Developer Comment by R_Lefebvre on October 11, 2012 at 8:11am

John, how do you program these?  Do you use the Arduino IDE?  Or something else?

Developer Comment by John Arne Birkeland on October 11, 2012 at 8:26am

You use a program loader that either programs a hex file directly, or acts like a go between for the Arduino IDE so that you can upload program like with a regular Arduino board.

Comment by sergei lupashin on October 11, 2012 at 8:26am

Thanks for this, this is awesome! Direct link to PJRC product: http://www.pjrc.com/store/teensy3.html

Developer Comment by R_Lefebvre on October 11, 2012 at 8:39am

Ok, looks like you can do a lower level C++ program and upload a hex with the loader.  Or you can install an extension for the Arduino IDE that lets you program the Teensy directly from Arduino?

Comment by Rana on October 11, 2012 at 8:47am

128K Flash seems much smaller.

Developer Comment by John Arne Birkeland on October 11, 2012 at 12:22pm

R, that is correct.

Developer Comment by R_Lefebvre on October 11, 2012 at 1:18pm

Ok cool.  Basically, I'm interested in having more than micros() timing resolution.  But I guess if I used the Arduino IDE, that's all I'd get.  Do you know what the timing resolution is if using basic C++ programming?

Developer Comment by John Arne Birkeland on October 11, 2012 at 2:05pm

That is no problem, even on the atmega hardware if you just talk directly to the hardware. Arduino severely limits much of the available functionality trying to be user friendly.

For example if you have a timer with no prescaler on a 16mhz system, you theoretically get a timer resolution of 62.5 nanoseconds. But of course you have to spend some time requiring and processing the timer counter, so the practical resolution is worse depending on what you want to do. But beating micros() is no problem outside Arduino.

Comment by sergei lupashin on October 12, 2012 at 2:13am

I don't know what happened to Michael Zaffuto's comment, I thought it was very useful: spec-wise the FEZ Cerb40 does look like a good alternative (especially with the STM32F4) to this board..

Comment by robert bouwens on October 13, 2012 at 2:29am

the clocking speed of the teensy is a way beyond of what i would expect.

i would opt for the fez device.

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