Dac
About the Dac PCB
Dac is an open source Raspberry Pi PCB design by naguirre, published on GitHub under the MIT license. It is a 2-layer board measuring 30.1 × 65.1 mm, with 23 components from 17 distinct parts.
Its main chip is the Raspberry_Pi_2_3, from the Raspberry Pi family. Other key parts include the TCXO 49.152 MHz, ES9023 and LP5912-3.3DRV. By type, the board carries 10 capacitors, 6 connectors, 3 ICs, 3 resistors and 1 diode.
It belongs with the iot & wireless and audio designs in this gallery.
From the project
The Manufacture du Son network player is a custom board built around an Allwinner f1c200s SoC running Linux and an ESP32-C3 companion chip providing Wi-Fi and BLE. Audio is routed out over SPDIF. This site documents how to build the firmware, flash it onto a board, and develop on top of it.
KiCad sources and fabrication outputs for a small network audio player board built around an Allwinner F1C200s SoC, an ESP32-C3 for Wi-Fi, NAND flash storage, an EA3036 power management IC, and an audio DAC daughter board.
The repository contains two KiCad projects: - network_player/ — the main board - dac/ — the audio DAC daughter board
See also the rendered Board design page in the main documentation.
Main components on the Dac
Dac bill of materials (BOM)
23 components, 17 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TCXO 49.152 MHz | Oscillator_SMD_Fordahl_DFAS11-4Pin_7.0x5.0mm_HandSoldering | U1 |
| 1 | ES9023 | SOP-16_4.4x10.4mm_P1.27mm | U2 |
| 1 | LP5912-3.3DRV | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U5 |
| 1 | Raspberry_Pi_2_3 | PinSocket_2x20_P2.54mm_Vertical | J1 |
| 1 | LEFT | PinHeader_1x01_P2.54mm_Vertical | J2 |
| 1 | RIGHT | PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | 3v3 | PinHeader_1x01_P2.54mm_Vertical | J6 |
| 1 | GND | PinHeader_1x01_P2.54mm_Vertical | J7 |
| 1 | GNDA | PinHeader_1x01_P2.54mm_Vertical | J8 |
| 1 | 1N5822/SS34/SMA | D_SMA-SMB_Universal_Handsoldering | D1 |
| 1 | 2.2uF | C_0805_2012Metric | C1 |
| 1 | 2.2uF/50V | CP_Elec_4x5.8 | C2 |
| 3 | 10uF/25V | CP_Elec_4x5.8 | C3, C8, C9 |
| 3 | 1uF | C_0805_2012Metric | C4, C5, C10 |
| 2 | 4.7nF | C_0805_2012Metric | C6, C7 |
| 2 | 100k | R_0805_2012Metric | R1, R3 |
| 1 | 220k | R_0805_2012Metric | R2 |
Dac design files
The KiCad project lives in the naguirre/mds-builder repository on GitHub; these links point at the commit this page was built from.
- Layoutmds-hardware/dac/dac.kicad_pcb
- Schematicmds-hardware/dac/dac.kicad_sch
Dac: common questions
What microcontroller does the Dac use?
The Dac is built around the Raspberry_Pi_2_3, from the Raspberry Pi family.
How big is the Dac PCB?
The Dac measures 30.1 × 65.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Dac?
23 components, from 17 distinct parts. The full bill of materials is listed on this page.
Where can I download the Dac design files?
From the naguirre/mds-builder repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Dac design in my own project?
Yes, under the terms of its MIT license, which naguirre chose for the repository.
Can I test firmware for the Dac without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.
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