Expansion Shield X400 for Raspberry Pi B+/2B/3B/4B (DFR0449)
Discontinued Raspberry Pi audio HAT using a TI PCM5122 32-bit/384 kHz DAC (playback up to 24-bit/192 kHz, 112 dB SNR), TI TPA3118D2 Class-D amplifier (2×20 W into 4 Ω), and TI TPA6133A headphone amp. Accepts 6–24 V DC; outputs via RCA, 3.5 mm jack, and speaker terminals.
Pinout
- 40-pin GPIO (passthroughused)Type · Signal
- DAC outputsType · Signal
- Amplifier outputsType · Signal
- HeadphoneType · Signal
- Power inputType · Power
- GNDType · Ground
- 5V3.3V railsType · Power
| Pin | Type |
|---|---|
| 40-pin GPIO (passthroughused) | Signal |
| DAC outputs | Signal |
| Amplifier outputs | Signal |
| Headphone | Signal |
| Power input | Power |
| GND | Ground |
| 5V3.3V rails | Power |
Pin details
7 connections- 40-pin GPIO (passthroughused)Signal
- DAC outputsSignal
- Amplifier outputsSignal
- HeadphoneSignal
- Power inputPower
- GNDGround
- 5V3.3V railsPower
Start wiring
Shield
Verify supply voltage and logic levels before powering up.
Module pins: Power input, 5V/3.3V rails, GND, 40-pin GPIO (passthrough/used), DAC outputs, Amplifier outputs, Headphone. Schematik maps them to your board in the app.
Add-ons
269 other optionsAbout 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.
15x7 CharliePlex LED Matrix FeatherWing - Cool White visual preview15x7 CharliePlex LED Matrix FeatherWing - Cool White
15x7 CharliePlex LED Matrix FeatherWing - Warm White visual preview15x7 CharliePlex LED Matrix FeatherWing - Warm White
16-Ch High Current Driver Shield Kit v2 visual preview16-Ch High Current Driver Shield Kit v2
19V 90W AC/DC Adapter for LattePanda Mu Full-Function EVA Carrier Board visual preview19V 90W AC/DC Adapter for LattePanda Mu Full-Function EVA Carrier Board
1Sheeld+ for iOS and Android visual preview1Sheeld+ for iOS and Android
2-Channel Isolated CAN Bus HAT+ for Raspberry Pi, Stackable visual preview2-Channel Isolated CAN Bus HAT+ for Raspberry Pi, Stackable
2-Channel Isolated CAN FD HAT for Raspberry Pi visual preview2-Channel Isolated CAN FD HAT for Raspberry Pi
2-Channel Isolated CAN HAT for Raspberry Pi, MCP2515 + SN65HVD230 visual preview2-Channel Isolated CAN HAT for Raspberry Pi, MCP2515 + SN65HVD230
2-Channel Isolated RS485 HAT for Raspberry Pi visual preview2-Channel Isolated RS485 HAT for Raspberry Pi
2-DOF Pan-Tilt HAT for Raspberry Pi visual preview2-DOF Pan-Tilt HAT for Raspberry Pi
3-Channel Relay Expansion Board for Jetson Nano, Optocoupler Isolated visual preview3-Channel Relay Expansion Board for Jetson Nano, Optocoupler Isolated
3Dpad Touchless Gesture Controller Arduino Shield visual preview3Dpad Touchless Gesture Controller Arduino Shield
Related groups
4 groups
10 I/Os PLC Module - CPU Arduino Nano (Optoisolated Output) visual previewArduino
About 75 boards across every Arduino generation: 5V Uno/Mega/GIGA, 3.3V MKR and Portenta, plus DFRduino and Bluno compatibles. Confirm the voltage rail before stacking any shield.
Boards · Arduino boards · 77 parts
10 I/Os Relay Module - CPU ESP32 (Relay Output) visual previewESP32
Wi-Fi and Bluetooth on a single chip, in every shape from Espressif DevKitC to Adafruit Feathers with STEMMA QT, DFRobot FireBeetles tuned for battery life, and Seeed XIAOs under a thumbnail.
Boards · ESP32 boards · 159 parts
16-Ch Servo Driver Breakout for micro:bit, I2C visual previewOther MCUs
Specialists: Teensy for high-clock audio and USB, Adafruit SAMD boards running CircuitPython or the Arduino IDE, proper STM32 eval kits, and the micro:bit classroom ecosystem. Schematik builds target ESP32, Arduino Uno, and Pico; come here when you have a specific reason to.
Boards · Other MCU boards · 229 parts
Adafruit DVI Breakout Board for HDMI Source Devices visual previewPi Pico
The Raspberry Pi MCU line — Pico, Pico 2, and third-party boards on the same silicon — plus a deep bench of Pico-pinout displays, loggers, and radio modules that do nothing without a Pico plugged in.
Boards · Pico & RP2040 boards · 43 parts