pxt-calliope/docs/projects/milky-monster/code.md
Peli de Halleux f041324388 outline of milkjmonster lesson (#372)
* outline of milkjmonster lesson

* Inital version Milky Monster ready to publish on Github - can you please review Peli ?

* removing "radio" project

* various fixes

* updated summary

* Adding croc to male option

* commit changes

* fixed missing pdf

* fixing broken image link

* fixing servo page

* fixing markdown

* Fixing step1

* commit changes

* merging

* merge

* changed milk-monster to milky-monster

* reized image
2017-03-20 15:17:24 -07:00

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Markdown

# 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:
- the user pressed button ``A`` to switch the servo to 180 degrees (to close the mouth of Milky Monster).
- the user pressed 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 on 180 degrees **before** attaching the rotor to it. This is to make sure the mouth of the Milky Monster will be closed once the servo reaches 180 degrees.
### ~ hint
You may use a philips scew driver to attach the rotor to the servo.
### ~
https://youtu.be/YZfkMWTeH4o
## Step 3: check calibration
When the user pressed ``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 lightsensor on the @boardname@ to control the servo.
```blocks
basic.forever(() => {
pins.servoWritePin(AnalogPin.P0, input.lightLevel())
led.plotBarGraph(
input.lightLevel(),
0
)
})
```
## Step 6: Ready!
Your Milky Monster is ready!
https://youtu.be/egl3fNAYylk
### ~button /projects/milky-monster/connect
NEXT: Connect
### ~