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520 Posts Member #: 2093 Post Whore Grenoble, France |
21st Nov, 2007 at 02:24:11pm
Hi,
std 998 A+, g295, MD266, RHF4, 109hp @0.8bar/5400rpm |
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 8604 Posts Member #: 573 Formerly Axel Podland |
21st Nov, 2007 at 02:41:04pm
Megasquirt has three LEDs on the case.
Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
21st Nov, 2007 at 04:30:00pm
On 21st of Nov, 2007 at 02:24pm alpa said:
Hi, If you want a cheap and always present strobo on your engine there exist today power 1W (up to 15w) LEDs. I used a 1W one. Swithing it on for less than 1ms is enough to get a clear image of the reference. If you have a free output on your ECU (if you use an ECU :) ) it's likely a good investment as the worse thing with an ECU is to ignore what it's doing. To give a reference a 10W LED is like a 70W buble. With the difference the light cone is 120 degres wide instead of 360 degres. I like this  Im going to do it I have plenty spare outputs, infact i can set one up for Tacho and then divide that by two
Excellent Any links to the LEDs in question, save me searching 
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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 12307 Posts Member #: 565 Carlos Fandango Burnham-on-Crouch, Essex |
21st Nov, 2007 at 04:33:04pm
remember that you need to be a bit careful with these LED's as they can go into themal runaway fairly easily.
On 28th Aug, 2011 Kean said:
At the risk of being sigged... Joe, do you have a photo of your tool? http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1 https://joe1977.imgbb.com/ |
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520 Posts Member #: 2093 Post Whore Grenoble, France |
21st Nov, 2007 at 05:12:26pm
No there is no problem with DC or other. You have to cool them with a radiator, right, they are surface mounted and it's easy to place a piece of metal sheet between the LED and the PCB.
Edited by alpa on 21st Nov, 2007. std 998 A+, g295, MD266, RHF4, 109hp @0.8bar/5400rpm |
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11046 Posts Member #: 965 Post Whore Preston On The Brook |
21st Nov, 2007 at 05:17:32pm
What i meant was, the tacho output is every ignition event, you only need the TDC ignition event, therefore dividing by two should give you the strobe of use, basicaly its every other ignition event On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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520 Posts Member #: 2093 Post Whore Grenoble, France |
21st Nov, 2007 at 05:49:29pm
I understand but the pulse length matters. The tacho output usually reflects the dwell, which is >2ms. 2ms is too much to have a clear strobo image. std 998 A+, g295, MD266, RHF4, 109hp @0.8bar/5400rpm |
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62 Posts Member #: 1515 Advanced Member |
25th Nov, 2007 at 11:40:29pm
Code is easy enough to change. |
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