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April 14, 2013
about 5 years ago
I found a reliable solution to using interrupts with the micro. For others that aren’t programmers (like myself), see my forum thread below:
I used C code to get the job done, but it works. This should enable access to all 5 the external interrupts. Chapter 11 of the datasheet was also very helpful, although didn’t have any examples. I didn’t explore it any further, but there is also 8 pin change interrupts available on the chip through C code.
about 5 years ago
So if I wanted to pair this with my phone and make a wireless headphone jack (for plugging into a home stereo), would I need to use a pre-amp between the module and the 3.5mm headphone jack?
If not, would hooking a set of headphones directly to this module damage it?
I couldn’t get the nano to work correctly with my PC for my life. I must have sat there for 6 hours over a few days trying different drivers, reloading the bootloader, etc. I plugged this guy in, worked first try.
A lot of people here have complained about the microUSB breaking off, but I haven’t had that happen with mine yet over the course of a few weeks. Others may have just gotten a bad batch.
Take note of the upgraded firmware, it saved my ass more than once. I was trying to use timer interrupts and learned the hard way that the ATmega16U2 timers are different than the 32u4. I uploaded a timer interrupt example using timer2, and it became unresponsive (TX LED stuck on). I ended up having to use the double tap reset, load a blank sketch onto it, then reload another program to get it out of “brick"state. If anybody else has this issue:
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