Megasquirt Info Thread

[Whizbang]

works out then. Ill wire it like that.

[Whizbang]

I have a DIYAutoTune built MS unit. I thinks its an MS2. I am also using a USB to serial adapter (eek).

I have the FIFO off so there is no buffer. I have tried both sets of rates (matching on each end). Com ports should be correct as well. I still wont rule out the cable but i have no access at the moment to anthing else.

Getting "no response".

When i turn the key to "on" i get a quick flash from the LEDs but none of them stay on. Should any of them remain on without the engine running? I have the wiring in the rear as per the mega manual with only the one voltage source from a switched ignition.

So...any thoughts? I have heard of having to flash the ECU with firmware (this has never been used prior nor have i had it communicated). But i can't connect to begin with.

[vex]

Originally Posted by RotaryProphet

Just two fuel injection outputs, but up to 4 spark outputs, plus a bunch of other random stuff. Unfortunately, a lot of the other stuff requires mods to the board.

So there's no way to increase the total input/output count? say, have 4 spark out, 4 inj out, 18 aux out, bunch of inputs, etc.? Could I do it if I soldered in some more components or something?

[Whizbang]

i downloaded the newest DIYautotune package and am going to try it tomorrow.

One question i have that is how does the whole "project" selection thing work when i open megatune. Seems more like versions of the program than a "project". I had a car1 option on the laptop im using right now, but the tuning laptop lacked this. car1 had a similar interface as the FAQ on the Rx7club's megasquirt forum for the constants. But most of the other listing i do have, like MS-2 Extra 2.1.0 from the list, is different.

[RotaryProphet]

Originally Posted by vex

So there's no way to increase the total input/output count? say, have 4 spark out, 4 inj out, 18 aux out, bunch of inputs, etc.? Could I do it if I soldered in some more components or something?

Aux outputs and inputs can be had by using the general purpose IO board, but not for spark or injector outputs.

There's also a router board that lets you do sequential fuel/spark control.

Both of the boards are still in beta testing, and both talk to the MS unit via the CAN bus.

Being a programmer myself, I've been working on various stuff of my own. My overall project is a modular ECU, but I've been testing with smaller scale projects. Right now on my desk I have a little computer designed to read two MAP sensors and control four actuator outputs designed to control a sequential turbo setup & electronic wastegate.

I might be in a position to offer aftermarket programmable sequential control soon, but a full ECU is a long way off.

[vex]

Originally Posted by RotaryProphet

Aux outputs and inputs can be had by using the general purpose IO board, but not for spark or injector outputs.

There's also a router board that lets you do sequential fuel/spark control.

Both of the boards are still in beta testing, and both talk to the MS unit via the CAN bus.

Being a programmer myself, I've been working on various stuff of my own. My overall project is a modular ECU, but I've been testing with smaller scale projects. Right now on my desk I have a little computer designed to read two MAP sensors and control four actuator outputs designed to control a sequential turbo setup & electronic wastegate.

I might be in a position to offer aftermarket programmable sequential control soon, but a full ECU is a long way off.

Please keep us posted on this. I don't mind having to write code, but writing machine code is a new territory for me so I may not be in a good position to help in any sorts, but knowing that it is possible to control aux inputs/outputs is good knowledge, as is the ability to do sequential fuel/spark is a big plus to me and may cause me to sway my previous decisions on ecu.

[Whizbang]

Got the car started! Ill attempt a good write up on this plus some base information that someone could use to get their car running (ie map and settings)