# Case 14: Remote Control with Joystick:bit ## Purpose --- - Programme to control the TPBot with the Joystick:bit. ## Material --- - 1 x [TPBot](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-tpbot-car-kit-without-micro-bit-board?_pos=1&_sid=f32828112&_ss=r) ![](./images/TPBot_tianpeng_case_01_01.png) ## Software --- [MicroSoftmakecode](https://makecode.microbit.org/#) ## Programming --- - Click "Advanced" to see more choices in the MakeCode drawer. ![](./images/TPBot_tianpeng_case_01_02.png) - We need to add a package for programming. Click "Extensions" in the bottom of the drawer and search with "tpbot" in the dialogue box to download it. ![](./images/TPBot_tianpeng_case_01_03.png) - We need to add a package for programming the Joystick also. Click "Extensions" in the bottom of the drawer and seach with "joystick" in the dialogue box to download it. ![](./images/TPBot_tianpeng_case_14_03.png) ### Sample ### Remote Control Part - Set the radio group as 1. - Judge the value of x&y of the Joystick in the forever brick, if the value of the x is below 200, radio send number 4; if the value of the x is over 800, radio send number 3; if the value of the y is below 200, radio send number 2; if the value of the y over 800, radio send number 1; or radio send number 0. ![](./images/TPBot_tianpeng_case_14_04.png) ### Link - Link: [https://makecode.microbit.org/_7rzb5TEfrbu7](https://makecode.microbit.org/_7rzb5TEfrbu7) - You may also download it directly below:
### Receiving Part - Set the radio group as 1. - Save the received number as the variable in "on radio received..."block. - Judge if the value is 1, if yes, set the TPBot moving forward at the speed of 100%; if it's 2, set the TPBot reversing at the speed of 50%; if it's 3, set the TPBot turning left at the speed of 50%; if it's 4, set the TPBot turning right at the speed of 50%; If it's 0, set the TPBot to stop. ![](./images/TPBot_tianpeng_case_14_05.png) ### Link - Link: [https://makecode.microbit.org/_HPVCEx29zTPx](https://makecode.microbit.org/_HPVCEx29zTPx) - You may also download it dorectly below: ### Conclusion - The movement of the TPBot is controlled via the Joystick:bit. ## Exploration --- ## FAQ --- Q: The car does not work with the code in the wiki. A: It should be the batteries that are lack of power, please try to fix it by adding the value of the speed in the code. ## Relevant File ---