006, 05:00 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

This is pretty cool. It would be even better if I knew what it all means and how to actually do it. Maybe someone out there can put it all the information together in a book called "How to make a CDI for Dummies", I'd probably buy a copy....LOL. At any rate, it really is cool that Bigboat has put this together and is sharing it with us. I'm sure there are some who actually understand it.
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Old 06-03-2006, 05:05 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

Please read this [link=http://www.rcuniverse.com/forum/m_3422690/mpage_1/key_/tm.htm]topic[/link]
Allmost every question you have was answert.
BTW, JMJ needs also a lott of credit !
If he didn't help me with the software, there was probley no cdi at all.
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Old 06-03-2006, 06:02 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

I would gladly second the thankfull folks.Great job.Best thing is that boat and JMJ decided to do this project as freeware.Folks like that are moving the hobby forward.
Peace out and Thanks alot!

Mitty
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Old 06-03-2006, 08:20 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

Bigboat: Why do some pages come on screen the right size and some do not fit at all. Like the ones I get from Flying Giants? Hey ....I am not a computer wiz...but can work magic on engines. I just tunned a 3 cylinder Mercury outboard. It now runs the best it has in 3 years. Capt,n
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Old 06-03-2006, 08:42 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

how about a 6cylinder inline mercury outboard , what would you suggest doing to get more out of it?
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Old 06-03-2006, 09:53 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

I never worked on a six cylinder Merc. I would start by just getting all the carbon out of exhaust ports and maybe open them up some. There may be a after market exhaust system with more of a tunned pipe effect. She is going to be very hard on your pocket book for gas. Thats why I went 4 stroke all the way. Even my little kicker engine is 4 cycle. Capt,n
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Old 06-18-2006, 08:13 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

Have yoy tried this one on a real engine, how many RPMs?
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Old 06-19-2006, 08:01 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

It runs on a weedeather engine and I have about 1000 / 1500 rpm more as usual.



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Old 06-19-2006, 08:38 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

Nice photo for sure. Now can you explain about some of the neat goodies hooked to the engine. Maybe make labels before you take photo. Thanks Capt,n
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Old 06-19-2006, 06:01 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

But how many RPMs is that?
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Old 06-20-2006, 12:02 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

Why so many fuel lines? What is all the wires for...ect? Thanks Capt,n
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Old 06-20-2006, 01:44 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

A weedeather makes about 7000 rpm, now I can make allmost 9000 rpm.
The cdi can handle >30.000 rpm without any problem.
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Old 06-20-2006, 09:30 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

Please tell me what kind of wire did you use in the tranfeormer, in mm please.
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Old 06-20-2006, 09:42 AM
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Default RE: New CDI - opensource project JMJ and Bigboat

AWG24 = 0.5mm
AWG30 = 0.25mm
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Old 06-24-2006, 06:24 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

re Using a fluro power supply transformer for the coil.
On the CDI page
http://www.modelbouw.gompy.net/newcdi/newcdi.htm

mention is made of using transformer from here:-
http://www.electroniccity.com/shoppi...65&brandinc=58

In Australia I have found what looks similar or the same (good price):-
http://www.jaycar.com.au/productView....asp?ID=SL2868

On the CDI web rewinding is mentioned-
" Unfortunately the transformer cannot be used without rewinding the coils "

Is this coil totally stripped of wire and rewound as per the torroidal?

So is the fluro supply merely supplying a E-Core?

cheers Jeff
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Old 06-24-2006, 06:32 PM
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Default RE: New CDI - opensource project JMJ and Bigboat


Quote:
Is this coil totally stripped of wire and rewound as per the torroidal?

So is the fluro supply merely supplying a E-Core?
Yes this is a e-core transformer and yes you have total rewind him.....sorry.
But I can't find a cheaper e-core without winds.
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Old 06-24-2006, 06:48 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

Re Suitable hall effect sensor
New to electronics - understand the basics!

I have seen mention of this Hall Sensor in the thread:-
"Also I want to use the H501 Hall switch (Unipolar type) from www.Conrad.de with the ordering code 185120-62"


Is this essential?
I have found this hall sensor-
http://www.jaycar.com.au/productView.asp?ID=ZD1902
__________________________________________________ _________________
UGN3503U Hall Effect Sensor

A miniature sensor to accurately track extremely small changes in magnetic flux density - changes generally too small to operate hall effect switches.

Specifications:
- Operating voltage: 4.5 - 6V DC
- Supply current: Typ. 9mA
- Output voltage: Typ. 2.5V DC
- Output resistance: 50
- Size: 4.5(W) x 4.5(H) x 1.5(D)mm
Applications include notch sensor, current monitor, gear tooth sensor, etc.
__________________________________________________ __________
Or should I go for the switch type?
http://www.jaycar.com.au/productView.asp?ID=zd1900
__________________________________________________ __
This device consists of a Hall Effect semiconductor sensor separated across a small gap by a magnet. In its normal state the Hall sensor (with inbuilt output transistor) is conducting. It will sink up to 40mA between the impressive temperature range of -40 to +150 degrees C. When an iron vane is introduced into the gap between the Hall element and the magnet, the output transistor switches off. The sensor is hermetically sealed, resistant to petroleum products and incorporates metal bushed mounting hols to facilitate fitting to a carrier plate, bracket etc. It is ideal as the commutator for an electronic ignition; however it has many other usage areas. Lead connections: Red V+, Black earth, Green signal (on/off).
__________________________________________________ _________________

My concern is that from reading about hall there are analogue and logic level hall devices.
What paremeters should I be looking for?
Cheers Jeff
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Old 06-24-2006, 09:19 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

Thankyou Rob for the reply on the E-Core - I will buy the fluro p/s and use the rewound transformer.

I am now researching locally (Australia) available hall switch.

From my reading to directly use hall effect with pic it has to be switch (high low) and not sensor.

Sensor could be used if pulse is conditioned as in 5Bears tim4 circuit or use of IC's?

cheers Jeff
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Old 06-24-2006, 11:02 PM
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Default RE: New CDI - opensource project JMJ and Bigboat

re suitable hall switch
Am I looking for the correct type of hall switch?

I think I may be closer with this
UGN3177UA
http://www.ortodoxism.ro/datasheets/...stems/3175.pdf

These Hall-effect latches are temperature-stable and stress-resistant
sensors especially suited for electronic commutation in brushless dc
motors using multipole ring magnets. Each device includes a voltage
regulator, quadratic Hall voltage generator, temperature compensation
circuit, signal amplifier, Schmitt trigger, and an open-collector output on
a single silicon chip. The on-board regulator permits operation with
supply voltages of 4.5 volts to 18 volts. The switch output can sink
10 mA. With suitable output pull up, they can be used directly with
bipolar or MOS logic circuits.

These are available for resonable price in Australia ~AUS$5
cheers Jeff
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