ESP32 FastLED Async Web Server with Audio, AP and STA mode at the same time!

Work in progress ESP32 port of:

• https://github.com/jasoncoon/esp32-fastled-webserver
• https://github.com/jasoncoon/esp8266-fastled-audio
• https://github.com/jasoncoon/esp32-fastled-webserver

Control addressable LEDs with an ESP32 via a web browser over Wi-Fi.

Features

Currently Working:

• DemoReel100 patterns
• MSGEQ7 Integration / Audio
• Static web app file serving from SPIFFS
• Ability to adjust these settings via the HTTP REST API:
  • power on/off
  • brightness
  • pattern
  • autoplay on/off
  • autoplay duration
  • speed
  • palette
  • auto palette cycling
  • palette duration
  • solid color
  • twinkle speed/density
  • fire cooling/sparking
• Setting storage in EEPROM
• AP Mode with Station mode
• for now on AP mode, you need to go to 192.168.1.1/index-ap.htm to load the offline javascript files.

Currently Lacking:

• More Audio Patterns
• Fixed Audio Patterns
• WebSockets for automatically refreshing/syncing web clients
• Bluetooth Port
• Bluetooth and Wifi Port
• AP Mode with Station mode default routing website loading ( index.htm on AP/STA mode)
• Sam's multi-core support
  • Freezing Stopped/ Core dumps.
  • commenting it out removes these issues.
  • issue is in async/Wifi(also exists in Webserver.h) and how fastled and wifi access the core. causes core dumps and other issues.

Requirements

Hardware

• Optional
  • MSGEQ7 for Audio Support. with a microphone
    • Good Starter ESP32_FFT_Audio_LEDs
  • Potentiometer
  • push button

Example circuit.

Ours uses:

• MSGEQ7_AUDIO_PIN 34
• MSGEQ7_STROBE_PIN 26
• MSGEQ7_RESET_PIN 27

https://github.com/debsahu/ESP32_FFT_Audio_LEDs
https://github.com/debsahu/ESP32_FFT_Audio_LEDs

ESP32 Development Board

I used an Esp32 Node32s, the cheap one on amazon.

Adafruit HUZZAH32 – ESP32 Feather Board

or

WEMOS LOLIN D32

or

An ESP32 development board of your choice

Addressable LED strip

Adafruit NeoPixel Ring

Other hardware:

• 3.3V to 5V Logic Level Shifter (required if LEDs "glitch")
• Octo Level Shifter FeatherWing (tidy level shifter PCB)

Recommended by Adafruit NeoPixel "Best Practices" to help protect LEDs from current onrush:

• 1000µF Capacitor
• 300 to 500 Ohm resistor

Software

• Arduino
• ESP32 Arduino Libraries & Tools
• Arduino ESP32 filesystem uploader

Libraries

• FastLED
• samguyer/FastLED uses main FastLED Library
  • sams branches are normally pushed to FastLED master
• ESP32 Arduino Libraries & Tools
• ESP8266/ESP32 WebServer replaced by Async
• ESPAsyncWebServer
  • Async TCP Library for ESP32 need both for ESP32
• OneButton.h

SPIFFS fix

To fix an issue with serving files from SPIFFS over the web server, I used Yves BAZIN's fix here: https://github.com/hpwit/lib

Copy libspiffs.a to the ESP32 tools directory: \Documents\Arduino\hardware\espressif\esp32\tools\sdk\lib\libspiffs.a

And copy esp32fs.jar to the Arduino tools directory: \Documents\Arduino\tools\ESP32FS\tool\esp32fs.jar