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geekhack Community => Keyboards => Topic started by: SmallFry on Wed, 30 November 2011, 21:44:27

Title: Teensy Dead
Post by: SmallFry on Wed, 30 November 2011, 21:44:27

I was getting ready to program my teensy with Soarer's code again (I had an older version flashed to the Teensy), when I plugged it in, the LED lit very very dimly. This leads me to believe that the Teensy is dead...:frown: Has anyone else had issues with a Teensy dying?

Title: Teensy Dead
Post by: DaemonRaccoon on Wed, 30 November 2011, 21:52:07

Try a different USB cable and port. It could just be that the LED/cable/port is failing or it can't get enough power.

Title: Teensy Dead
Post by: bpiphany on Thu, 01 December 2011, 04:13:25

How brightly the LED lights up depends on the "duty cycle" on the pin it is connected to. If the software change the state of that pin it will only be "turned on" for less than 100% of the time. So in effect you are "PWM"-ing it. Try uploading the blinky (http://pjrc.com/teensy/gcc.html)-example from pjrc.com and see what happens. Or read up on how to use that on-board LED and write a short program that just leaves it on.

I've found the Teensys very hard to break myself... I've been cutting into one with a knife a bit by accident. That did incapacitate two pins, but that's all.

Title: Teensy Dead
Post by: SmallFry on Thu, 01 December 2011, 12:27:59

I cannot get the Teensy to be recognized on my Mac...Therefore, PrinsVailum, I cannot upload any firmware :Cry: I will try a different port soon. I've used 2 different cables, so I don't think it's the cable...(drat!)

Title: Teensy Dead
Post by: bpiphany on Thu, 01 December 2011, 18:22:21

Ok, sounds like it might actually be bad then =P

Title: Teensy Dead
Post by: hasu on Fri, 02 December 2011, 09:41:31

Bootloader might be just corrupted? Though this is unlikely.
If you have a AVR programmer, you can try to write a new bootloader.