# Industrial engine electronic management system development - HBA style

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#### blane.c

##### Well-Known Member
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It seems some of the COP can be had for around 20 bucks apiece, for un-cowled engines it may be ok if adequately supported, it is for 4.3 Toyota so should be reliable?
Other smart coils seem to start around 60 bucks and up.

#### Hot Wings

##### Grumpy Cynic
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I have zero experience with generic COP but genuine Toyota COP should be cheap and easy to find. The engines they were attached to, in both the Toyota and Prism, died early deaths due to oil usage.

And as rvejguy noted: Who knows what is really inside the cheap stuff!?

#### Hot Wings

##### Grumpy Cynic
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I'll be rooting around for some COP modules to use on my Briggs
I had some for my project. Had ... being the key word. Racoon got in the shop and ate them. Did a bunch of other damage as well.

##### Well-Known Member
For the driver, I'm thinking a very simple advance system. A magnetic pickup sensing a sector. For low revs, it triggers the ignition on the trailing edge. It steadily advances up to the leading edge. We don't need a very complex system and the simpler it is, the simpler it is to debug and make reliable.
My 1976 Ducati had that approach to electronic ignition. A 2 step trigger on the flywheel meant that at low RPM it triggered on the 2nd step (smaller air gap), then started triggering on the earlier small step at about 3000 RPM, advancing the spark timing by about 10-15 degrees or so.
That's probably all you need for aircraft use : retard for starting/idle, then full advance at working revs.

#### pictsidhe

##### Well-Known Member
I had some for my project. Had ... being the key word. Racoon got in the shop and ate them. Did a bunch of other damage as well.
****, it must have been hungry.

#### jbiplane

##### Well-Known Member
Great news. Open source RUSEFI finally made standalone 4 injection + 4 ignition channels ECU.
Seems this is only ARM based real time ECU where you can test all hardware connecting to desctop PC

#### jbiplane

##### Well-Known Member
I finally succeed with injection and ignition boards with functionality close to 3 time more expensive Megasquirt 2 Extra
1...4 cylinder for 150 USD
1...8 cylinders for 250 USD
At moment tested at -18...+80C on 4-stroke car engines
For aircraft use will use better connector or will make bunch of wires goes from ECU board
Some pins layout written on Russian, will make English docs soon

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