# Case 12: Remote Control the Cutebot with micro:bit Accelerometer

## Purpose
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- Use the accelerometer in another micro:bit to remote control the [Cutebot](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-cutebot-kit-without-micro-bit-board?_pos=1&_sid=4c6909119&_ss=r) for the direction and speed.
- Both of the micro:bit need to be programmed.

## Materials 
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- 1 x [Cutebot Kit](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-cutebot-kit-without-micro-bit-board?_pos=1&_sid=4c6909119&_ss=r)
- 1 x [micro:bit](https://www.elecfreaks.com/microbit_edu.html)

## Software Platform 
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[MicroSoft makecode](https://makecode.microbit.org/#)

## Programming
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### Step 1

- Click the "Advanced" to see more choices in the MakeCode drawer.

![](./images/cutebot-pk-1.png)

- A codebase is required for [Cutebot](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-cutebot-kit-without-micro-bit-board?_pos=1&_sid=4c6909119&_ss=r) programming, click “Add Package” at the bottom of the drawer, search `Cutebot` in the dialogue box and download it.

![](./images/cutebot-pk-11.png)

***Note:*** If you met a tip indicating incompatibility of the codebase, you can continue with the tips or build a new project there.

### Step 2: Remote Control Programming

- Set "radio set group" to `1` in the `On start` brick.
- Set `x` whose value is given by "acceleration (mg) x" exactly divides `10` to the radio value in `forever` brick.
- Set `y` whose value is given by "acceleration (mg) y" exactly divides `10` to the radio value in `forever` brick.
- The scope of the acceleration value is `0`~`1024` , which can be regarded roughly as the speed value in `0`~`100` after dividing `10`. 

![](./images/case_12_01.png)

### Programming

Links: [https://makecode.microbit.org/_Pv01m2ehfcKT](https://makecode.microbit.org/_Pv01m2ehfcKT)

You can also download it directly below:

<div style="position:relative;height:0;padding-bottom:70%;overflow:hidden;">
<iframe style="position:absolute;top:0;left:0;width:100%;height:100%;" src="https://makecode.microbit.org/#pub:https://makecode.microbit.org/_Pv01m2ehfcKT" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin">
</iframe>
</div>  

### Step 3: [Cutebot](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-cutebot-kit-without-micro-bit-board?_pos=1&_sid=4c6909119&_ss=r) Programming

-  Set the "radio set group" to `1` in the `On start` brick. Items must be the same with the remote control for the correct match.
- Drag two "if" bricks into the `on radio received` brick and judge if the radio revived value `name` is `x` or `y`
- If the radio received value `name` is `x`, it is the data for `X` and then save the `value` in the variable `xValue`.
- If the radio received value `name` is `y`, it is the data for `y` and then save the `value` in the variable `yValue`.
- In `forever` brick, set the left wheel speed to `yValue`+`xValue` and right wheel speed to `yValue`-`xValue`.

![](./images/case_12_02.png)

### Programming

Links: [https://makecode.microbit.org/_VYxbiCVtE962](https://makecode.microbit.org/_VYxbiCVtE962)

You can also download it directly below:

<div style="position:relative;height:0;padding-bottom:70%;overflow:hidden;">
<iframe style="position:absolute;top:0;left:0;width:100%;height:100%;" src="https://makecode.microbit.org/#pub:https://makecode.microbit.org/_VYxbiCVtE962" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin">
</iframe>
</div>  

## Result
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- The moving direction of the [Cutebot](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-cutebot-kit-without-micro-bit-board?_pos=1&_sid=4c6909119&_ss=r) is controlled by the tilt degree of the micro:bit. 
- The tilt angle of the controlling micro:bit controls the speed of the [Cutebot](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-cutebot-kit-without-micro-bit-board?_pos=1&_sid=4c6909119&_ss=r).

## Exploration
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## FAQ
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## Relevant Files
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