How to wire LED's to Banggood Power Boost ? ? ?

[rodocop]

Yeah, I'll try that, I have one more question, I don't have the banggood board in front of me right now, maybe its obvious, but how do I determine what side to put the positive and negative leg of the LED?

[RetroGamingNow]

So would you just wire the LED's directly to the board? Or do you need to have any resistors etc...I don't know much about wiring LED's.

I got to a point where i answered my own question so hopefully i can answer yours. You definitely need a resistor. Im using a 120 on mine and they work like a charm. The first slot will illuminate whatever color you choose when the battery is fully charged. The last will illuminate when there is a load. Havent figured out the second yet but maybe someone else will chime in.

[RetroGamingNow]

From my old notes this is the order the led row go's.
Red led charging
Green led charged
Blue led load in usb

Thanks for the help. I see we had a similar idea in mind with the location! https://www.instagram.com/p/BMAtDe7AU-z/

[Psy128]

From my old notes this is the order the led row go's.
Red led charging
Green led charged
Blue led load in usb

Thanks for the help. I see we had a similar idea in mind with the location! https://www.instagram.com/p/BMAtDe7AU-z/

Lol that's what I'm thinking of doing lol on my first gameboy zero I didn't have the cut out form the top but on this biuld I'm doing it. But I'm trying to find a clear case cartridge for it.

[RetroGamingNow]

From my old notes this is the order the led row go's.
Red led charging
Green led charged
Blue led load in usb

Thanks for the help. I see we had a similar idea in mind with the location! https://www.instagram.com/p/BMAtDe7AU-z/

Lol that's what I'm thinking of doing lol on my first gameboy zero I didn't have the cut out form the top but on this biuld I'm doing it. But I'm trying to find a clear case cartridge for it.

Nice! I like the cutout because it gets rid of the need for a micro usb breakout board! You should be able to get a clear cartridge from kitsche bent.

[Psy128]

Cheers I'll have a look

[Purple_Moogle_00]

From my old notes this is the order the led row go's.
Red led charging
Green led charged
Blue led load in usb

Silly me, I have opened a thread when I could have just used the search bar, however I would like to know if I can extend each positive to an rgb led and connect the grounds together? I do not have one yet but if anyone would like to try I would be very grateful sort of like this

2016-11-25 15.28.19.jpg (54.79 KiB) Viewed 10489 times

[fcib]

Some simple math to work out what size resistor you need:

Lets say those terminals have 3V across them.
1. Look at the specs of your LED for the voltage. Lets say we have a red LED that takes 2V. Write that down.
2. Look at the specs of your LED for the current. Lets say we have a red LED that takes 20mA. Write that down too.
3. Use the formula V = I * R. V is voltage, I is current, R is resistance (size of resistor).

To find V we take the voltage across the terminals minus the voltage rating of the LED. So now we have V and I, we can plug them into the formula:
V = 3-2 = 1
I = 20mA = 0.02A
R = ?

So:
1 = 0.02 * R

So if you know basic math, we can divide by 0.02 on both sides, so R becomes the only thing on the right hand side:
I added as many steps to help you understand.

(1/0.02) = (0.02/0.02) * R
(1/0.02) = 1 * R
50 = R

So we need a 50 ohm resistor. You can confirm this with http://ledcalc.com/ but it's good to know the math and not be lazy.
Remember this is an example, you need to do the same thing with your specific led specs.

Silly me, I have opened a thread when I could have just used the search bar, however I would like to know if I can extend each positive to an rgb led and connect the grounds together?

Yes it should work like that. I'm guessing you need a different resistor on each of the legs though, so use the formula I explained above to find the correct value for each one!

[Purple_Moogle_00]

Probably a stupid question but I don't see a charger on this board. Will the led charging indicator still turn on if I use a charger board such as this. I would connect the battery to the charger, and I would wire the output to the powerboost

https://www.adafruit.com/products/259?g ... AtM28P8HAQ

[fcib]

Probably a stupid question but I don't see a charger on this board. Will the led charging indicator still turn on if I use a charger board such as this. I would connect the battery to the charger, and I would wire the output to the powerboost

https://www.adafruit.com/products/259?g ... AtM28P8HAQ

You don't see a charger on what board? The powerboost 1000c and the banggood alternative both charge. The board you posted seems like a slower charger that has the load attached to the battery, so I think the output is only whatever the battery provides (3.7/4.2V, not enough for gb0).