Help with voltage in CG2 controller

[rafaliyo86]

Hi guys

This afternoon was doing a led mod for a friend of mine. His controller is a CG2. Basically the mod was clear thumbsticks and red leds (smd 0603). Well once I have them soldered I have turned on the controller and the leds have started to heat up until the controller has turned off and when I have turned on again leds are burned. I am going to put a pic whith the + i have used, in the same pic i have circled a point that maybe I should have used??



What do you think? I did this mod in a CG controller (i dont remember what point did i use) and i didn´t have this problem

Thanks in advance

[3D0kassiah]

did you happen to use a resistor ?
to much voltage for those small leds will kill them almost instantly

[rafaliyo86]

did you happen to use a resistor ?
to much voltage for those small leds will kill them almost instantly

Yes I thought it but as I had done before without problems I thought that I didnt need it. So you recommend me to put a resistor

[3D0kassiah]

yes i do try it and report back

[rafaliyo86]

Well I think I am goint to use 3mm leds instead of smd leds but I haven´t the information about leds. What size resistor would be fine?

[FOOKz™]

Well I think I am goint to use 3mm leds instead of smd leds but I haven´t the information about leds. What size resistor would be fine?

220 ohms

[rafaliyo86]

I tried with 100 ohm resistor but leds shone less so if i put a 220 ohm resistor they will shine even less?

[FOOKz™]

I tried with 100 ohm resistor but leds shone less so if i put a 220 ohm resistor they will shine even less?

The higher the resistor value the dimmer the LED will be.




I wouldn't go any lower than 47 ohms because the resistor will heat up and melt the plastic case.

[RDC]

That power source is not switched like it is on the CG version controller, it's on all the time and it is whatever the battery voltage is.


It depends on the exact specs of the LED in question as to what value Resistor should be used, but a 'typical' Red LED will be around 2v or so.

You'll need to use a Transistor or OC and make a switched power source on the CG2 for your LEDs.  Once that's done, you'll be using anywhere from a 2.2v to 3.2v source, depending on which battery pack is used and what level of charge it has, so a 100ohm Resistor should be used on the LEDs, and they will dim some with the battery charge because that's not a regulated source like the CG controller has at that same spot.