Add Spike Essential projects

[laurensvalk]

Need to make instructions and publish code for:

Tic Tac Toe

Balancer

[laurensvalk]

We could also ask @ZPhilo for permission to share his Pybricks Gymnast:

[ZPhilo]

Sure! I can share code and LDraw file...

from pybricks.hubs import EssentialHub
from pybricks.pupdevices import Motor, ColorSensor, ColorLightMatrix
from pybricks.parameters import Button, Color, Direction, Port, Side, Stop, Axis
from pybricks.robotics import DriveBase
from pybricks.tools import wait, StopWatch

hub = EssentialHub()

# Motor order doesn't matter
hipsmotor1=Motor(Port.A)
hipsmotor2=Motor(Port.B,Direction.COUNTERCLOCKWISE)

# Set capabilities well above physical limits to maximize power/speed
maxspeed=1000
hipsmotor1.control.limits(maxspeed,8000)
hipsmotor2.control.limits(maxspeed,8000)

# This hips angle provides a good match with natural period of pendulum
hipsangle=55
wait(1000)
while True:
    # Wait till we are on top of swing
    while hub.imu.angular_velocity(Axis.X)>0:
        continue
    # Then rotate legs
    hipsmotor1.run_target(maxspeed,hipsangle,wait=False)
    hipsmotor2.run_target(maxspeed,hipsangle)
    while hub.imu.angular_velocity(Axis.X)<0:
        continue
    hipsmotor1.run_target(maxspeed,-hipsangle,wait=False)
    hipsmotor2.run_target(maxspeed,-hipsangle)

gymnast.mpd.txt

[laurensvalk]

Thank you @ZPhilo !