Introduction

My name is Ryosuke Kamei and I am an IT consultant based on the idea of "gentle IT"! Currently, in my work, I am doing upstream processes focusing on requirements analysis and requirements definition, but I also write programs! As part of friendly IT activities, "Raspberry Pi 3 (commonly known as Raspberry Pi)" with the idea of "providing a PC that can be programmed for education at a low price", so there is Node-RED that can be programmed with GUI for education, so I will introduce it. To do! In addition, I will also introduce the settings for developing with Python!

● Purpose

Install Node-RED that can be programmed with GUI
Preparation for programming with python

Install python package manager pip and dev Install WiringPi for GPIO control

1. Install Node-RED that can be programmed with GUI

Since the idea of Raspberry Pi is "to provide a PC that can be programmed for education at a low price", there is an application called Node-RED so that programming can be done with GUI. It seems that it is already installed on Raspberry Pi 3 (as of July 3, 2016), but I have listed it just in case. (Installed on the latest version of Raspberry Pi)

Preparing video

1.1 Installation

`Node-RED installation`


$ sudo apt-get install nodered

1.2 Start Node-RED

`Node-RED start`


$ node-red-start

1.3 Access with a browser

Open your browser and go to "http://127.0.0.1:1880/" You can program with GUI! The programming language seems to use Node.js!

2. Preparation for programming with python

As Node-RED touches when teaching children, I would like to program normally to light LEDs and turn motors. I use a programming language called Python, and it seems convenient to have a package manager pip, so I will install it. Install WiringPi for GPIO (general purpose input / output control).

2-1. Install python3-dev python3-pip

`python3-dev python3-install pip`


$ sudo apt-get install python3-dev python3-pip

2-2. Install Wiring Pi2 using pip3

`Install Wiring Pi2 using pip3`


$ sudo pip3 install wiringpi2

`Operation check`


$ sudo python3

The contents of () are not actually displayed.

`Python`


>>> import wiringpi
(No error displayed)
wiringpi.piBoardRev()
2 (only displayed as ← 2)

What I used

Raspberry Pi 3 main unit 5,980 yen Raspberry Pi official 7 inch touch screen display 11,330 yen Note It is OK if you have a liquid crystal display or a TV with an HDMI terminal. I just don't have it at home ... crying [Sanwa Supply USB Keyboard (Black) SKB-L1UBK 496 Yen](http://www.amazon.co.jp/gp/product/B005LL9J9G/ref=as_li_ss_tl?ie=UTF8&camp=247&creative=7399&creativeASIN=B005LL9J9G&linkCode=as2&tag=sr2smail twenty two) USB mouse What was at home ... SD card What was at home ... Razpai Magazine June 2016

site map

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[PYTHON] Programming normally with Node-RED programming on Raspberry Pi 3