Back at testing the sequencer again, currently running just the ignition - with fuel being provided via the existing MS2.
Noise issues found/resolved
- adding a 2K pullup on the red bootloader input to Vcc and removing the bootloader wire from the ampseal cleaned up the Vcc noise.
- the Vref has about 400mV noise on it with the engine running and the sensor connections not connected but well removed from any noise source - basically hanging off the outside of the fender. I'll work this tonight.
sequencer testing round 2
Moderators: grippo2, Bruce Bowling, grippo
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Re: sequencer testing round 2
Hey Marc, glad to see you're back on the case.
how is it that the VREF and vcc noise is 2 different issues? i guess i don't fully understand the difference between the 2.
interesting that you are doing ignition only first. when i was running both, i found that the fuel pulses looked great, but the ignition pulses were the problem items (prob because fuel pulses are grounding, and ign is 5v; either vcc or VREF?)
how is it that the VREF and vcc noise is 2 different issues? i guess i don't fully understand the difference between the 2.
interesting that you are doing ignition only first. when i was running both, i found that the fuel pulses looked great, but the ignition pulses were the problem items (prob because fuel pulses are grounding, and ign is 5v; either vcc or VREF?)