Raspberry Pi Codec Zero

The Codec Zero is a Raspberry Pi Zero-sized audio HAT that delivers bi-directional digital audio signals (I2S) between a Raspberry Pi and the Codec Zero’s on-board Dialog Semiconductor DA7212 codec, and allows you to use a variety of input and output devices.

With features such as programmable green and red LEDs, plus a tactile button for user input, Codec Zero makes a great starting point for audio projects such as a walkie-talkie, intelligent doorbell, smart speaker, or vintage radio hack.

The Codec Zero is compatible with any Raspberry Pi computer that has a 40-pin GPIO header.

Features

• Power LED
• Additional green (GPIO23) and red (GPIO24) LEDs for status
• Tactile button (GPIO27) for user input
• Built-in mono electret microphone (MEMS)
• HAT EEPROM write-enabled

Supports

• Additional external mono electret microphone via 3.5mm panel-mounted barrel socket
• 1.2W 8Ω mono speaker via screw terminals
• Stereo input and output channels, including external phono (RCA) sockets, via AUX IN and AUX OUT pins

Specifications

• Form factor: 65 mm × 31 mm
• Performance: High definition 24-bit 96kHz Dialog Semiconductor DA7212 digital audio codec (DAC)
• Input power: Supplied by Raspberry Pi through the 40-pin GPIO header. No external power source required
• Operating temperature: 0°C–50°C

Resources

• Product Brief
• Audio board documentation
• Product number: SC2079/SC0366
• EAN: 0617588405556

Revision History

• As of 16/09/2025 - we are now stocking the rebranded 'green' Codec Zero from Raspberry Pi (previously IQAudio Codec Zero on a black PCB). The updated model uses a terminal block instead of pluggable connectors.