YOUR RIGHT! NUTS and VOLTS. THANKS FOR THE INFO. I see that some of the other adventurers have already found a device that works in a similar way . Still a bit pricey and I'M quite sure I don't need a display to show me the status . But certainly the VMU is a work of art and indeed shows that the idea of digtal control verse analog is a cool concept. Looking at all of the pars generated to feed the ecu is the most accurate way of regulating the fuel mixture. The cost of the chips you suggested , does seem to make for a cheaper alternative . Would be easy for me to cad this into a design, along with the other hardware needed as an all in one type gizmo and still keep the cost factor down. There are quite a few low cost multimeters on the market that can be used as the system monitor, that also measures temp ,voltage and current etc. and could be intergrated by virtue of test points from the gizmo. ONCE optimized for a particular car , I, for one ,don't care about looking at a visual. One of the things, I have a question about ,is the operation of the VMU, the fact that there seems to be a touch senstive display that allows you to change the relative sensor outputs manuelly makes me think that the device functions in a manner that allows you to view the O2 ,MAP, MAF, etc , but functions in manner that requires you to manuelly make adjustments based upon the display data in order to optimize. Not sure if its a smart device, that is auto compensating or just a monitor with a digitally controlled output array. THANKS MIKE
mobilehydricity Wrote:HI THERE:
The pic or a basic stamp controller. Both are easy to program via you laptop or home computer. Try looking up a magizine titled NUTS and BOLTS.. Theres normally a page or two each edition to some pic or basic stamp project. Yoy can program a basic stamp by using the WINDOWS VISUAL BASIC PROGRAM... most of the commands are in basic which is cool place to start for newbies. EXAMPLE:
if a=< 100 then print
A simple basic instruction!
The magazine is called "Nuts and Volts" - I knew what you meant though..
As an addition to the microcontroller debate, I've used the BASIC Stamp and it is a wonderful little chip. Parallax ( http://www.parallax.com ) makes it. They cost about $70 a piece.
A chip I would use, and have used, is the SX chip also made by Parallax. It has lot more horsepower that the Stamp and is much cheaper - $2.79 a piece. They also make a protoboard for $10 that has the power supply and small area to solder on your project, this includes the chip. The best part is the compiler is free and they have an excellent forum for help - free also.
From what I observed in the video, the VMU can be configured manually then left to run itself automatically.
Gets its feedback from ECU, MAF, O2 sensors, and possibly OBDII connection, etc.
Bit pricey for me, and may be a bit of overkill into the bargain. Fully functioned "Boy's toy"?
I see that now! again more eye candy that I don't need. A good deal of thought was put into the design of that device. It would still seem to have to work on the principals discussed earlier in this forum. I think I'm going to continue working towards a design of a gizmo with less luster , high functional characteristics and low cost. I think the SX chip you suggested is enough of a power house to do the trick. By the way , I checked out your site, nice one indeed. The vmu states that its BIOS is upgradable, I am thinking that the term bios was being used in place of rom code, as more people identify with that term. You know a flash rom
seems to be a neater way to go , so as , upgrades of standized data for individual type cars could be downloaded and upgraded thereof. LATER MIKE