Node-RED introduction: Difference between revisions
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* Run the program by selecting Run > Run module. | |||
* The program will send output to the Python Shell. | |||
* A typical output in the Shell is presented below. | |||
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Revision as of 04:45, 31 December 2021
Overview
- The aim of this lesson is to start learning to use Node-RED which is a block-based programming language.
- The appeal of Node-RED is that individual code segments are hidden in nodes.
- Individual nodes can be connected using wires.
- This makes the program much easier to visualise and program.
Learning Objectives
- Learn how to start node-red on the Raspberry Pi.
- Learn how to run Python programs in Node-RED.
Introduction to Node-RED on the raspberry Pi
- Node-RED is a powerful and intuitive programming language pre-installed on the Raspberry Pi.
- This lesson will serve as an introduction to the use of this platform.
- In this lesson we will learn how to execute python programs.
Run the python file peter_hopper_get_data.py
- From the main Raspberry Pi menu navigate to Programming and open Python3 IDLE
- Open the saved file peter_hopper_get_data.py
- The full listing is below.
- Run the program by selecting Run > Run module.
- The program will send output to the Python Shell.
- A typical output in the Shell is presented below.
