night199uk - continuing to add my engine to my ...
continuing to add my engine to my HALMET for monitoring.
i'm trying to get the digital inputs working for the overtemp alarm, oil pressure alarm and sail drive seal alarm.
i wire those alarm wires up to the HALMET simplistically. when i put a voltmeter on e.g. the oil pressure alarm i see ~10.5v when it's lit, and ~0-1v when it's unlit.
when I put those wires onto the HALMET d2 input:
originally i was getting intermittent on / off alarms, randomly. i assumed this was because i needed to enable the pull down resistor; so i soldered/shorted the pull down.
now, the d2 input doesn't seem to go "up" even when there is 10.5v across the input.
what am I missing?
i'm trying to get the digital inputs working for the overtemp alarm, oil pressure alarm and sail drive seal alarm.
i wire those alarm wires up to the HALMET simplistically. when i put a voltmeter on e.g. the oil pressure alarm i see ~10.5v when it's lit, and ~0-1v when it's unlit.
when I put those wires onto the HALMET d2 input:
originally i was getting intermittent on / off alarms, randomly. i assumed this was because i needed to enable the pull down resistor; so i soldered/shorted the pull down.
now, the d2 input doesn't seem to go "up" even when there is 10.5v across the input.
what am I missing?
