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trajectory_id
int64
0
60.1k
time_step
float64
0
0.3
position
float64
-1.32
169
current_mA
float64
-51.4
639
voltage_V
float64
7.24
8.32
velocity
float64
-2,891.6
2.96k
target_position
float64
-1.23
169
0
0
155.830078
12.4
8.296
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23.642578
End of preview. Expand in Data Studio

Notes about the data:

towerpro_sg90_with_velocity_and_target contains captured sensor data from dirt cheap hobby servo trajectory runs.

  • The servo is not under load and has been paired with a position encoder
  • Power properties have been captured with an INA219 current sensor
  • Each run is 60 samples long and covers 0.3 seconds of time with a 0.005 second (5ms) timestep
  • It has the following fields
    • trajectory_id
      • identifies the run
    • time_step
      • in seconds
      • how far are we into this run
    • position
      • in degrees
      • the current angle of the servo armature at this step of the run
    • current_mA
      • the amount of current the servo is currently using
    • voltage_V
      • the amount of voltage from the battery
    • velocity
      • the current velocity of servo armature in degrees/sec
    • target_position
      • the position we hope to end up at, usually set by a PWM signal sent to the servo
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