Prototyping Workshop

This repository contains some material of my "Physical Prototyping" workshop.

In the workshop I use a Raspberry Pi and Node-RED to show how easy it is to prototype hardware interactions.

• Send push messages
• Read Temperature and Humditiy
• Detecht a putton press
• Control a remote power plug
• Control a LED
• Build your own remote control (using Blynk)
• Talk to the Pi (via Alexa)
• Chat with the Pi (via Telegram)
• Get weather information (via OpenWeatherMap)

You can view a subset of the workshops slides here.
In addition, you can find some basic information to get you started below.

Things You Need

Hardware Components

• Raspberry Pi Zero WH & case
• mini USB cable and power adapter
• a mini breadboard
• jumperwire set
• DHT11 Temperature Sensor
• 433Mhz Transmitter & Receiver
• pushbutton
• 5mm neopixel LED (or a clone, e.g. WS8212, WS8211, PD9823, ...)

Note: Above are just sample links, I'd try to order most material from China to reduce the cost (with the exception of the Pi). The resulting total cost is around 30€.

Software

• SD Card Burner: Etcher or ApplePi Baker for Mac
• Terminal Manager: puTTY for Windows or iTerm for Mac
• IP Scanner: Angry IP Scanner or IP Scanner Home for Mac

other things

• the SD card with the flashed image
• your credentials
  • your pi name: protopi[nn].local
  • login: pi | pipapo

Note: The SD card contains a an image of Raspian, the Linux operating system for the Raspberry Pi, with some additions to it (SSH and headless mode is enabled, additional Pi nodes are installed, file access (SAMBA) is activated, etc.).

Getting Started

Access your PI through USB

1. Connect you Pi to your computer Note: You need a "good" USB cable, one that you can sync your phone with

2. Follow the instructions for Mac or Windows
   Note: They also teach you how to use the Terminal, so give it a read

3. Learn some additional commands for the command line

Share your Internet Connection with the Pi (through USB)

• Follow these steps for the Mac and share the connection for the "RNDIS/Ethernet Gadget" (thats your the name of your Pi)
• For Windows follow the steps described here

Add WiFi Credentials to the Pi

• Follow these steps
• Close the editor (CTRL + x and confirm with "y")
• To restart the Pi, type sudo reboot -h now in the console

Is your Pi Online?

• You can either use your pi's name (protopi[nn].local) or its IP address
• Type ping protopi[nn].local in the Terminal (Mac) or on the command line (Windows)
• You should get a result with a time attaced to it, e.g.:
  64 bytes from 128.65.210.8: icmp_seq=1 ttl=59 time=14.428 ms
• There you can also see the IP address of your Pi

Access to Node-RED

• Enter http://protopi[nn].local:1880 in the browser (Firefox or Chrome, please)
• You should find the Pushover flow, please remove my credentials and start tinkering

Links and Resources

Links

• Pi Documentation

• Pi Operating System

• Pi Zero Overview

• Node-Red

• MagPi Magazine

  • Raspberry Pi Beginners Book
  • 10 Raspberry Pi Projects You Must Make
  • Pi Zero Projects
  • Raspberry Pi Projects Book - Volume 2
  • Conquer the Command line

• Make: Magazin - Node Red Intro (German)

• GPIO Pins Overview

Introduction to Node-RED