sorta kind of backfeeding? isolation?

rusefi / hw_microRusEfi

microRusEfi board for rusEfi ECU

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sorta kind of backfeeding? isolation? #93

Closed rusefi closed 5 years ago

rusefi commented 5 years ago

why did MRE 0.1 reboot on me while cranking? Do we have anything preventing backfeeding? isolation?

rusefi commented 5 years ago

@mck1117 says "re: low voltage dropouts, I removed r21, and now my board works down to 4.9 volts it used to die at 7.9"

rusefi commented 5 years ago

@jharvey let's remove R21?

@mck1117 says " with that resistor removed, it survived a (logged) minimum voltage of 7.6 volts"

jharvey commented 5 years ago

I think R21 is valid, it's just in the wrong place on the schematic. See R107 from the reference TBOARD schematic. Notice it's on the battery side not the key side of the filtering.

rusefi commented 5 years ago

TBoard_Wake_Key_schematci

rusefi commented 5 years ago

We will see how it goes with 0.3 I guess