View Full Version : LED Help
Scratimus
01-22-2010, 12:29 AM
okay Im at a loss
I'm in the middle of installing 4 LEDs on my ROTF Rachet and I'm stuck
The 2 white LEDs(headlights) are wired Properly.
But when I attached an Amber(orange) LED (blinker Light) it wont turn on.
It works I have tested it, and I added a second battery still nada.
No the wires(+ and -) are not touching each other.
I have a LED Resistor(about 120 of them) think that will work?
Hotwire
01-22-2010, 10:28 AM
okay Im at a loss
I'm in the middle of installing 4 LEDs on my ROTF Rachet and I'm stuck
The 2 white LEDs(headlights) are wired Properly.
But when I attached an Amber(orange) LED (blinker Light) it wont turn on.
It works I have tested it, and I added a second battery still nada.
No the wires(+ and -) are not touching each other.
I have a LED Resistor(about 120 of them) think that will work?
PM Big Hank.
BigHank
01-22-2010, 08:03 PM
Okay, if this doesn't make immediate sense PM me and I'll get with you over the weekend!:D
You need to wire them in parallel. That is to say NOT "daisy-chain" them by running them in series (+ from one LED to the - of the next, and so on).
In parallel, EACH LED + and - touch the battery. Basically 4 LEDs will get the same VOLTAGE, but will split the current(read in milliamps, or mA)
White LEDs typically draw more current than orange LEDs, so you may need a resistor on the Whites to prevent them from pulling all the current and choking the oranges off (which will prevent them from lighting)
If a resisitor is needed, my default value is a 510 K (killi ohm) resistor, this will get you through 95% of TF related circuits.
If your resistors aren't packaged and labeled, look for one that is coded this way:
Band 1: GREEN (this is digit 1 on the code chart, read as 5)
Band 2: BROWN (this is digit 2 on the code chart, read as 1)
Band 3: YELLOW (this is the "multiplier", read as 10 Kohms, so it would equal 51 x 10kOhms = 510 kOhms)
Band 4: This is a "tolerance quality" band read as follows. GOLD= +/-5% of resistor rating, SILVER= +/- 10% of resistor rating, and no band is +/- 20% of resistor rating.
So for example a 510K with a Gold band can actually have a measured resistance of anywhere from 484.5kOhm to 535.5kOhm of resistance.
Hope that helps out!:cool:
Hotwire
01-22-2010, 08:16 PM
Told ya he could help. ;)
Scratimus
01-22-2010, 08:18 PM
So put the resistor between the whites?
BigHank
01-22-2010, 08:21 PM
Solder or wire the 2 POSITIVE legs (look at both legs on an LED, one is typically longer. That's the positive or "cathode") of both Whites together, then put the resistor between the White LEDs +'s and the battery. give that a try.
Scratimus
01-22-2010, 08:49 PM
10-04
BigHank
01-22-2010, 08:55 PM
I missed the part in the original post where the ambers were blinkers. Should still work fine, but keep us posted of the outcome!:cool:
Scratimus
01-22-2010, 09:41 PM
I missed the part in the original post where the ambers were blinkers. Should still work fine, but keep us posted of the outcome!:cool:
Not Blinkers as in Blinking
The Ambers are where the blinkers would normally be on a Car
Still no Go peep the pic:spider:
http://i194.photobucket.com/albums/z295/Scratimus/485997890_1704905583_0.jpg
BigHank
01-22-2010, 09:48 PM
That's a series connection. Give me a minute or 2 and I'll make a circuit for ya.
Scratimus
01-22-2010, 10:34 PM
http://i194.photobucket.com/albums/z295/Scratimus/486019655_1704988330_0.jpg take two
BigHank
01-22-2010, 11:21 PM
http://i334.photobucket.com/albums/m422/hankbig/ScrattimusCircuit.png
Try that out.
BigHank
01-22-2010, 11:22 PM
WTF^^
Let me try to resize that or you can save it to your desktop and enlarge! LOL
Scratimus
01-23-2010, 12:35 AM
i cant see it even on my desktop