i have one of those pumps laying around if anyone wants it...

psh, go big or go home. winboro 255 all the way;)

actually, you could use a diverter valve, like a nos solenoid, from your washer bottle to the sprayer. that'd be pretty convienient

Heres a more easily read schematic

Re: Automatic Ic Sprayer
 

Are any of you still interested in these? I'm about to order the PC Boards, which for those who want to save a little cash and assemble it themselves, will be about $9-$10 a piece.If enough people are interested, I can get the board cost down to about $5.

Also I'm wondering if I should make them connect through the USB port or the serial port?

If I go with the USB port, it will make it much easier for you guys to set them up on your home computers and not need a laptop.If I go with the serial and no laptop was available, you would have to use a home computer to set them up, and you'd have to hook up a 12v power and ground as well.But since USB provides its own power, you just have to plug it in to a USB port, program, then bring it out to the vehicle.

Re: Automatic Ic Sprayer
 

Also, are 2 inputs and 1 output enough? Should I add more?

Re: Automatic Ic Sprayer
 

Finally, would it be better if it got its input signals from the ECU through the diagnostic port, or if it got its inputs directly from the sensors?

Re: Automatic Ic Sprayer
 

Actually, a serial provides more power than a USB does. We went through all of this at work. We went through 6 different types of programmers trying to get one to work with a laptop. That is also why the AEM EMS uses a serial. The only problem is that most newer laptops don't have a serial. We ended up making a programmer at work that uses a 9v battery to power itself. That works pretty slick. I can show it to you sometime if you want to see it.

Re: Automatic Ic Sprayer
 

I'm talking about actual voltage/current to power the device, not signal level power.The USB provides 5v up to 500ma to power external devices, while serial provides no voltage or current for external devices.The supposed self powered programmers work by robbing power from signal or handshaking lines, something RS-232 isn't designed for, and can only supply a very small amount power anyway.RS-232 is supposed to have +/- 12v signal levels, which even at that level, can barely power low current programmers.With newer computers and laptops, the drivers only have +/-5v, thats why you couldn't get your programmers to work.I would imagine AEM uses serial as a cost saving measure only, as USB is more expensive and difficult to implement.Other than cost, RS-232 is far inferior to USB.

Re: Automatic Ic Sprayer
 

If you have DSMLink, you could use the Nitrous Controls to trigger a sprayer as needed.

Re: Automatic Ic Sprayer
 

If he had DSMLink, I doubt he would've asked about an auto IC sprayer in the first place.

Re: Automatic Ic Sprayer
 

I must have misunderstood what you were trying to do with the USB port. This should be a marketable product, and it is universal so it would work on more than a DSM.

Re: Automatic Ic Sprayer
 

with a check valve and a diverter valve, you could use your exsisting washer fluid container from either back or front or add another one, they work well. We have used them in the past on momentary switches for IC spraying. Of course you could control them via other means, iat/ecu etc. If you are after cheap and simple, you can't beat it.

Re: Automatic Ic Sprayer
 

Yep, I was refering to bus power and you were refering to signal power, easily confusable.

It sucks, I'm to lazy/unmotivated to market anything.It took me 3-4 months just to design the PCB, which took 15 mins

BTW What were you programming?

Re: Automatic Ic Sprayer
 

We were flashing Eproms in our corn burning stoves.

Re: Automatic Ic Sprayer
 

You just never know until you ask. :D