# Case 76: The Tomato Clock ## Introduction The Tomato Clock is a clock that uses the tomato work method to manage time, helping one to focus and improve efficiency, and is a great aid to work and study. ![](./images/neza-inventor-s-kit-case-76-01.png) ## Case building ### Required equipment [ELECFREAKS micro:bit Nezha 48 IN 1 Inventor's Kit ](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-nezha-48-in-1-inventors-kit-without-micro-bit-board) [ELECFREAKS PlanetX Segment Sensor](https://shop.elecfreaks.com/products/elecfreaks-planetx-segment-sensor?_pos=2&_sid=f9a8632cc&_ss=r) [ELECFREAKS PlanetX Rainbow LED](https://shop.elecfreaks.com/products/elecfreaks-planetx-led-rainbow?_pos=4&_sid=ca220ba80&_ss=r) ### Assembly steps Parts List ![](./images/neza-inventor-s-kit-case-76-02.png) The structure is built as shown in the figure: ![](./images/neza-inventor-s-kit-step-76-01.png) ![](./images/neza-inventor-s-kit-step-76-02.png) ![](./images/neza-inventor-s-kit-step-76-03.png) ![](./images/neza-inventor-s-kit-step-76-04.png) ![](./images/neza-inventor-s-kit-step-76-05.png) ![](./images/neza-inventor-s-kit-step-76-06.png) ![](./images/neza-inventor-s-kit-step-76-07.png) ![](./images/neza-inventor-s-kit-step-76-08.png) ![](./images/neza-inventor-s-kit-step-76-09.png) ![](./images/neza-inventor-s-kit-step-76-10.png) ![](./images/neza-inventor-s-kit-step-76-11.png) ![](./images/neza-inventor-s-kit-step-76-12.png) ### Connection schematic In the diagram below, connect the Dust Sensor to the J1 port and the Motor Fan to the J2 port on the Nezha Board. ![](./images/neza-inventor-s-kit-case-76-04.png) ## Makecode Programming ### Step 1 Click "Extensions" in the MakeCode drawer. ![](./images/neza-inventor-s-kit-case-37-04.png) In order to program the PlanetX sensor, we need to add an extension library. Search with "PlanetX" in the dialog box to download this library. ![](./images/neza-inventor-s-kit-case-37-05.png) *Note: *If you get a prompt saying that some code libraries will be removed for incompatibility reasons, you can either follow the prompt and continue, or create a new project. ### Step 2 ### Write the program as shown in the figure ![](./images/neza-inventor-s-kit-case-76-06.png) ### Reference Program Link: [https://makecode.microbit.org/_AY6FuKHFs6H0](https://makecode.microbit.org/_AY6FuKHFs6H0) You can also download the program directly from the following webpage and start running the program once the download is completed.
### Results Countdown to 25 seconds, the device will play music and lighting effects after the countdown. ![](./images/neza-inventor-s-kit-case-76.gif)