IQaudio Pi-CodecZero Audio HAT

The Codec Zero HAT is a Raspberry Pi Zero-sized board but it also includes the HAT’s EEPROM allowing for auto-configuration of the Linux environment if needed.

The Codec Zero HAT delivers bi-directional digital audio signals (I2S) between the Raspberry Pi and onboard Dialog Semiconductor DA7212. It supports a range of input and output devices from a built-in MEMS microphone, mono Electret microphone or mono speaker (1.2W / 8Ω).

It also has GREEN (GPIO23) and RED (GPIO24) LEDs, that can be used for status and a tactile button (GPIO27) that can be used to start an event.

It is compatible with:

• Raspberry Pi Zero

The Pi-CodecZero makes a great starting point for a walkie talkie / intelligent doorbell, vintage radio hack or Smart type speaker.

• Raspberry Pi Zero-sized HAT compliant accessory; EEPROM, mounting holes
• No soldering required, just stack on to the Raspberry Pi board (that has 40-pin GPIO)
• Integrated hardware volume control (via ALSA)
• Single power from the Raspberry Pi board, no additional power needed.
• Linux driver support already delivered within Raspberry Pi OS (a.k.a: Raspbian)
• Integrated, onboard MEMS Mic and additional 3.5mm Audio Jack for Mono (Electret) Mic input
• Breakout of Stereo AUX Input and Output, additional soldering is required
• Screw Terminal for 1.2Watt 8Ω, Mono Speaker
• Extended GPIO for better Human Machine Interface:
  • Power LED
  • Green LED - GPIO23
  • Red LED - GPIO24
  • Tactile Button - GPIO27
• Advanced ESD protection
• Uses the digital I2S audio signals to reduce CPU load over USB audio solutions
• Fully built and tested Raspberry Pi accessory
• Designed IQaudIO and now manufactured by Raspberry Pi Foundation

• 1 x IQaudio Pi-CodecZero Audio HAT
• 4 x Brass spacer with screw/bolt

• IQaudIO Product User's Manual
• Additional driver installation, Github
• Players:
  • RuneAudio
  • Volumio
  • Moode
  • PiCorePlayer
  • Max2Play
  • Pi MusicBox, works on an older model of Raspberry Pi, except Raspberry Pi 4 Model B
  • OpenELEC