USOUND HELIKE 1.0 UA-E3010

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Summary

FEATURES

CREATING A HELIKE 1.0 UA-E3010 CONFIGURATION FILE

CUSTOMIZE A HELIKE 1.0.JSON FILE

Configure acoustic response using JSON files, tuning response with four blocks.

FILTER CONFIGURATION

Implement digital biquadratic filters using feedforward and feedback coefficients.

DRC CONFIGURATION

Utilize built-in dynamic range compressor with leveler and limiter settings.

CONVERT JSON FILE TO.BIN FILE

Convert JSON configuration files to .bin format for MicroSD card usage.

PLACE FILE ON MICROSD CARD AND SET DIP SWITCHES

Copy .bin files to MicroSD for loading configuration at startup.

INTERFACES

JOYSTICK

Control volume and playback in SD card mode; adjusts volume in I2S mode.

BUTTONS

System reset via SW1; enter DFU mode via SW3 for firmware updates.

LEDS

Four LEDs indicate audio frame status, volume/mute, MicroSD card presence, and I2C failures.

FIRMWARE UPDATE

UPDATE VIA USB-C PORT

Update firmware using DfuSe software via USB-C connection.

FIRMWARE UPDATE TROUBLESHOOTING

Addresses issues like device not being detected by DfuSe software.

UPDATE VIA SWD INTERFACE

Use SWD for personalized firmware programming and debugging.

TROUBLESHOOTING

.WAV AUDIO REPRODUCTION

Troubleshoot .wav file playback issues on MicroSD card.

ACOUSTIC CANCELLATION ON LEFT CHANNEL IN A TWO-WAY SPEAKER SYSTEM

Addresses potential acoustic cancellation due to DAC polarity inversion.

EQUALIZATION FILTER IMPLEMENTATION EXAMPLE

Example of generating and copying biquad filter coefficients for acoustic tuning.

OVERVIEW

REQUIRED ADDITIONAL PARTS

BEFORE GETTING STARTED

PCB LAYOUT

TOP LAYER

Shows component placement and supply jumpers on the top layer of the PCB.

BOTTOM LAYER

Illustrates component placement on the bottom layer of the PCB.

SUPPLYING THE HELIKE 1.0 UA-E3010 BOARD

USB SUPPLY

Supplies power via the USB-C connector, configured as USB slave.

EXTERNAL 36 V SUPPLY

Powers the board using a 36 V input via the barrel connector, suitable for Dione Maxi.

EXTERNAL 5 V

Powers the board using a 5 V input via the barrel connector, mandatory for Dione Mini.

5 V SUPPLY FROM EXPANSION HEADER

Supplies 5 V power from the Raspberry Pi expansion header.

AUDIO INPUT CONFIGURATION

STANDALONE MODE

Generates I2S clocks internally; audio input via USB or MicroSD card.

SLAVE MODE

Receives I2S audio data and clocks from an external source like Raspberry Pi.