Eckon ES24 Ground Signal Query

[michaelp]

Hello all,

 

I am going to wire up the above signal, the instructions say that the 'Blue' side of the bank of LEDs is the negative/cathode connection. Problem is there doesn't seem to be a Blue 'side' and all the LED legs are all the same length and I could only remove the Red LED and there is no flat edge on the LED.

 

Is there another way to tell which connection is which?

 

Thanks in advance

[cliff park]

Use a low voltage source, say 5v, and a 1k resistor in series. Make careful notes of which way round you connect positive and negative and try it. If it lights up it is the right way round, if not reverse it. It won't do any harm, it just won't work the wrong way

[michaelp]

Use a low voltage source, say 5v, and a 1k resistor in series. Make careful notes of which way round you connect positive and negative and try it. If it lights up it is the right way round, if not reverse it. It won't do any harm, it just won't work the wrong way

 

Thanks I will give that a try.

[Brian]

http://www.rmweb.co.uk/community/index.php?/topic/38001-eckon-ground-signal-es24/

[Izzy]

 A 3v coin battery such as a 2032 is good for testing 3/5v LEDs and you don't need a resistor.

 

Izzy

[SHMD]

I always use my multi-meter, set to "diode" to test for LEDs "in-circuit" as it tests them 'safely' and you can see them light up (red/green/yellow but blue/white can slip through).

 

 

Kev.