MG90S Servo Motor (360° Continuous Rotation)

import servo	# Controls the servo motor
import time	# Controls pauses and timing

# Commands the continuous servo connected to pin 26
# pin26 corresponds to D2 on the Sensor Shield V5.0

print("Launch!")	# The announcement
servo.servo360_speed(26, 100)	# Full speed, one direction
print("Speed: 100 spinning!")	# Narrate the state
time.sleep(2)	# Two seconds of spinning
servo.servo360_speed(26, 0)	# The COMMANDED stop
print("Speed: 0 stopped.")	# Narrate the calm

💡 Note: look at the difference from every motor so far this one keeps spinning between your commands. You didn't hold a pin HIGH; you gave one order and the servo obeyed continuously. That is why the stop command matters so much: without speed 0, it would run until the program ends. From this module on, every motor program you write should end with a stop make it a reflex.

import servo	# Controls the servo motor
import time	# Controls pauses and timing

# Commands the continuous servo connected to pin 26
# pin26 corresponds to D2 on the Sensor Shield V5.0

print("Positive test: speed 100")	# Test one
servo.servo360_speed(26, 100)	# Positive full speed
time.sleep(2)	# Watch which way it turns!
servo.servo360_speed(26, 0)	# Stop
time.sleep(1)	# A pause to write down the result
print("Negative test: speed -100")	# Test two
servo.servo360_speed(26, -100)	# NEGATIVE full speed
time.sleep(2)	# Watch the other way!
servo.servo360_speed(26, 0)	# Stop
print("Write your table: +100 = ?, -100 = ?")	# The detective's homework

Serial Monitor: 

Positive test: speed 100 

Negative test: speed -100 

Write your table: +100 = ?, -100 = ? 

💡 Note: fill in the table for YOUR servo for example: +100 spins clockwise, -100 counter-clockwise. Another team's servo might be exactly mirrored! There is no "correct" answer, only documented answers. Professional engineers keep these tables in their notebooks for every motor they ever wire today that habit becomes yours.

import servo	# Controls the servo motor
import time	# Controls pauses and timing

# Commands the continuous servo connected to pin 26
# pin26 corresponds to D2 on the Sensor Shield V5.0

print("=== DEAD ZONE MAP ===")	# The experiment begins
servo.servo360_speed(26, 100)	# Step 1: full speed
print("Speed 100 spinning fast")	# Narrate
time.sleep(2)	# Observe
servo.servo360_speed(26, 50)	# Step 2: half speed
print("Speed 50 still turning?")	# Ask the audience
time.sleep(2)	# Observe
servo.servo360_speed(26, 25)	# Step 3: quarter speed
print("Speed 25 slower now...")	# Narrate
time.sleep(2)	# Observe
servo.servo360_speed(26, 10)	# Step 4: crawling
print("Speed 10 crawling or stopped?")	# The critical question
time.sleep(2)	# Observe carefully
servo.servo360_speed(26, 5)	# Step 5: the whisper
print("Speed 5 probably just humming!")	# The dead zone
time.sleep(2)	# Observe
servo.servo360_speed(26, 0)	# Full stop
print("Write down YOUR lowest turning speed.")	# The homework

💡 Note: your servo's personality card comes from this exercise: the lowest speed that still turns (maybe 20? maybe 8?). Below it: humming, warming, nothing. This is the same dead-zone lesson from the fan (26.3), now measured precisely because a continuous servo is designed for speed, its floor matters in every project: a line-following robot that can't command its slowest reliable speed can't make fine adjustments. Know your floors.

import servo	# Controls the servo motor
import time	# Controls pauses and timing

# Commands the continuous servo connected to pin 26
# pin26 corresponds to D2 on the Sensor Shield V5.0

print("=== THE MIXING MACHINE ===")	# The routine begins
for burst in range(1, 4, 1):	# Three bursts in the positive direction
    print("Mixing burst", burst, "forward")	# Count it
    servo.servo360_speed(26, 80)	# Strong burst
    time.sleep_ms(600)	# Half a second of mixing
    servo.servo360_speed(26, 0)	# Rest between bursts
    time.sleep_ms(400)	# The pause
print("Changing direction...")	# The dramatic turn
for burst in range(1, 4, 1):	# Three bursts in the NEGATIVE direction
    print("Mixing burst", burst, "reverse")	# Count it
    servo.servo360_speed(26, -80)	# The other way!
    time.sleep_ms(600)	# Half a second
    servo.servo360_speed(26, 0)	# Rest
    time.sleep_ms(400)	# Pause
print("Perfectly mixed. Chef's kiss.")	# The ending

💡 Note: the pattern is burst-rest-burst and notice how the pauses between bursts are what make it look intentional, almost professional. The same trick as the heartbeat's darkness (2.4) and the breeze choreography's calm (26.4): silence between actions is part of the action. Real kitchen machines, washing machines and concrete mixers run sequences exactly like this and with a cup of rice and tape, yours really can mix.

import servo	# Controls the servo motor
import time	# Controls pauses and timing
import random	# Controls random numbers

# Commands the continuous servo connected to pin 26
# pin26 corresponds to D2 on the Sensor Shield V5.0

print("=== PRIZE WHEEL ===")	# The game title
print("Press Enter to spin. Type EXIT to quit.")	# The rules
while True:	# Play forever
    cmd = input("Ready? ")	# Wait for the player
    if cmd == "EXIT":	# The quit command
        servo.servo360_speed(26, 0)	# SAFETY: the wheel always stops first
        print("Wheel parked. Casino closed!")	# Farewell
        break	# Leave the loop
    speed = random.randint(60, 100)	# A random launch strength
    servo.servo360_speed(26, speed)	# LAUNCH!
    print("Launched at", speed, "!")	# Narrate the spin
    time.sleep(random.randint(2, 4))	# A random full-speed time
    print("Slowing down...")	# The suspense begins
    for s in range(speed, 0, -10):	# Descend: speed, speed-10 ... toward 0
        servo.servo360_speed(26, s)	# Each step a little slower
        time.sleep_ms(150)	# Savor the deceleration
    servo.servo360_speed(26, 0)	# The final commanded stop
    print("Stopped!")	# The wheel rests
    time.sleep_ms(800)	# Drumroll...
    prize = random.randint(1, 5)	# The prize is chosen by pure random
    if prize == 1:	# Prize one
        print(">>> YOU WIN: +5 POINTS!")	# The reveal
    elif prize == 2:	# Prize two
        print(">>> YOU WIN: A STICKER!")	# The reveal
    elif prize == 3:	# Prize three
        print(">>> YOU WIN: CHOOSE THE NEXT SONG!")	# The reveal
    elif prize == 4:	# Prize four
        print(">>> YOU WIN: 10 JUMPING JACKS!")	# The reveal (for someone else!)
    else:	# Prize five
        print(">>> YOU WIN: THE TEACHER'S RESPECT. Priceless.")	# The reveal

Serial Monitor: 

=== PRIZE WHEEL === 

Press Enter to spin. Type EXIT to quit. 

Ready? 

Launched at 87 ! 

Slowing down... 

Stopped! 

>>> YOU WIN: A STICKER! 

Ready? 

Launched at 64 ! 

Slowing down... 

Stopped! 

>>> YOU WIN: +5 POINTS! 

💡 Note the honest-design secret: attach a cardboard wheel with numbers to the servo horn if you like the spinning looks fantastic. But notice what the program never claims: that it knows where the wheel stopped. It can't! A continuous servo has no position memory (that was Module 28's superpower you traded it away for endless spin). So the prize is declared by random, honestly. Compare your two servos one last time: the SG90 knows where it is; the MG90S knows how fast it goes and each mission was designed around what its motor truly knows. That is engineering maturity: build on what the hardware really knows, never on what you wish it knew. The motor family is complete: power (TT), position (SG90), speed (MG90S). Next stop the air itself carries your commands: infrared, Bluetooth, Wi-Fi, and robots talking to robots.