MicroSquirt.com read only forum (Jan.15,2018)

maxelrad

The 'Option' input drives an optocoupler MOC-205 which needs 10 milliamps for safe operation. As there is a 680 Ohms resistor in series, 10 milliamps cause a voltage-drop of 6.8 Volts. The LED of the MOC-205 needs 2 additional Volts. That is why 5 Volts are not enough for the 'option ...

Here some research results from ignition:

I have build up an test bench for MSing my Moto Guzzi (V2 90 degrees).

I just connected two Bosch blue coils (about 3.2 Ohms) to the ignition section, applied a spark plug each and started with an idle speed of about 700 rpm. Everything looked fine.

But ...

Yes, I have noticed that note in the schematic draw. That is why I'm wondering about the actually high trigger level. I use a UGN3120 Hall sensor which has a Ucesat of 150mV and there should be enough room to the threshold of 1.8V. But that question I will investigate later on.

In the current 12V ...

Bruce, Lance,

Now I have applied 12V to the OPTO and VRIN2 and everything works fine. For the VRIN I am surprised that such a high trigger voltage is necessary.

Thanks for your endurance.

Tubefan

Bruce,

That works.

So I have learned, that 1mA (5V / 4k7 Ohms) ist not enough to drive the Optocoupler MOC205. Can you tell me the threshold current?

Can you also tell me the threshold voltages of the VRIN and the VRIN2?

Tubefan

Lance,

that was the perfect hint. In my settings.ini the MAPbaro was set. So it was an easy fix. The tables are accessible now.

But one problem still exists: The MicroSquirt does not see the tach trigger signals, neither via OPTION+/- nor via VRIN.

Via OPTION the Hall signal toggles between 1.8V ...

Hi,

the megasquirt-II.2.8, the settings.ini are the latest version 2.881 (just fetched them today).
I am moving not from the 2.88 version, but from 2.867 which was delivered with the MicroSquirt.

Would you suggest to start frm 2.88?

Strange is also that the software does not see the cam trigger ...

Hi,

I have loaded the newest firmware into my brandnew MicroSquirt. But I have no access to the basic tables via Megatune 2.25p1.

Communication to MicroSquirt works. ECU type is set, Injection control parameters are also set except of the 'Engine type', which is not accessible too. See attached ...

kerbel wrote: I Use the stock injectors (14 Ohm)

kerbel,

Do you have additional technical information about the stock injectors. I do need the flow rate.

kerbel
did you have success to apply the MegaSquirt or MicroSquirt to your Guzzi?

What type of injectors do you use? The flow rate would be interesting.