Another query, not specifically about SDK, so feel free to direct me to another venue if inappropriate. Anyway, I've been trying to talk to the Pixy with one of my Arduinos. Worked like a charm using the special SPI cable, but no love going directly from the I^2C or UART pins. I even ran a little I^2C sniifer sketch, and got "no devices found".
Double-checked the SDL/SCA connection, tried new jumpers, even flashed current firmware from
cmucam.org.
I^2C is especially important to my application (drones), because my goal is to have the Pixy talk to the flight controller over I^2C.
I dunno .. maybe pullup resistors needed? Couldn't tell from the
wiki entry.