Frankenso Hall Input
For example, Mazda distributor sensors.
Use Trigger #1 N for first sensor signal & Trigger #2 N for second trigger with 1K pull-up configuration
Leave Trigger #1 P & Trigger #2 P wires disconnected
Test 1.1: Expected resistance between +5v wire and Trigger #1 N wire: 1K (See Frankenso Default Pinout)
Test 1.2: Expected resistance between +5v wire and Trigger #2 N wire: 1K
Test 1.3: ground/unground Trigger #1 N wire, should see event counter in triggerinfo go up
Test 1.4: ground/unground Trigger #2 N wire, should see event counter in triggerinfo go up
Goto board info: Frankenso VR Input
PS: technically MAX9926 is not really needed for Hall processing, two channels on the op-amp would do the job just fine and Frankenso has all the jumpers provisioned to make this happen on channels #9 and #11. See Frankenso Cam/Crank Input
