Howdy,
I just figured out that I made a couple of extra-dumb mistakes in this board I designed.
Mistake #1: I ran the i2c pins from my Teensy 3.2 to my accelerometer backwards! Clock is data, data is clock. D'oh!
Mistake #2: I neglected to add pullup resistors on the i2c lines.
Sorry, I'm new at this board-designing stuff. :/
Anyway, it looks like I could maybe hack around mistake #1 by
using an I2C bit-banging library, at least to do some testing of the
rest of the board, but it's going to be a bit of work.
So before I get into that, my QUESTION for y'all is: am
I doomed to failure anyway because of mistake #2?
And should I therefore give up on this board and just
get started on the next one?
Yrs noobishly,
-mykle-
p.s. I maybe also made mistake #3 when I only used one of
the two decoupling caps shown in the datasheet for the acc.
Actually I was copying the schematic of the Teensy Prop Shield,
figuring Paul knows what he's doing. In retrospect, adding
that 10-cent part would have give me one less thing to worry about ...
I just figured out that I made a couple of extra-dumb mistakes in this board I designed.
Mistake #1: I ran the i2c pins from my Teensy 3.2 to my accelerometer backwards! Clock is data, data is clock. D'oh!
Mistake #2: I neglected to add pullup resistors on the i2c lines.
Sorry, I'm new at this board-designing stuff. :/
Anyway, it looks like I could maybe hack around mistake #1 by
using an I2C bit-banging library, at least to do some testing of the
rest of the board, but it's going to be a bit of work.
So before I get into that, my QUESTION for y'all is: am
I doomed to failure anyway because of mistake #2?
And should I therefore give up on this board and just
get started on the next one?
Yrs noobishly,
-mykle-
p.s. I maybe also made mistake #3 when I only used one of
the two decoupling caps shown in the datasheet for the acc.
Actually I was copying the schematic of the Teensy Prop Shield,
figuring Paul knows what he's doing. In retrospect, adding
that 10-cent part would have give me one less thing to worry about ...