2 layers132.1 × 45.7 mm
IPoS
peterheinrich/InternetOverSpaghetti
Transmitting IP packages over a pair of spaghetti thus demonstrating how media independent IP really is.
42 parts342
2 layers40.6 × 110 mm
Europi surface mount
Allen-Synthesis/EuroPi584EuroPi: A reprogrammable Eurorack module based on the Raspberry Pi Pico
- Size
- 40.6 × 110 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 92
- Nets
- 89
- Pads
- 286
- Tracks, vias
- 968, 160
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 15 Oct 2021
- Updated
- 8 Sep 2026
Overview
Europi surface mount is an open-source printed circuit board by Allen-Synthesis, from the Allen-Synthesis/EuroPi repository on GitHub, published under the CC0-1.0 licence. It is a 2-layer board of 40.6 × 110 mm with 92 parts on 89 nets, routed with 968 tracks and 160 vias.
It is built around the L7805. Its parts include 42 resistors, 17 capacitors, 12 connectors, 10 diodes and 5 ICs. It belongs with the audio and music boards and the RP2040 boards of this library.
Main components
1README
hardware/surface-mount/README.mdEuroPi (surface-mount)
This is a version of the EuroPi that has all of the components other than the Pico, power header, and panel components pre-soldered using SMD packages. This makes for a much simpler DIY build, as well as a thinner end result. It has identical technical specifications to the through-hole version and adds the hardware required for input detection.
The board files for this version are designed in KiCad so are a more friendly starting point for third-party development or modification.
Parts
92| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 1K | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R13, R14, R16, R17, R26, R27, R29, R30, R38, R39 |
| 13 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C6, C7, C9, C10, C11, C12, C13, C14, C16, C17, C18 |
| 8 | 100K | Resistor_SMD:R_0603_1608Metric | R7, R8, R15, R19, R20, R31, R32, R35 |
| 6 | 220K | Resistor_SMD:R_0603_1608Metric | R9, R10, R21, R22, R33, R34 |
| 6 | 5K1 | Resistor_SMD:R_0603_1608Metric | R11, R12, R24, R25, R36, R37 |
| 6 | LED | allen-synthesis:led-3mm | LED1, LED2, LED3, LED4, LED5, LED6 |
| 5 | 10K | Resistor_SMD:R_0603_1608Metric | R5, R6, R40, R41, R42 |
| 4 | D | Diode_SMD:D_SMA | D1, D2, D3, D5 |
| 3 | 22K | Resistor_SMD:R_0603_1608Metric | R18, R23, R28 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | SW_Push | allen-synthesis:switch-momentary-c&k | SW1, SW2 |
| 2 | TL074 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U3, U4 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C15 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 2N2222 | Package_TO_SOT_SMD:SOT-89-3 | Q1 |
| 1 | Analogue Input Jack | allen-synthesis:jack-thonkiconn-mono | J5 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | Conn_01x04_Pin | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J11 |
| 1 | Conn_01x04_Pin | Connector_JST:JST_PH_B6B-PH-K_1x06_P2.00mm_Vertical | J12 |
| 1 | Conn_02x05_Odd_Even | allen-synthesis:power-header-10-pin-unlabelled | J1 |
| 1 | Digital Input Jack | allen-synthesis:jack-thonkiconn-mono | J8 |
| 1 | KNOB 1 | allen-synthesis:potentiometer-9mm | VR1 |
| 1 | KNOB 2 | allen-synthesis:potentiometer-9mm | VR2 |
| 1 | L7805 | Package_TO_SOT_SMD:TO-252-2 | U6 |
| 1 | LOGO | LOGO | G*** |
| 1 | MCP6002-xSN | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | Output 1 Jack | allen-synthesis:jack-thonkiconn-mono | J3 |
| 1 | Output 2 Jack | allen-synthesis:jack-thonkiconn-mono | J6 |
| 1 | Output 3 Jack | allen-synthesis:jack-thonkiconn-mono | J9 |
| 1 | Output 4 Jack | allen-synthesis:jack-thonkiconn-mono | J4 |
| 1 | Output 5 Jack | allen-synthesis:jack-thonkiconn-mono | J7 |
| 1 | Output 6 Jack | allen-synthesis:jack-thonkiconn-mono | J10 |
| 1 | PICO_RP2040 | allen-synthesis:raspberry-pi-pico | U2 |
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Questions
How big is the Europi surface mount PCB?
It measures 40.6 × 110 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Europi surface mount use?
92 parts, built around the L7805. 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 Europi surface mount KiCad files?
From the Allen-Synthesis/EuroPi repository on GitHub, at the commit this page was made from: the board is hardware/surface-mount/europi-surface-mount.kicad_pcb and its schematic hardware/surface-mount/europi-surface-mount.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Europi surface mount design in my own project?
Its repository publishes it under the CC0-1.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).