Raspberry Pi Pico https://www.raspberrypi.com/documentation/microcontrollers/raspberry-pi-pico.html
The "p" version works with 3.3v.
9-axis IMU https://github.com/sparkfun/SparkFun_ICM-20948_ArduinoLibrary/blob/main/DMP.md Accel/Gyro/Compass accuracy is expressed as 0~3. The lowest is 0 and 3 is the highest. 0 - 800 range?? Did not have time to check but my guess is that bits 0 and 1 are for one modality (say accel), then bits 4 and 5 for the next (say gyro) and 8 and 9 for the last (say compass)? Not sure about the position of the bits used (seems reasonnable to space every 4 bits).
int16_t Accuracy;
higher seems better
Start 474 is 00000001 11 01 10 10 432 is 00000001 10 11 00 00 422 is 00000001 10 10 01 10 420 is 00000001 10 10 01 00 419 is 00000001 10 10 00 11 407 is 00000001 10 01 01 11 389 is 00000001 10 00 01 01 373 is 00000001 01 11 01 01 367 is 00000001 01 10 11 11 360 is 00000001 01 10 10 00 365 is 00000001 01 10 11 01 363 is 00000001 01 10 10 11 347 is 00000001 01 01 10 11 346 is 00000001 01 01 10 10 345 is 00000001 01 01 10 01 339 is 00000001 01 01 00 11 333 is 00000001 01 00 11 01 329 is 00000001 01 00 10 01 318 is 00000001 00 11 11 10 317 is 00000001 00 11 11 01 315 is 00000001 00 11 10 11 314 is 00000001 00 11 10 10 308 is 00000001 00 11 01 00 307 is 00000001 00 11 00 11 306 is 00000001 00 11 00 10 304 is 00000001 00 11 00 00 298 is 00000001 00 10 10 10
bias: sparkfun/SparkFun_ICM-20948_ArduinoLibrary#50
- [0] gyro_x
- [1] gyro_y
- [2] gyro_z