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ESP32 Audio Monitor
This is a port of this project to work with any ESP32 device with a TFT display.
You can watch a video explainer here (YouTube) which goes into a bit more detail on the audio capabilities of the device.
You'll need to use PlatformIO to build the project.
To clone the repo use:
git clone --recursive git@github.com:atomic14/esp32-tft-audio-monitor.git
This will make sure you get the TFT library as well.
Hopefully, the code should be easy to understand.
Configuration
All the configuration is located in config.h please update this to match the pins you are using for your microphone.
If you want to use the built in ADC instead of a MEMS microphone then comment out line 16 and connect your analog microphone to pin 32. You will need some kind of microphone amplifier board such as the MAX4466 or MAX9814 from Adafruit.
To modify the code to work with your particular device you will need to change the settings in platformio.ini to match your TFT. The easiest way to do this is to look in the lib/TFT_eSPI/User_Setups for your device and copy the required pre-processor defines.
If you are feeling lazy then you can just copy the setup for you TFT over the User_Setup.h and remove the defines from the build settings.
If you take the lazy option, then remember to remove -DUSER_SETUP_LOADED=1.
; setup for the TTGO T4
-DTFT_WIDTH=135
-DTFT_HEIGHT=240
-DST7789_DRIVER=1
-DCGRAM_OFFSET=1
-DTFT_MISO=-1
-DTFT_MOSI=19
-DTFT_SCLK=18
-DTFT_CS=5
-DTFT_DC=16
-DTFT_RST=23
-DTFT_BL=4
-DTFT_BACKLIGHT_ON=HIGH
-DLOAD_GLCD=1
-DLOAD_FONT2=1
-DLOAD_FONT4=1
-DLOAD_FONT6=1
-DLOAD_FONT7=1
-DLOAD_FONT8=1
-DLOAD_GFXFF=1
-DSMOOTH_FONT=1
-DSPI_FREQUENCY=40000000
-DSPI_READ_FREQUENCY=6000000
Contributing
If you want to add some more visualisations then please open up a pull request and contribute some code.