# Yellow LED(EF05012) ## Introduction Yellow LED is usually used as the indicator. ![](./images/05012_01.png) ## Products Link [ELECFREAKS PlanetX LED-Yellow](https://shop.elecfreaks.com/products/elecfreaks-planetx-led-yellow?_pos=1&_sid=03c7379d1&_ss=r) ## Characteristic Designed in RJ11 connections, easy to plug. ## Specification | Item | Parameter | | :----------------: | :------------: | | SKU | EF05012 | | Connection | RJ11 | | Type of Connection | Analog input | | Working Voltage | 3.3V | | Size | 55.8 x 23.8 mm | ## Outlook ![](./images/05012_02.png) ## Quick to Start ### Materials Required and Diagram Connect the Yellow LED to J1 port and the potentiaometer to J2 port in the Nezha expansion board as the picture shows. ![](./images/05012_03.png) ## MakeCode Programming ### Step 1 Click "Advanced" in the MakeCode drawer to see more choices. ![](./images/05001_04.png) We need to add a package for programming, . Click "Extensions" in the bottom of the drawer and search with "PlanetX" in the dialogue box to download it. ![](./images/05001_05.png) ***Note:*** If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu. ### Step 2 ### Code as below: ![](./images/05009_06.png) ### Link Link: [https://makecode.microbit.org/_eTHcUiPhjLpz](https://makecode.microbit.org/_eTHcUiPhjLpz) You may also download it directly below:
### Result The brightness is adjusted by the potentiometer. ## Python Programming ### Step 1 Download the package and unzip it: [PlanetX_MicroPython](https://github.com/lionyhw/PlanetX_MicroPython/archive/master.zip) Go to [Python editor](https://python.microbit.org/v/2.0) ![](./images/05001_07.png) We need to add enum.py and led.py for programming. Click "Load/Save" and then click "Show Files (1)" to see more choices, click "Add file" to add enum.py and led.py from the unzipped package of PlanetX_MicroPython. ![](./images/05001_08.png) ![](./images/05001_09.png) ![](./images/05009_10.png) ### Step 2 ### Reference ``` from microbit import * from enum import * from led import * led = LED(J1) while True: led.set_led(1,100) sleep(1000) led.set_led(1,50) sleep(1000) led.set_led(0,50) sleep(1000) ``` ### Result LED lights on in 100% brightness for one second and 50% brightness for another sencond and lights off for one second after powering on and it continues working in this way. ## Relevant File ## Technique File