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Just thought I'd better mention that this command-format looked like it worked, but doesn't actually multiply correctly: int retVal = arm_mat_mult_f32(&matrixA,&matrixB,&matrixA); It works properly if I don't try to shortcut and use matrixA as the destination-matrix: int retVal =...

Haha! While tidying up my fail-code to make it presentable, I managed to get it working - typical ;) This is just a basic method for finding out where each of my robot's feet are with respect to the centre of its body, based on the rotations of its joint-servos, and its limb-measurements...

Thanks, I'll boil it down to an repro-example tonight

I think I recognise your code from my example-searches... My problems were probably due to my shaky grasp of values, pointers, etc in a real programming language ;) I'll experiment some more with arm_matrix_instance_f32, but use a separate USB-serial cable to debug with - whatever I was doing...

Has anyone looked into getting the Eigen math-library (or something with similar abilities) to work with the Teensy 3? I'm looking for a library that'll let me do matrix calculations easily, and this seems to fit the bill. I've seen that someone's managed to get this working on the Arduino...

Thanks Paul!

I've just been looking at the i2c tutorial page, and see that it recommends adding a "4.7K pullup resistor is connected between each signal and +5 volts". I assume that means between the SDA pin and +5v, but it's not super-clear as the example image doesn't show a resistor... I'm using a...

Ah ok, I think it's effectively a lost cause, then - I've not done SMD soldering at all before, so that would be a bit of a stretch for me :) I've still got a Teensy 2++ to fall back on, I'll make do with that for now!

Nice work, I'm going to keep an eye on this :) I'm trying to build a working Pip-Boy too - doing this is certainly teaching me a lot, and I'm buying a lot of new components! I'm doing the UI with Python on a Raspberry Pi, after I'd seen the version you'd linked to earlier - I'm coding it...

I've just put 12V through my Teensy 3 (by accidentally connecting it before my regulator, instead of after...) and now it doesn't work - as you might expect. :( Is there any chance I might be able to recover it by replacing any of the parts, a fuse or something, or is it now just an ornament?