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Summary of change:
Some '''v3.6 (or newer) Sectrig=HALL notes''' (excerpts from GenBoard/Manual/InputTriggerHardWare) '''Unsolder SJ7''' http://www.vems.hu/files/ErikEnglund/pictures/IMG_0013.jpg * if you had sectrig=VR or sectrig=auditrigger (and converting to secrig=HALL), than also ** '''open SJ7 solder-blob on the bottom''', so LM1815pin12 output is DISconnected from the microcontroller input pin. This blob is on the bottom, close, to the line of FETs. ** actually this is the only step required if converting from sectrig=auditrigger (because that already has the HALL part of the circuit set up from EC36/13) ---- http://www.vems.hu/manual/html/images/Testing/v3.6_sec_trigger_1_m.jpg * the instruction says: '''all 5 throughole pads in the middle must be empty''' ** note: jumpers are also like wires, might need to reconfigure if they were configured for VR ---- '''Verification, R48, connecting the right signal to EC36/13 pin''' * EC36/13 sectrig input pin should be connected to the proper side of R48 (the other side of R48 is +5V) * '''With input disconnected: Should measure 3.7V or higher''' (absolute min 3.3V) at EC36/13 (or the CPU side of SJ7) when powered up and input not connected * With a 1kOhm resistor between GND and input (instead of HALL sensor), '''DC voltage should measure between 0.5V and 1.5V''' ** eg. 870 mV: voltage divider equation: U=5V * R/(R + Rpullup) ---- '''Verify in InputTrigger/TriggerLog'''
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