vas
Well-Known Member
ok, it's a first world problem, but I got to solve it...
Added a small IR dome camera to the e/r (and will probably add a second one as it leaves a few blank spots)
Wired it up to the lower helm, give it 12V, Garmin both 4008 and 5008 pick up the signal and I can see the IR view on the plotter screen. All fine.
Now, I don't really want to have the camera running all the time and typically the breaker for 24V supply to NAV gear is on all the time as the AIS transceiver is there.
Further the 12V breaker for the NMEA2K bus is also mostly always on.
Now then,
I thought it wouldn't be a good idea to have the accessory on wire (orange, pin 17 in the typical blue GPSMAP 4, 5, 6, 7 K series plotters) that goes to V- when the plotter is on to do the earthing job for the camera(s) as I wasn't sure how many amps it will accept (and it's anyway a v.tiny cable!)
So, I got a Schneider micro relay on the el. panel and trigger it from the plotter accessory cable, so the camera(s) run only when plotter is on.
Wired all up, nada, doesn't work. measure with my vmeter and shows 3.5V on the coil of the microswitch with plotter on and theoretically orange being V-
FWIW, I got the V+ from the NMEA2K breaker.
So, I jumpered with another wire the orange to earth, relay clicked, removed the jumper relay stayed on.
So, seems that the tiny orange cable is not man enough to engage a bloody tiny microswitch! Doubt it will manage to run the camera as well!
makes sense, am I unlucky, missing something, in other words, what's the fcking point of having an accessory trigger wire if it wont run a thing?
TBH, turns out to be a pretty pointless feature...
Two solutions I can think of (both hacks!) are to:
A. replace V+ to a 24V one
B. replace the 12V microrelay with a 6V I'm waiting to arrive from ebay for another job (but got two just in case
)
cheers
V.
Added a small IR dome camera to the e/r (and will probably add a second one as it leaves a few blank spots)
Wired it up to the lower helm, give it 12V, Garmin both 4008 and 5008 pick up the signal and I can see the IR view on the plotter screen. All fine.
Now, I don't really want to have the camera running all the time and typically the breaker for 24V supply to NAV gear is on all the time as the AIS transceiver is there.
Further the 12V breaker for the NMEA2K bus is also mostly always on.
Now then,
I thought it wouldn't be a good idea to have the accessory on wire (orange, pin 17 in the typical blue GPSMAP 4, 5, 6, 7 K series plotters) that goes to V- when the plotter is on to do the earthing job for the camera(s) as I wasn't sure how many amps it will accept (and it's anyway a v.tiny cable!)
So, I got a Schneider micro relay on the el. panel and trigger it from the plotter accessory cable, so the camera(s) run only when plotter is on.
Wired all up, nada, doesn't work. measure with my vmeter and shows 3.5V on the coil of the microswitch with plotter on and theoretically orange being V-
FWIW, I got the V+ from the NMEA2K breaker.
So, I jumpered with another wire the orange to earth, relay clicked, removed the jumper relay stayed on.
So, seems that the tiny orange cable is not man enough to engage a bloody tiny microswitch! Doubt it will manage to run the camera as well!
makes sense, am I unlucky, missing something, in other words, what's the fcking point of having an accessory trigger wire if it wont run a thing?
TBH, turns out to be a pretty pointless feature...
Two solutions I can think of (both hacks!) are to:
A. replace V+ to a 24V one
B. replace the 12V microrelay with a 6V I'm waiting to arrive from ebay for another job (but got two just in case
)cheers
V.
