Computer Control of a PWM design. work in progress.

[Lanmasterd]

Hey feynman
was checking out the ltc6904 chip the one u recommended .. your rite it doesnt have a shut down pin but it does have a nice feature that does the same job with the rite coding..
Output pin enable/disable..

that would do for gating .. as all gating is doing is reducing Amp draw.. in the end of the day.. since the battery is only importent for the first 5 mins of use till alternator gets going then we shouldnt have a problem..

wat you think..

Oh and i was talking to a college professor here about the java controled system he think its a good idea as do i but he brough to my attention that it might be a little over complicated.. i only saw this morning ur mail to me .. so ill give him a look at that too see wat he thinks..

Lanmasterd

[lefferdink]

Hi  Feynman:  You have the right idea, stay close to Stan Meyers invention.  If the  pulse speed has to be stepped up it can be done with the 74G08. I have been on the internet (ebay) and trying to find this ic chip is murder with my knowledge of the computer.  ebay finds everything that has 14 pins but my item. I'll get it sooner or later. This just isn't like repairing large air conditioning systems.
Later on I am going to try to show the electronic diagram if I don't get in trouble trying to attach it to our forum. The last time I tried to do this they gave me a new password.

[lefferdink]

Hi again Feynman:  I have only one problem with the alternator idea.  I have only a ONE WIRE OUT alternator and it connects directly to the battery. (ONE WIRE ALTERNATOR) It produces 139 amps.for my classic chevy.( 454 V8 engine, w/ss valves,and chromoly rings. built for Hydrogen)    It would be better to build a circuit. Taking a alternator apart and putting it back together (I have done it) is no ease job.  Please think about it.

[Lanmasterd]

Hey lads little update..

Work so far

USB control

Control chip

12v to 5v Supply {smoothed and regulated}

And yes its a 2x16 LCD display Header. with serial to paralell register.. any 2x16 lcd will work but ill enclude my recommended later..

And still plenty of room for more.

There are 3 more modules i have to add to the board yet.. well therse 4 but one is just using power from the board ...

check it out. tell me wat u think

Designed on Eagle Cad Pro

and programming will be AVR studio .. eventually..

Lanmasterd

[Feynman]

Hey guys

@lanmasterd

You are right;  there is an output enable pin (pin 7) of LTC6904.  Sorry I did not notice this before!   As for the alternator, I do not understand this part... I didn't say alternator, I said ignition coil... you could replace this with any high voltage transformer I suppose.   I'm sorry, I don't understand the electrolysis part very well.  My job is done once the square wave gets amplified.

Regarding the Java control program, we actually already have a lot of work done on it.  It will not be overly complicated, because we already have the software as well as 3 different microcontroller setups which are supported (myself, GK, and Jon).  Please private message me your e-mail and I will send you the latest version of the protocol.  It is ASCII based.

Here is a picture of the Java control program


Your latest setup looks good!


@lefferdink

Which chip were you trying to find?  I buy extras of all chips, maybe I can help you.