The BLUE wire and the GREEN wire

[radargeek]

You'll need to use a transistor to drive the relay.

A circuit like this will work on the green (5v) wire. Use a relay with a 12V coil.

[winterbrew]

I've bought 2 of these, which should hopefully work on the +5V green wire ;

http://www.ebay.com.au/itm/IACS-1-Ch...5b20544&_uhb=1

Attachment 2022

Have yet to test it yet

[Tman]

I've bought 2 of these, which should hopefully work on the +5V green wire ;

http://www.ebay.com.au/itm/IACS-1-Ch...5b20544&_uhb=1

Attachment 2022

Have yet to test it yet

From the pdf specification , at 3 volts , it pulls 60ma , i hope it works though as i tested the output
of the source , the max is 45ma .
http://www.iacs.co.uk/download/i/mar...0Datasheet.pdf

Which voltage did you order ?

Morale : please Al team , implement an easy way to trigger a 12 volts relay ....would make our life easier ,
thouh it is already in their plans

[Mirage]

That looks like it will work. The issue is the ALP is sending I believe standard TTL I/O. (+5v). Which is just not enough to drive a relay. Using that device will allow you to drive a relay based on the Vcc on the board triggering when the ALP goes high. Let us know how you make out.

[winterbrew]

That looks like it will work. The issue is the ALP is sending I believe standard TTL I/O. (+5v). Which is just not enough to drive a relay. Using that device will allow you to drive a relay based on the Vcc on the board triggering when the ALP goes high. Let us know how you make out.

Ok, just did a quick test of the relay - looks like we're in luck

Relay Board Inputs ;

VCC connected to +12V (car battery +ve)
GND connected to earth (car battery -ve)
CH1 connected to the ALP +5V TTL on alert (green wire)

The green LED on the relay comes on during alert, and you can hear the click of the relay activating. It remains activated all the time the alert is being played

Instructions say when relay activates, Normally Open (NO) is connected with COM (there is also Normally Closed (NC)) - confirmed with continuity check on multimeter.

[Mirage]

Ok, just did a quick test of the relay - looks like we're in luck

Relay Board Inputs ;

VCC connected to +12V (car battery +ve)
GND connected to earth (car battery -ve)
CH1 connected to the ALP +5V TTL on alert (green wire)

The green LED on the relay comes on during alert, and you can hear the click of the relay activating. It remains activated all the time the alert is being played

Instructions say when relay activates, Normally Open (NO) is connected with COM (there is also Normally Closed (NC)) - confirmed with continuity check on multimeter.

Great job now just remember whatever you connect is going to stay on during the entire alert as I stated in the op.

[winterbrew]

Yes, although at 12V supply voltage (the ones I ordered as I will be switching a small 12Vdc load), its quoted as < 45mA 'on'

[Tman]

Yes, although at 12V supply voltage (the ones I ordered as I will be switching a small 12Vdc load), its quoted as < 45mA 'on'

I see , just to let you know my experience :

i bought a very tiny relay , coil rated 3volts dc , the wires were not able to trigger such relay ...pita.

[beingaware]

What are you up to WB? Post in the secure Aussie section if its what I think you are doing...

Sent from my GT-I9505 using Tapatalk

[winterbrew]

Thanks Tman - will let you know

This is also quoted in the ebay text ;

Control signal voltage: Data level (3.3v) or TTL (5v) Range is 1-12v DC - takes less than 20mA from logic source.