Official SPIKE App (Servo6)

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Warning

You are reading the official SPIKE App guide, for the SPIKE Prime official software (SPIKE 3) in Python text mode; block coding is not supported. Running Pybricks instead? Switch to the Pybricks guide.

Download the library and example

Official SPIKE App library + example (.zip)

A Python project in the official app cannot hold extra files, so paste the whole content of MBC_servo6_SPIKE_App_Lib.py at the top of your program, then write your own code below it.

How it works (no hub modification)

The expander poses as a SPIKE distance (ultrasonic) sensor: commands go out through the sensor's four light values, and status comes back as the 8 values of device.data(). The official OS keeps resending the last light payload in the background; every command sets a state, so resending is harmless. Each command waits one OS poll period (about 20-50 ms), so driving six servos in a row takes about six periods.

Example

from hub import port
import time
# paste the whole MBC_servo6_SPIKE_App_Lib.py above this line (no import needed)

sv = MBC_SERVO6(port.A)        # expander on Port A

sv.servo_angle(1, 90)          # CN1 to 90°
time.sleep_ms(1000)
sv.servo_angle(1, 0, 10)       # to 0° at 60 °/s
sv.servo_wait(1)
sv.servo_angle(1, 180, 10)
sv.servo_wait(1)
print("CN1 mA:", sv.get_current(1), " total mA:", sv.get_total_current())

sv.servo_run(2, 50)            # CN2 is a 360° servo: half speed forward
time.sleep_ms(2000)
sv.servo_run(2, -50)
time.sleep_ms(2000)
sv.servo_run(2, 0)

print("CN1 stalled:", sv.is_stalled(1), " eFuse fault:", sv.is_power_fault())
sv.stop_all()

Functions

Tip

The official app does not release servos when the program ends (they hold their last position, nothing runs away); call stop_all() at the end if you want them released.