2 layers22 × 40.6 mm
PCM2900C
Envious-Data/EnvOpenAudio
An open source headphone/PC speaker project utilizing the RP2040, UDA1334A and TPA2016
33 partsGPL-3.0
2 layers21.3 × 68.7 mm
EnvOpenAudio
Envious-Data/EnvOpenAudioAn open source headphone/PC speaker project utilizing the RP2040, UDA1334A and TPA2016
- Size
- 21.3 × 68.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 63
- Nets
- 80
- Pads
- 305
- Tracks, vias
- 442, 65
- Pours
- 18
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 26 Jan 2022
- Updated
- 5 Apr 2025
Overview
EnvOpenAudio is an open-source printed circuit board by Envious-Data, from the Envious-Data/EnvOpenAudio repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 21.3 × 68.7 mm with 63 parts on 80 nets, routed with 442 tracks and 65 vias.
It is built around the RP2040, W25Q16JVUXIQ and TLV75518PDBV, with the B3U-1000P, MPL2016S2R2NHT and SM03B-SRSS-TB among its other parts. Its parts include 33 capacitors, 12 resistors, 5 ICs, 4 connectors and 2 switches. It belongs with the audio and music boards and the RP2040 boards of this library.
Main components
6
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q16JVUXIQ
USON-8-EP(2x3)-40℃~+85℃ 100,000 cycles 10uA 133MHz 16Mbit 2.7V~3.6V 20 Years 3ms SPI USON-8-EP(2x3) NOR FLASH ROHSWinbond ElecNOR FLASH
TLV75518PDBV
SOT-23-5-40℃~+125℃@(Tj) 1 1.8V 33uA 380mV@(500mA) 46dB@(100kHz) 5.5V 500mA 71.5uVrms Fixed Over Current Protection、Soft Start、Enable、Thermal Shutdown Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
B3U-1000P
SMD,3x2.5mm-25℃~+70℃ 1.53N 1.6mm 12V 2.5mm 3mm 50mA Round Button SMD(SMT) Tab SPST Surface Mount,Vertical SMD,3x2.5mm Tactile Switches ROHSOmronTactile Switches
MPL2016S2R2NHT
08061.2A 110mΩ 2.2uH Multilayer inductor ±30% 0806 Power Inductors ROHSSunlordPower Inductors
SM03B-SRSS-TB
Header SR 1.0 SMT side entry, 1mm pitchJSTUncategorised
README
README.mdEnvOpenAudio
An open source headphone/PC speaker project utilizing the RP2040, UDA1334A and TPA2016
Why
I like the idea of using the RP2040 for as many things as possible and since I made my own type-c version of the pico and my phone doesnt have a 3.5mm jack its a nice little bonus... I was also thinking I could use a Tiny2040 since its even smaller than a Pro Micro style board and also has all 4 Analogue GPIOs.
I will need help
Im not a programmer, the most I can do is scripting in bash and python, that said I need someone who can do C stuff, although there is an example for using the Rpi pico as a I2S USB Sound Card it doesnt fully function, it functions enough to use for a while but mute doesnt work and eventually USB will die off for some reason. https://github.com/raspberrypi/pico-playground/tree/master/apps/usb_sound_card
Contributions
Feel free to make a PR if you want to provide your own 3d modeled housings for 3d printable speakers housings or headphone cups, Ill obviously be modeling my own but its always nice to see how people approach things.
to do list (In no particular order)
- Make Functional Concept
- Firmware
- PC Speaker Housinds
- Headphone cups and band
- Custom smaller PCBs of I2S Decoder and amp.
-
Meow at wall for 3 hours
Currently working on (as of last updating this)
- 3d printed housing for speakers, small desktop style pc speakers
Parts
63| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100nf 0402 | Capacitor_SMD:C_0402_1005Metric | C4, C11, C18, C19, C20, C21, C22, C23 |
| 7 | 10uF 0402 | Capacitor_SMD:C_0402_1005Metric | C5, C9, C10, C27, C28, C30, C32 |
| 4 | 100nF 0402 | Capacitor_SMD:C_0402_1005Metric | C29, C31, C37, C38 |
| 4 | 1uF 0402 | Capacitor_SMD:C_0402_1005Metric | C15, C17, C39, C40 |
| 4 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP4 |
| 3 | 1k 4020 | Resistor_SMD:R_0402_1005Metric | R8, R9, R11 |
| 2 | 10uf 0402 | Capacitor_SMD:C_0402_1005Metric | C12, C16 |
| 2 | 15pf 0402 | Capacitor_SMD:C_0402_1005Metric | C2, C3 |
| 2 | 27r 0402 | Resistor_SMD:R_0402_1005Metric | R13, R14 |
| 2 | 47uF 0805 | Capacitor_SMD:C_0805_2012Metric | C35, C36 |
| 2 | 5.1K 0402 | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | B3U-1000 | Button_Switch_SMD:SW_SPST_B3U-1000P-B | SW1, SW2 |
| 1 | 0.1uF 0402 | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | 0.1uf 0402 | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 0r 0402 | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 100K 0402 | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric | C14 |
| 1 | 100ohm 0402 | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 10uf 0805 | Capacitor_SMD:C_0805_2012Metric | C24 |
| 1 | 12Mhz 2520 18pF | Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | 220 0402 | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 22K 0402 | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Conn_01x10 | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J3 |
| 1 | MPL2016S2R2NHT | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | NetTie_2 | NetTie:NetTie-2_SMD_Pad2.0mm | NT1 |
| 1 | RP2040 | RP2040_minimal:RP2040-QFN-56 | U4 |
| 1 | SM03B-SRSS-TB | Connector_JST:JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_Horizontal | J2 |
| 1 | TLV320AIC3110 | Package_DFN_QFN:VQFN-32-1EP_5x5mm_P0.5mm_EP3.15x3.15mm_ThermalVias | U5 |
| 1 | TLV75518PDBV | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | TPS63001DRCR | Package_SON:Texas_DRC0010J_ThermalVias | U2 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | W25Q16JVUXIQ | Package_SON:SON-8-1EP_3x2mm_P0.5mm_EP1.4x1.6mm | U1 |
Questions
How big is the EnvOpenAudio PCB?
It measures 21.3 × 68.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the EnvOpenAudio use?
63 parts, built around the RP2040, W25Q16JVUXIQ, TLV75518PDBV and B3U-1000P. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the EnvOpenAudio KiCad files?
From the Envious-Data/EnvOpenAudio repository on GitHub, at the commit this page was made from: the board is KiCad/EnvOpenAudio-RP2040/EnvOpenAudio.kicad_pcb and its schematic KiCad/EnvOpenAudio-RP2040/EnvOpenAudio.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the EnvOpenAudio design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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