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Summary of change:
Fero reported that '''Double VANOS works perfectly''' * it '''follows the target cam position perfectly''' * it is actually easier to set up than the PWM type actuator (eg. suzuki) * but high-side driver was required (so the protection-diode need not be removed from the solenoid-connector) ** a 4-channel low-Z-extension board was modified (4 tracecuts) to act as high-side PFET driver. Using 10k Rgs resistor, and driven from p259 (or other) outputs (p259/0,p259/1 and p259/6,p259/7, remember: pairs must be neighbors), with 510 Ohm. ** high-side driver is also required for Honda, where the solenoid has 1 pin grounded to the body '''Information needs some cleanup from''' * MembersPage/GunnarReynisson/VariableVanos * MembersPage/JasonVoytilla/BMW/Vanos especially trigger setup and initial cam-position target tables. ---- The intake VR polarity was originally wrong (rising edge) * interestingly, the intake actuation worked that way too. After swapping the intake-cam VR polarity (LM1815 likes VR falling edge on its input): http://www.vems.hu/files/Fero/BMW_M3/BMW_S52_doubleVanos_correctIntakePolarity.png Note that * '''exhaust-cam''' (which is 6+1 pulse) is connected to '''secondary trigger, the +1 pulse is toothcount=2''' * ''intake-cam''' (6 evenly placed pulse every 120 crankdeg, tooth_cnt=4,24,44,...) is connected to '''third cam''' (therefore "exhaust target" table is relevant for intake). ** Originally 1 pulse was inside the missing-gap, so this is different: implementation needs change, at least the configlet (possibly some other change needed, like separate "measure tooth" parameter for sectrig and third trig ?)
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