# Case 12: Remote Control the Cutebot with micro:bit Accelerometer ## Purpose --- - 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 --- - 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 --- [MicroSoft makecode](https://makecode.microbit.org/#) ## Programming --- ### 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:
### 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: ## Result --- - 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 --- ## FAQ --- ## Relevant Files ---