26. 7-Seg LED Nixietube

26.1. Introduction

It is able to display the numbers and time and so on.

26.2. Characteristic

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• Designed in RJ11 connections, easy to plug.

26.3. Specification

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Item	Parameter
SKU	EF05026
Connection	RJ11
Type of Connection	Digital input
Working Voltage	3.3V
Core IC	TM1637

26.4. Outlook

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26.5. Quick to Start

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Materials Required and Diagram

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• Connect the 7-Seg LED Nixietube to J1 port in the Nezha expansion board as the picture shows.

26.6. MakeCode Programming

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Step 1

Click “Advanced” in the MakeCode drawer to see more choices.

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.

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:

Link

Link: https://makecode.microbit.org/_7tmRmJ2c4Khw

You may also download it directly below:

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Result

• Set it display 12.34.

26.7. Python Programming

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Step 1

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor

We need to add enum.py and nixietube.py for programming. Click “Load/Save” and then click “Show Files (1)” to see more choices, click “Add file” to add enum.py and nixietube.py from the unzipped package of PlanetX_MicroPython.

Step 2

Reference

from microbit import *
from enum import *
from nixietube import *

tm = NIXIETUBE(J1)
n = 0
while n < 10000:
    tm.set_show_num(n)
    n += 1

Result

• The numbers from 0~99999 display on the 7-Seg LED Nixietube.

26.8. Relevant File

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26.9. Technique File

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