Red LED

[hockeyboy423]

I got a adafruit Trinket 5v the other day, while powering it up i noticed the red LED didn’t flash even once and as i went along trying to program it the code failed due to the inability of arduino being able to identify the board.

Product : Adafruit Pro Trinket 5v 16mhz
Screenshots :

[dastels]

That's a Pro Trinket 5v, not a Trinket 5v. Similar but different boards.

Do you have the board and port set correctly?

Also as stated on the product page:

Deprecation Warning: The Pro Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Pro Trinket so that people can maintain some older projets, we no longer recommend it. Please check out the Metro Mini (ATmega328 @ 5V 16 MHz), ItsyBitsy 32u4 5V 16MHz, ItsyBitsy 32u4 @ 3.3V 8MHz or ItsyBitsy M0 @ 3V 48MHz. All have built-in USB and are comparable in price! The ItsyBitsy's especially are about the same size and have native USB and tons of pins, so they're a very close compatible.

You may be experiencing a case of that.

Dave

[hockeyboy423]

I tried it on numerous computers ranging in different ages from new to old and not once has the Red LED even blinked or flickered at all. I don't know if I'm doing something wrong but it seems like no matter what I'm doing the red LED isn't even coming on for a split second.

[MMarugg]

I have the same problem. Ordered back in may. All board power up without the red led turning on even once. IDE only shows "Could not find USBtiny device (0x1781/0xc9f)"

I use the same old computer as i used in the past, boards form my last oder still work fine, board from this recent order all dont work.

If i power the board with a power supply through the GND und 5V pins the green light comes on, but not the red one. Which should happen, at least it did on older boards.

I tired to re-programm the bootloader by following the instructions. This also fails with these new boards, but works fine with older boards.