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Opensync prototype

ErichZimmer·OpenSync·electronics/prototypes/opensync_prototype_4ch/opensync_prototype.kicad_pcb

Opensync prototype PCB layout, top view — open source RP2040/RP2350 board by ErichZimmer

About the Opensync prototype PCB

Opensync prototype is an open source RP2040/RP2350 PCB design by ErichZimmer, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 100 × 100 mm, with 82 components from 28 distinct parts.

Its main chip is the RP2354_80QFN, from the RP2040/RP2350 family. Other key parts include the NCP1117-3.3_SOT223, NXE2S0505MC, SN74LVC1G17DCKR and SN74LVC1T45DCKR. By type, the board carries 31 capacitors, 28 resistors, 8 ICs, 8 connectors, 3 inductors and 2 switches.

From the project

An open source synchronizer for velocimetry of fluids.

For a more detailed specification, please read the datasheet.

If successfull, no errors or warnings should be produced. Please note that all commands to and from opensync are terminated with CRLF. Additionally, all used output terminals should be validated on an osciliscope for peace-of-mind, allthough this is not strictly necessary.

- Software: All firmware and software components are covered by the GNU GPLv3 license. - Hardware: All hardware is covered by the CERN-OHL-S-v2 license.

Opensync prototype, from the project README
From the project README

Main components on the Opensync prototype

NCP1117-3.3_SOT223RP2354_80QFNNXE2S0505MCSN74LVC1G17DCKRSN74LVC1T45DCKR

Opensync prototype bill of materials (BOM)

82 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NCP1117-3.3_SOT223
U1
1
RP2354_80QFN
U2
1
NXE2S0505MC
U3
1
SN74LVC1G17DCKR
U4
4
SN74LVC1T45DCKR
U5, U6, U7, U8
1
ABM8-272-T3
Y1
1
61400416121
J1
6
61611042121502
J2, J4, J5, J6, J7, J13
1
SM03B-SRSS-TB
J12
2
SW_Push
SW1, SW2
1
5640100132F
LED1
1
3.3U
3.3u
L1
1
15U
15u
L2
1
22U
22u
L3
5
4.7U
4.7u
C1, C4, C5, C7, C20
2
15P
15p
C2, C3
20
100N
100n
C6, C8, C9, C10, C11, C12, C13, C14 +12
4
10U
10u
C18, C19, C21, C22
1
33
R1
3
1k
R2, R3, R4
Show 8 more
QtyPartRefs
8
10K
10k
R5, R6, R7, R10, R17, R18, R19, R20
6
47K
47k
R8, R27, R28, R30, R32, R34
1
169
120
R9
2
27
R11, R12
1
470
R13
1
100
120
R14
1
120
R15
4
49.9
R29, R31, R33, R35

Opensync prototype design files

The KiCad project lives in the ErichZimmer/OpenSync repository on GitHub; these links point at the commit this page was built from.

Opensync prototype: common questions

What microcontroller does the Opensync prototype use?

The Opensync prototype is built around the RP2354_80QFN, from the RP2040/RP2350 family.

How big is the Opensync prototype PCB?

The Opensync prototype measures 100 × 100 mm, has 4 copper layers and is 1.5842 mm thick.

How many components are on the Opensync prototype?

82 components, from 28 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Opensync prototype design files?

From the ErichZimmer/OpenSync repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Opensync prototype design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which ErichZimmer chose for the repository.

Can I test firmware for the Opensync prototype without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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