Help with building your Speeduino, installing it, getting it to run etc.
#68942
Normally, the PW is determined by internal fuel calculations of all factors (VE, Required Fuel, temperatures, voltage, etc). The number of injections is the same for each injector channel, but note alternating cuts these in-half. For example, 2-squirts simultaneous will result in 2 squirts from each injector, but 2-squirts alternating will result in 1-squirt from each, not 2.

The code appears to be broken in current firmware for Req_fuel versus #squirts and #cyl, using 2-cylinder 4-stroke. The latest INI throws errors on the latest code when I load it. :? I will let others answer, as I do not control code, nor does it (currently) do what we would typically expect. You could roll back to older code for deleted features (such as per-cylinder injector close angle, or more than 2-squirts with proper R_f division), but I couldn't tell you which code that would be. :oops: I hope others can help.
#70630
Hello after a long break. The engine is still alive, it's doing well, it's already running on E50, but I've started having problems with synclosts...
I've replaced the Speeduino PCB, Arduino, cables, coil and still the same.

I wanted to test the Tooth logger signal and surprisingly, while the tooth logger was running, the engine started working smoothly without sync losses....

The signal from the sensor on a cheap oscilloscope looks like this (I posted it on Discord).

sensor hall:
https://discord.com/channels/8794957359 ... 6092430448

Tooth logger:
https://discord.com/channels/8794957359 ... 9463544936
#70635
It appears the M52 "Seimens" sensor may be a biased VR, and by the sensor symbols, the M50 also uses a similar sensor type. I would test the sensor directly to verify. With the sensor disconnected, test for resistance across any of the pins to any other pin. Hall = no continuity or resistance, VR = typical 500-1500 ohms, but with bias may be different. Is this the original sensor on the engine?

[EDIT] There is a slim possibility it could be GMR, but that technology has only been common for about 10 years. <shrug> They GMR symbol looks like a bridge from NVE, anyway:
GMR sensor symbol.jpg
GMR sensor symbol.jpg (4.08 KiB) Viewed 462 times
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