# Code ## @description code to make the Milky Monster alive ## ~avatar avatar Add code to make the Milky Monster move. ## ~ ## Duration: ~30 minutes ## Step 1: Calibrate servo In order for the Milky Monster to move, the @boardname@ needs to command the servo to go between ``0`` and ``180`` degrees at a certain pace. In the code below: - Press button ``A`` to switch the servo to 180 degrees (to close the mouth of Milky Monster). - Press button ``B`` to switch the servo to 0 degrees (to open the mouth of Milky Monster). ```blocks input.onButtonPressed(Button.A, () => { pins.servoWritePin(AnalogPin.P0, 180) basic.showNumber(180) }) input.onButtonPressed(Button.B, () => { pins.servoWritePin(AnalogPin.P0, 0) basic.showNumber(0) }) basic.showString("calibrate") ``` ## Step 2: Attach rotor The servo should be positioned at 180 degrees **before** attaching the rotor to it. This will make sure the mouth of the Milky Monster is closed once the servo reaches 180 degrees. ## ~ hint You can use a philips screw driver to attach the rotor to the servo. ## ~ https://youtu.be/YZfkMWTeH4o ## Step 3: Check calibration When the user presses ``A`` the servo rotor should be in 'up' position. https://youtu.be/bAqXEawUsSM ## Step 4: Connect cord to rotor Connect the cord to the servo rotor while mouth of Milky Monster is **closed**. https://youtu.be/AWsnwk_iA_A ## Step 5: Connect cables to @boardname@ Connect cables from @boardname@ to the servo and place the battery. https://youtu.be/fAR58GJUZdM ## Step 6: Code light sensor Code the light sensor on the @boardname@ to control the servo. ```blocks basic.forever(() => { pins.servoWritePin(AnalogPin.P0, input.lightLevel()) led.plotBarGraph( input.lightLevel(), 0 ) }) ``` ## Step 7: Ready! Your Milky Monster is ready! https://youtu.be/egl3fNAYylk <br/> ## ~button /projects/milky-monster/connect NEXT: Connect ## ~