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= Wireless Communication - how does it even work ??? =
= Wireless Communication - how does it even work ??? =


Radio waves!
Radio waves! Radio
 
Frequency modulation vs. amplitude modulation, WiFi uses adaptive modulation
 
https://qph.fs.quoracdn.net/main-qimg-160870a1426502f3700f1c52310d5e56
 
https://radio-waves.orange.com/wp-content/uploads/sites/24/2020/02/schemas_03_en.png
 
 


== Explanation Videos ==
== Explanation Videos ==

Version vom 2. Mai 2022, 13:58 Uhr

Wireless Communication - how does it even work ???

Radio waves! Radio

Frequency modulation vs. amplitude modulation, WiFi uses adaptive modulation

https://qph.fs.quoracdn.net/main-qimg-160870a1426502f3700f1c52310d5e56

schemas_03_en.png


Explanation Videos

How WiFi and Cell Phones Work | Wireless Communication Explained https://www.youtube.com/watch?v=kxLcwIMYmr0

Bluetooth vs WiFi - What's the difference? https://www.youtube.com/watch?v=mPMGRILsOVk

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


Wireless Technologies

hardware + software (protocols)

a selection of common wireless communication technologies:

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

  • 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

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

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

Wireless ranges

3-Figure2-1.png 840px-%D0%9F%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5_LPWAN.png

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


Selecting Hardware

Manufacturers & Distributors

segor >> https://www.segor.de/#Q=ESP32-DevKit&M=1

conrad >> https://www.conrad.de/

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

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

Good Tutorials

heise make magazine >> https://www.heise.de/make/

ESP Make special >> https://www.flickr.com/photos/plusea/sets/72157714270562172/

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

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

New Products 11/10/21 feat. Adafruit ESP32-S2 Feather >> https://www.youtube.com/watch?v=SSHbJ0FhIpo


ESP32 by espressif

In this workshop we will focus on the ESP32 by espressif >> https://www.espressif.com/en/products/socs/esp32

>> https://en.wikipedia.org/wiki/ESP32

history: v1...... ESP32

Why ESP32's Are The Best Microcontrollers https://www.youtube.com/watch?v=A5CB4t9sukM


Different ESP32 boards

ESP32 Devkit, particle, nodeMCU, pycome, bluefruit, feather, SparkFun ESP32 Thing


ESP32 Devboard 38pin version

ESP32 mit Arduino >> http://hyperdramatik.net/mediawiki/index.php?title=ESP32_mit_Arduino

Nice and clean ESP32 Devboard 38pin documentation >> https://www.studiopieters.nl/esp32-pinout/


Libraries

OSC + Unity >> http://hyperdramatik.net/mediawiki/index.php?title=OSC_in_Unity

MQTT Brokers http://hyperdramatik.net/mediawiki/index.php?title=MQTT_Brokers

MQTT Clients:

Arduino: Shiftr.io Arduino MQTT library: "MQTT by Joel Gaehwiller”

Processing: Shiftr.io Processing MQTT library: "MQTT library for Processing based on the Eclipse Paho project by Joel Gaehwiller”

ESP32-BLE-MIDI: An Arduino library to use Midi over Bluetooth Low Energy (BLE) on ESP32 boards >> https://github.com/max22-/ESP32-BLE-MIDI

BLE-MIDI I/Os for Arduino: MIDI over Bluetooth Low Energy (BLE-MIDI) 1.0 for Arduino >> https://github.com/lathoub/Arduino-BLE-MIDI