RE: TCI-ignition
O.K. ...I thought that L4 would go there. Thanks for that. Few more errors now on your new schematic. There are two entries of C3...one on incoming filter and one on the base of Q2 Also two entries of C7..........one on input of regulator and one on collector of Q2 C6 has disappeared. I think maybe schematic should be corrected first as the layout depends on this. None of this a problem as it is easy to see mistakes. Just that it is incorrect.
Posted on: 11/2/2009 9:59 PM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9223906

RE: TCI-ignition
A few errors in your pcb layout and I tried to use Layo program to rectify it but found it a little less user friendly than Circuitmaker program I normally use. So I have redrawn it using my program. Just about to make a pcb so I will let you know how it goes. Another thought along the lines of your designs, wondering how you log the best revs versus timing advance. One would imagine a manual advance where you could vary a pot setting to adjust delay time and then see how it affects the revs. Then plot the results?
Posted on: 11/1/2009 1:34 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9219267

RE: New CDI - opensource project JMJ and Bigboat
At this end we are building small four stroke engines and weight is not of concern. Neither is high rpm but a well performed engine is and this is why we would like to get this system working. Most engines so far have been single cylinder or twins with the last one a four pot. In this last engine, it was decided to go with glow ignition and avoid the spark as there was not much information available. Now the V8 is on the drawing board and we would like to make use of this alternative.
Posted on: 11/1/2009 12:51 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9219135

RE: TCI-ignition
Bigboat, I recall asking about this setup as a "tag-on" for your cdi a few months ago. Thanks for chasing it up. I have a circuit (shown once before) that I have used for many years and works well. Thought it may be an alternative using other components for the power section for some people. 3 terminal device on far left is hall effect so obviously delete this and tap into micro at the 10K ...470R junction. Also delete tacho section if not needed. (BC558) The MJ10012 is an ignition control darlington transistor and therefore needs no external flyback protection as it is "built in".
Posted on: 10/27/2009 8:05 PM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9207377

RE: New CDI - opensource project JMJ and Bigboat
Is it possible to connect controller section to a standard transistor and ignition coil?
Posted on: 10/4/2009 1:49 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9144975

RE: New CDI - opensource project JMJ and Bigboat
B/Boat I had a look around the Russian site. Seems they have taken on your project with enthusiasm. I have a query about tagging a power board that I have used here for many years, onto the end of your controller board. It is standard transistor and coil arrangement. If I remove the hall effect from my circuit (shown below) and tap the base resistor of the BC640 into the 150R of the opto in your circuit, will there be a need to write a new program. I understand your controller normally gives a pulse to the SCR trigger but I would need a saturation time if i use a coil.
Posted on: 5/29/2009 8:53 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8808369

RE: WinPic800
I felt it was relative because it was software quoted to use in the "New CDI" discussions.
Posted on: 5/19/2009 3:24 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8780890

RE: New CDI - opensource project JMJ and Bigboat
Thanks.... put in jumpers and working OK now.
Posted on: 5/18/2009 4:12 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8778144

WinPic800
Anyone know where to get instructions for use of Winpic800? Click help tab in program but nothing comes up.
Posted on: 5/17/2009 2:37 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8775429

RE: New CDI - opensource project JMJ and Bigboat
[quote]ORIGINAL: bluejets Went to the site shown at the beginning (1) of this discussion built microcontroller board. Downloaded the c-code. Copied and pasted into MicroC as told but what do you do now? So went another path and downloaded hex file and programmed into my board but all it will do is make a led on the output of the optoisolator flash at about a 1/4 second on-off cycle. Input
Posted on: 5/17/2009 1:37 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8775351

RE: New CDI - opensource project JMJ and Bigboat
Went to the site shown at the beginning (1) of this discussion built microcontroller board. Downloaded the c-code. Copied and pasted into MicroC as told but what do you do now? So went another path and downloaded hex file and programmed into my board but all it will do is make a led on the output of the optoisolator flash at about a 1/4 second on-off cycle. Input from hall effect unit has no effect on output. If a bridge from pin 8 is taken to ground, the led stays full on but that's about the only action I can get out of the whole project. Any ideas?? Lots of work with no result.
Posted on: 5/17/2009 1:22 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8775323

RE: Opensource CDI ignition
Reference (above)... Oatley Electronics ..... Surplus fluro inverters for ferrite trigger transformer ($4.00) part No. CFLINV Disassembled one unit to see what parameters were. It has an output winding of 380 turns 33awg. I removed a second unit and left the output winding and insulation in place and re-wound primary and feedback. Seems to work ok on testboard but not sure of effect on available energy to main capacitor. Getting around 500Vdc
Posted on: 3/29/2009 5:40 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8627915

RE: Opensource CDI ignition
Asked this question myself (go up a couple of posts) Apparently not according to bigboat.
Posted on: 3/27/2009 10:03 PM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8623795

RE: Opensource CDI ignition
By the way, if you really want to go the Digikey way, here are the responses from the US supplier and the New Zealand supplier. The following is for the supply of 5 only 0.1 capacitors with a cost of 15 cents each. Thank you for the email to Digi-Key Corporation. I am sorry that shipping is so expensive. Our only options for shipment are UPS, FedEx, DHL or sometimes we can use the Unites States Postal Express. I did check UPS Express and it shows $70.00. Fed Ex express is 75.24. I did check the Postal Express and found that to be around - $35.00 or so and they say it could take 5 to 7 days for you to receive them. I do believe the other carriers would have them to you in a couple of days. By the way, Digi-Key Corporation is located in the United States, in Thief River Falls, Minnesota and our only warehouse is here. If you checked our New Zealand site, the shipping is still from here. Thank you for your email! Part number UVR2A0R1MDA-ND is a non-stocking part for us. We do not stock it but we can order it for you. [b]The minimum orderquantity is 2800 pcs[/b][u][/u]. We do stock the rohs compliant/lead free version. It is part number493-1136-ND and we have 5 pcs in stock. The unit price is $0.15, $0.75 forall 5 pcs. You will have to order through our US site as you are in Australia. You canonly order through the NZ site if you are shipping to NZ. Sorry for the bad news.
Posted on: 3/27/2009 7:13 PM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8623050

RE: Opensource CDI ignition
Found suppliers of various parts in [b]Australia[/b] for anyone interested. Jaycar..... (C6) 470n/400 cap (630v in this case) RG-5247 Farnell..... (C3 and C7) 0.1uF/63V electrolytic order code 9452729 Hall sensor (Allegro) A3240EUA-T order code 1141949 (used these before with other ignition systems I've built) Oatley Electronics ..... Surplus fluro inverters for ferrite trigger transformer ($4.00) part No. CFLINV Also small magnets 3 x 1.5 .....part No. G58 ($0.25) (use these before also and they work ok... leave about 2-3mm gap between magnet and sensor) All other parts from Futurlec (on-line http://www.futurlec.com.au/Components.jsp ) I have not at this stage wound the trigger coils onto the above transformer bodies. So I do not know if they will work or not however, they seem to be the right size and I will re-post the results.
Posted on: 3/27/2009 7:03 PM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8623009

RE: Opensource CDI ignition
50 years apparently not long enough...... thanks for info all the same. No digikey in Australia though..... maybe look at RS
Posted on: 3/26/2009 9:05 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8618083

RE: Opensource CDI ignition
Need assistance on capacitors quoted in diagram as C3 and C7. These are shown as being [b]100 nano electrolytic[/b][u][/u]. I have been around electronics for many years and have never seen an electrolytic under 470 nano and rare at that. None are listed in any suppliers here in Aus. Can these be substituted by 100 nano MKT / 50 volt? (MKT = metalised polyester film) or/ is there an error in the diagram and parts listing?
Posted on: 3/26/2009 6:36 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8617859

RE: Opensource CDI ignition
See how I go and I will post back success. Built a few engines before and although this will initially be used in a test bed single cylinder, intention is for final use in V8. Have 4 cylinder 25cc in scale Rivierra (1930's era) but this is methanol and glow. (Hull 60% complete)
Posted on: 3/26/2009 5:17 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8617803

RE: Opensource CDI ignition
OK....did what you instructed within MicroC and can see where to replace data. Many thanks .......
Posted on: 3/25/2009 6:32 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8614286

RE: Opensource CDI ignition
Hello Denmark (place of my grandfathers origin) Thanks for the help. I think I know what you are referring to so I will try it and see how I fair. Did you use the 20 meg chip also? ...... 16F628A
Posted on: 3/25/2009 6:30 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8614261

RE: Opensource CDI ignition
Thanks for info on using 16F628A chip. Your reference to reprogramming chip using MicroC to produce new hex file with a revamped timing curve has raised another question, or rather another conformation. Do I then get my new curve details out of the spreadsheet, copy and paste just this into MicroC to produce new hex file. If so, when I use this info to re-program the chip, will this not be the only data in the chip? As I understand it, the re-programming will erase any previous program. Rather, do I have to dig into previous file and re-hash to remove old timing data and replace with new info? As I said previously, I have no experience with re-writing of program details, and I can't just duck down to the nearest high school and get someone to do it for me. Prepared to give it a go given correct and complete directions though.
Posted on: 3/25/2009 6:00 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8614248

RE: Opensource CDI ignition
New to forum and would like to have a couple of details clarified. The new cdi page is shown as being at http://www.modelbouw.gompy.net/newcdi/newcdi.htm ....... correct? So I went there and downloaded project details at the bottom of the page. Also downloaded [b]circuit diagram [/b]that shows the microcontroller as being [b]16F628. [/b] There are many different ones so which one is the correct one for the project to work with the code downloaded? Some are............. 16F628-04/P..... 4 meg speed 16F628-20/P..... 20 meg speed 16F628A-I/P .... 20 meg speed I took a peek inside the Testfunction C.zip and found reference to the following 100uS loop time // ; 4MHz clock / 4 = 1MHz instruction cycle // ; cycle time = 1/1MHz = 100uS // ; 100uS/100uS = 100 cycles // ; prescaler set to divide by 4 To me, this appears as though I should be using the 16F628-04/P, however, the parts list included in Layo1 folder under CDI1b_BOM.txt, shows the controller as being 16F628A. I have seen reference to this question before, allbeit in a slightly different form, however , there appeared to be no clarification at that time either. I have read through masses of pages refferring to this latest cdi and the older units but have found no answer. I am not into modifying code or changing timing within so would have no idea where to even begin. Also, there is a folder to download called testfunc_hex.zip. Firstly ,is this the program that has to be loaded into the chip? Secondly, if so, then am I correct in assuming there is no longer a requirement to download MicroC program and copy and paste C code into it to retrieve hex file? Can someone help? Thanks.....
Posted on: 3/25/2009 3:41 AM by Author "bluejets" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=8614143