MicroSquirt ETA

mrbell · Post by **mrbell** » Fri Nov 10, 2006 4:46 pm

I have no idea how big a DB37 connector is and have no concept of measurment, so I think you ought to send that to me so i can see it for myself

nissan300sx · Post by **nissan300sx** » Sun Nov 12, 2006 12:14 pm

well since the serial connection is basically the same i guess if anyone wants to run usb cable instead of a serial cable we can get together and start another topic somwhere and try it out. i'd really like to get it to work for those guys who dont have serial ports. just another option to check out.

Bernard Fife · Post by **Bernard Fife** » Tue Nov 14, 2006 2:30 pm

Here are a few more pics of MicroSquirt:

This is the MicroSquirt 'kit' (does not include the injector):

The injector gives an idea of the size.

Here's one next to a V3 main board:

This is next to MS-II:

Lance.

Mk1rocco · Post by **Mk1rocco** » Tue Nov 14, 2006 3:20 pm

Getting back to the original topic of this thread, is there an ETA for general release?

MegaScott · Post by **MegaScott** » Tue Nov 14, 2006 4:31 pm

Lance,

Dang, that injector looks huge!

My next adaptor board for the Microsquirt is almost done, there will be no problem installing that inside a Stock ECU case. (MicroSquirt inside!!)

Just waiting like everyone else, making a fool out of myself (like I need any help there) and drooling all over my keyboard......

Post by **Bruce Bowling** » Tue Nov 14, 2006 5:16 pm

Mk1rocco wrote:Getting back to the original topic of this thread, is there an ETA for general release?

ETA is close, but I am still working out last minute details on the harness and assembly. The harnesses that I had built up need some tweaks on the serial cable and such. And I am getting a few more units engine-tested, especially the dual spark mode w/ dual VR inputs.

I am having one dyno tuned at the moment, and they have the engine up and running, but they need to fix their injector arrangement. Their current setup is 8 low-z injectors (4 per bank). Microsquirt is designed to drive a maximum of 5 amps per bank, anything more and the driver chip (VND5N07) will start a linear current limit mode to maintain 5 amps. These low-z injectors measured about 4 ohms, so 4 in parallel yields (4 ohms/4) = 1 ohm load. Without current limit the current is (12V / 1 ohm) = 12 amps. Since the drivers limit the current at 5 amps, the remainder is thrown away as heat as the driver servos into a current limit mode. The difference between 5 amps and 12 amps is 7 amps, this is what is dissipated in the driver as heat. The power is I*I*R = 7 * 7 * 1 = 49 Watts!!!

The setup is switching to 12-ohm injectors. With 4 per bank, there will be a total of 3 ohms load, and the current is 12/3 = 4 amps, this is below the 5-amp current limit, this will operate fine.

- Bruce

wildwestsydney · Post by **wildwestsydney** » Tue Nov 21, 2006 5:28 am

Has a price been set yet?

thanks

jon volk · Post by **jon volk** » Sat Nov 25, 2006 11:22 am

Does it look like it will be out before the end of the year? I need to buy an ECU for a project before the end of December and this would fit the bill perfectly. I dont really want to buy another MS1 v3.0

coldfusiontechnology · Sun Nov 26, 2006 4:32 am

jon volk wrote:Does it look like it will be out before the end of the year?

yeah !! can't wait to EFI my bike ! ... keep up the good work !

larrycavan · Post by **larrycavan** » Sat Dec 02, 2006 8:51 pm

wildwestsydney wrote:Has a price been set yet?

thanks

Hmmmmm.....no answer...

Could we have some kind of a ballpark price? and / or availability date?

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