arduino uno red led,s

this is my second arduino uno board this one did detect through the usb cable and we did manage to install the drivers for windows 64 bit op system. we uploaded the fading led schetch to the board sucessfully, this board has 2 red led,s yes red not green when first powered up 1 red on led and one flashing led now with sketch on 1 red led staying on ????? so this seems like the 2 green led,s on the previous board except they are red not green?? and i to conclude that the maker ran out of red ones has anybody else gor the same red led,s please help as i,m worried

On a genuine Arduino UNO the power LED is green and the 'L' LED (connected to pin 13) is yellow. Sounds like you have an Arduino clone made by a company that doesn't bother to get the colors right.

Clone makers use RED because they are cheaper. That gives you an idea of the (non-)quality of the clone boards.

Sounds like to me (as in concurring with the above posters) that your UNO board is a clone*. The standard* setup for the LEDs are Green for Power, and Yellow for the on-board LED.

Still, I have one rhetorical question. Why would a company use the Arduino trademarks and everything, when it's not a standard-issue one? It's because the pre-made PCBs are available online to buy. (Mainly from eBay, as my completely unscientific research has found.)

*I'm reluctant to use the terms "Fake" and "Proper", as the platform itself is open-source.

are thanks for the replies this board pcb is stamped with arduino so that explains how the clone builders have done it, cunning little chinese main thing at least this one actually works so the dead one can now be powerd up via this one in order to find out whether the chip is good on the dead one

martyb123: this board pcb is stamped with arduino so that explains how the clone builders have done it,

It isn't much of a mystery. The pcb file is available on Arduino.cc. Doesn't take much to download it and make one.

hi i just bought an arduino uno and i am new to this. the yellow led on my board keeps on blinking, can tell anyone tell me how to stop it

sahz: hi i just bought an arduino uno and i am new to this. the yellow led on my board keeps on blinking, can tell anyone tell me how to stop it

Upload this sketch:

void setup() {}
void loop() {}