I heard that the ON LED is supposed to be green... Also, it seems to already have the Blink sketch uploaded, but whenever I try to upload another sketch, it doesn't work, saying: "avrdude: stk500_recv(): programmer is not responding" I have set the board and serial port correctly. I use Mac OS X…

"ON" LED is red

Grumpy_Mike February 2, 2013, 10:15pm 6

You could try asking Massimo if they have ever produced them with a red on light.

Topic		Replies	Views
Arduino UNO - "on" light red IDE 1.x	12	37853	May 5, 2021
Red power light IDE 1.x	14	28136	May 5, 2021
New R3 from Amazon = avrdude: stk500_recv(): programmer is not responding IDE 1.x	6	2116	May 5, 2021
New Uno - No Green light, but yellow blinking IDE 1.x	3	1304	May 5, 2021
arduino uno red led,s IDE 1.x	8	12639	May 5, 2021