Wireless Workshop

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Ankündigung: https://www.kobakant.at/DIY/?p=9589 TH 28.4.2022, 11-14:00 (3h) + FR 29.4.2022, 10-15:00 (4h)

This 2-day workshop aims to give an overview of a selection of wireless communication technologies good for sending sensor data between small devices and computers, and provides concrete examples for a subset of the selection. For example how to send data from an Arduino with WiFi or Bluetooth capability to a computer or how to send data between two such Arduinos or also between computers. We will work with protocols such as TCP, OSC, MIDI and MQTT.

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Wireless Technology

Radio waves!

Wi-Fi (2.4/2.5 GHz) - faster, 10xbluetooth distance, more energy

Bluetooth, BLE (Bluetooth Low Energy) (2.4/2.5 GHz) - slower, shorter distance, less energy (good when you need to make something very small)

Zigbee (Mesh Protocol) (2.4/2.5 GHz) - low-power, low data rate, and close proximity

Antenna Cellular (3G/4G/5G) - very high operational costs and power requirements

RFID vs. NFC - RFID can be scanned up to 100m, NFC is limited to small distances

Wireless ranges

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7-layer OSI model

Open Systems Interconnection Model https://www.imperva.com/learn/wp-content/uploads/sites/13/2020/02/OSI-7-layers.jpg.webp

Explanation Videos

How WiFi and Cell Phones Work | Wireless Communication Explained

Bluetooth vs WiFi - What's the difference?

How Does Wi-Fi Work? | Earth Lab https://www.youtube.com/watch?v=xmabFJUKMdg

How Information Travels Wirelessly https://www.youtube.com/watch?v=Ax7dYaRiY6o


Arduino & Wireless Communication

Some Small Wireless Devices

Arduino + WiFi (ESP32 Devboard...) Arduino + Bluetooth/BLE XBee - a family of radio modules

https://www.adafruit.com >> distributors https://www.sparkfun.com/distributors


Some Communication Protocols

Serial TCP OSC MIDI MQTT


Some Arduino Libraries

Glossar

WLAN - Wireless Local Area Network