Home-brewing an ignition advance control

[Bill the arcstarter]

Cudabob wrote:

>I just picked up (purchased) a "programmable EI system" from an 
>outfit in Australia. (KitZ). It is based on a PIC 16C84 and features 
>multi cylinder choices, dual programmable advance curves and 
>other nice features. But I digress....Tony Nixon who wrote the 
>program, willing shares his concepts and even a copy of the 
>original code is/was on his home page....something or other 
>"picknpoke". 

Sounds like great fun!  Does anyone have a url/email address for this?

I'm contemplating something along these lines myself.  Where can I get 
the fittings which connect to the back of injectors?  Seems like all 
injectors are designed to plug into a special fuel rail, etc...  Hints?

Oh, I checked out that National LM1949 driver someone mentioned 
recently.  Looks like a winner.  Another fun chip is the Linear Tech 
LTC1294.  This is a 12-bit 8-channel (4 channels differential) A to D 
converter which operates across a 3-wire interface...  You could (and I 
do) read all sorts of MAPs, TPS, air/coolant sensors etc with just one 
of those guys...

>The basic idea is to lock both the advances (mech  & Vac) at full 
>advance, set the distributor at 45 deg BTDC and delay firing the 
>coil by a calculated time, based by rpm. Simple eh?

Wouldn't there be a phasing problem between the rotor and the 
appropriate distrib post if it is set for 45 degrees?

Thanks for a great list!
-Bill the arcstarter
Starting arcs in Cinci, OH
http://www.geocities.com/CapeCanaveral/Hangar/6160


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