Wireless Workshop
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
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
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
What you need to do to be able to program the ESP32 with the Arduino IDE >> http://hyperdramatik.net/mediawiki/index.php?title=ESP32_mit_Arduino
Nice ESP32 Devboard 38pin documentation >> https://www.studiopieters.nl/esp32-pinout/
Some important infos about the ESP:
ADC 2 pins don't work when using wifi
analogWrite function does not work?
mistake GND pin is CMD pin!
OSC & Arduino
OSC + Arduino >> http://hyperdramatik.net/mediawiki/index.php?title=OSC_in_Arduino
Sending data from ESP to Processing
Sending data from Processing to ESP
Arduino code for printing IP address of ESP32:
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
Sending data from ESP to ESP
OSC & Processing
OSC + Processing >> http://hyperdramatik.net/mediawiki/index.php?title=OSC_in_Processing
OSC & Unity
OSC + Unity >> http://hyperdramatik.net/mediawiki/index.php?title=OSC_in_Unity
OSC & vvvv
OSC + vvvv >> https://github.com/clockdiv/Spaghettimonster (example code from Julian)
MQTT
MQTT Brokers http://hyperdramatik.net/mediawiki/index.php?title=MQTT_Brokers
MQTT Clients:
Arduino: Shiftr.io Arduino MQTT library: "MQTT by Joel Gaehwiller” >> http://hyperdramatik.net/mediawiki/index.php?title=MQTT_in_Arduino
Processing: Shiftr.io Processing MQTT library: "MQTT library for Processing based on the Eclipse Paho project by Joel Gaehwiller” >> http://hyperdramatik.net/mediawiki/index.php?title=MQTT_in_Processing
BLE
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