- Tue Apr 05, 2022 10:13 pm
#56338
PSIG wrote: ↑Tue Apr 05, 2022 2:01 pm It appears the majority of "blips" include a sync loss, with a total of (apparently) 9 sync losses. Oddly, the sync loss sometimes counts backwards or resets to zero. When this happens, several data streams wiggle, others have a slower transition (e.g., VBAT before and after certain events), and some show no change. Also, some show data that is suspiciously smooth, such as Lambda, which does eventually change from dead-rich but only for a moment. I presume there is no Lambda sensor in this system? If so, the blips are affecting data for stuff that isn't there. A clue.Yeah, not using O2 sensor right now, too lazy to remove the exaust and weld a nut somewhere there . I will build a gig to simulate a trigger wheel and isolate any problem the eletrical system may have, feeding the board with a 12V wall adapter. Doing this should make life easier.
JHolland wrote:If you have an oscilloscope then I would recommend monitoring the 5V rail, set it to trigger on a negative edge at 4.5V. Drop outs on the supply can cause it to reboot but you can also have erratic operation of the code where the 5V rail drops below 4.5V but doesn't go low enough to reset the processor -there is a 'brown out' feature to prevent this but I don't believe that it is enabled in the Speeduino code.Not having it make the things harder than should be and i recognize it. Will be looking for a cheap chinoscope in the near future, better than relying only to a multimeter. At the moment my 5V regulator circuit uses common electrolytic capacitors and they have no visual sign of damage. Can they fail somehow and cause fluctuation to the 5V or should they fail permanently?