brtaylor
Well-known member
I was partly attracted to the teensy 3.5/6 by their raw power and the FPU, because I've got a strong hunch I'm heading towards fairly serious data manipulation and fusion algorithms from all the various sensors - simply to get the best possible / usable accuracy for attitude, direction and altitude.
Yes, I was drawn to the Teensy 3.6 for the floating point unit. I tried running an extended kalman filter on Teensy 3.2 and could only get about a 20 Hz update rate, I'm expecting this to be much faster when I get around to implementing it on Teensy 3.6. I'm hoping it's at least in the hundreds of Hz, which would be a fast enough speed to move a lot of this sensor processing off SOCs like the BeagleBone Black or Raspberry Pi and onto the Teensy 3.6.
I was attracted to SPI after reading the Perfomance section at end of your MPU9250 page on Github. I'm wondering if this may create a conflict with SPI for the microSD card on T3.5/6 ? But even if it is, the Kickstarter lists "3 SPI ports (one with FIFO)" so presumably there is a way to use the other SPI ports (or will be ).
Off to play a bit more ....
Have fun! Should work fine; in theory as long as the chip select pins are different, multiple devices can be on the same SPI bus. Please let me know if it works or not, I haven't had an opportunity to test with multiple SPI devices yet.
Brian