RE: Complete new CDI - website open
 

Fault was indeed with .Net...would you believe an older version was still in the system.
All good now....thanks ....Jeff

RE: Complete new CDI - website open
 

Guys, my eyes are limited for reading (all the previous posts) right now. Do any of you fellows plan to sell a CD ignition for radio controlled airplane use? CH Ignitions here is ten USA has closed. They can do only advice. So we are looking for a source of CD units. The average advance is from 5 to 28 degrees. We use 4.8 volts for power. Can even double the input voltage. I myself would be satisfied with a fixed timing. Being lite & reliable is the main thing. What do you have? Thanks,Capt,n PS this should be a shielded ignition.

RE: Complete new CDI - website open
 

Charlie.. Did you get anything working yet?

RE: Complete new CDI - website open
 

There is a very, very, very small bug into the programs you have.
Mabye we allready have the solution tonight, otherwise tomorrow.
I just test the version, if anything is ok I will release him.

RE: Complete new CDI - website open
 

Hi John,

Only with the older version of The ignition controll software. The latest version crashes.

RE: Complete new CDI - website open
 

Latest version I have test.
http://www.test.gompy.net/cdi-hex.zip
http://www.test.gompy.net/cdi-prog.zip
The program is downgraded in communicationspeed.
Not all computers or communication hardware can handle high speed.

Berfor install the communicationprogram on your computer you must remove all other versions !!!
Choose the right port for your communicationtool.
In this version you have to place the sensor in TDC, there is no pickup position.
This will come back in a later version, the software and pic must first work without advange options.

This version have still one problem, it missing the first detection of the sensor.
We working on it, but it takes time to find the problems all by our self.
The programmer will do the job, but he needs feedback.....so do I.
Without feedback there will be no good working CDI or setupprogram.

RE: Complete new CDI - website open
 

Hi Rob..
Well, I have tested both versions of the software and hex files. The previous version you named 38400 works for about 10 seconds and then goes into a self oscillation at around 17,000 rpm as I flagged the magnet past the hall sensor, according to the monitor software.

The latest version does indeed skip the first magnet pass to the sensor but then worked for only 5 seconds before going into the oscillation.

I set the software for cdi, uploaded the table to the pic, sent the easy start angle and the data for laptime etc.

Communication between the pic and the ignition control seems to work great on my tests.

I'd like to see what everyone else is getting for results.

BTW, the second link for the software download is missing a dot in the address.

John

RE: Complete new CDI - website open
 

Hi John,
How is Dennis.Have not heard from in ages.
Had to close C&H.Have about 500 ignition circuit boards left over.Would sell cheap.Do not have transformers for them. There is a trans available that will work with a little rewire.I have a new double sided board that I have a transformer for.
BCCHI Went back to Billings h ospital last week did n ot get good news.

RE: Complete new CDI - website open
 

Hi Bill..
Last I heard, Dennis was about to fully retire from the aluminum mill..that was some time ago.
Hospitals aren't my favorite place for getting news like that either..Currently undergoing prostrate treatment myself and it didn't sound good according to the doc. Hope you can beat your problems

I used to buy the black square coils from you.. I'd like to find a source for those since they worked excellent for all my ignitions so far. I have some of them still functioning well after 15 years of use.I'd buy in bulk if the price was good.

Take care...

John

RE: Complete new CDI - website open
 

Latest version with first and second puls avalible.
http://www.test.gompy.net/CDI20101109.zip
I think we tackle the last bug.

RE: Complete new CDI - website open
 

Rob..
The first and second pulse are indeed back. I am still having the self triggering on all my timer boards. I can't find out what is doing it. As it is happening, I can unplug the hall effect sensor and it still continues to fire on it's own. It is sounding like a leaky cap is discharging into the circuit somewhere. I replaced all components on one of the boards and it still does it.
Can you PM me with your mailing address so I can send you one of these timer boards to test? Maybe if you see it happening for yourself, you can figure it out. I am at a total loss to explain why it is firing like this.

John[&o]

RE: Complete new CDI - website open
 

Hi John,

Do you have a logic probe or some way yo test the output of the timer board with it disconnected from the HV board? If you have a led, you can use it to monitor the output pin of the timer board. Will the HV board still trigger with the timer board disconnected or with the pic removed? If so then its most likley the HV cap is being over charged. I have seen this a lot while making these ignitions.

RE: Complete new CDI - website open
 

Youre right Charlie, the HV (SCR) will be ocsilate and not the timerboard.
With the start from the CDI-project of JMJ we have the same problem.
You can try to place a diode (BA155) over kathode - anode to solved the problem.
Otherwise you have to lower the Voltage from the HV-coil or replace the SCR.

RE: Complete new CDI - website open
 

Charlie..
The cdi board will not oscillate when either the pic is removed from the timer board or if disconnected from it. The cdi works perfectly with the hall effect as a stand alone ignition system without the timer and the appropriate resistor change to ground base. I can run an engine all day with it like that and not one misfire or self trigger. It only does it with the timer board connected. I checked voltage on the .47uf cap and I only get 250 volts fully charged ready to fire...in either configuration. It starts doing it after I trigger it the first time with the magnet, even if I disconnect the hall while it's oscillating. The older timer boards and hex files don't do this..only the newest timer boards. If I watch the LED on the timer board without the CDI connected, it does the same thing...first trigger, then a speeding up oscillation past 17,000 rpm then the board quits until I retrigger it which starts it all over again..
I have plugged all of my cdi boards into the timer board to test ( all 30 of them) and all act the same way. Tested all 30 as stand alone ignition cdi boards and all function normally, which to me, seems like the timer boards are the culprit..
In frustration, I switched to a Synchro Spark timer board and that worked perfectly. I guess it's back to the drawing board for my timer boards until I figure it out.


John

RE: Complete new CDI - website open
 

@John, do you use pin10 of the board ?

Place a resistor from pin9 to ground, to eliminate the 30kHz puls.

Can you sent me some photo's from the top and bottom of the PCB's ?

RE: Complete new CDI - website open
 

Rob.. I soldered a 10k resistor from pin 9 to ground.. same result.
Yes, I use pin 10 of the pic to run to the 470 ohm resistor which connects to the base of the BC547 transistor for the trigger output to the CDI board.

John

RE: Complete new CDI - website open
 

Can you test in the dark ?
Maybe you can see some sparks on the PCB.
It's possible the space between some lines is to small.
Clean the PCB and remove solderresedu, this can also the problem.
Please some photo's befor you sent me the PCB's.

RE: Complete new CDI - website open
 

Hi John,

according to the schmatic on Robs website the Inverter oscillates from the RC circuit. Not the pic. Unless I am looking at the wrong one.[X(] If the pic is controlling the oscillations of the transformer and the firing of the ignition coil then it has to be a software problem. I sent you a email.

RE: Complete new CDI - website open
 

We are ready with this project, http://www.electronics.gompy.net/cdi
The program "ignitioncontrole" and HEX are free from bugs.
Latest soft-and hardware will be on the website.

After five years I stop with the CDI/TCI-projects.
I've a lot of other projects who wait for me.
Sucses with anything you are gone do or doing.

Nice and small project, only for information.
http://www.electronics.gompy.net/TCI-2CV
Original website in French
http://www.francophone.ch/saluuut/allumage.html

RE: Complete new CDI - website open
 

[quote]ORIGINAL: Gompy

We are ready with this project, http://www.electronics.gompy.net/cdi
The program "ignitioncontrole" and HEX are free from bugs.
Latest soft-and hardware will be on the website.
<hr />
Are you going to have a few for sale? How about a pooto of a ready to use unit? Thanks Capt,n

RE: Complete new CDI - website open
 

Thanks a lot for all. Nice job!

RE: Complete new CDI - website open
 

[quote]ORIGINAL: captinjohn


Photo's will come, first I have to make ready to use PCB's.
No, we don't sell anything - All projects are DIY.

RE: Complete new CDI - website open
 

Hi Charlie..
I think I have located the part error in question on all my new timer boards.. It's Q2 on the new timer boards..

What happens is it goes into avalanche mode and keeps triggering and retriggering until it overheats and then stops or it is going past it's intended frequency of reliable operation and then stops triggering. I would like to replace them with another suitable transistor but I really don't have a comparison chart for similar or greater attributes of the replacement.. Any suggestions?

The part number I used from the schematic is a BC547 transistor which is what it calls for. Somehow though it's not functioning correctly in this situation.

I used a digital logic probe I borrowed from a friend and it showed no further output from the pic when the avalanche starts to retrigger the ignition. What I did find odd though is that the LED flashes in time with the retrigger mode and it's on a seperate output pin.. How is that possible if the pic is not retriggering itself to send output to 2 different pins????? Is it a feedback situation somewhere telling the pic to keep sending output to the pins? I am confused on this..

As I handle the board it will occasionally trigger itself also..extremely static sensitive. There's no protection I can think of to place in the circuit anywhere to prevent it..if you try, it stops all programed triggering.

What I want to try is an optocoupler chip like the old timer boards had to couple the trigger to the HV CDI board, to see if that added circuit stops the false triggers by eliminating the BC547. If that doesn't work, then I know it's coming from the pic itself since it would be isolated from the pic output. The old timer boards that I built and have working never had a problem with retrigger....and they all have the optocoupler on signal output stage. Am I going off the deep end with my theories or am I maybe onto something here? Let me know...

John

RE: Complete new CDI - website open
 

I think I see the problem.
The Voltage to the SCR-gate will not be low enough, it's not (real) grounded.
There is allway some Voltage over R7.
Try to replace C6 for a diode 1N4148, kathode to SCR.

RE: Complete new CDI - website open
 

Thanks Rob.. I'll try that diode.. I have tons of them.. Hopefully it blocks the voltage and stops the retrigger.

John