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Prototype eval

ErichZimmer·OpenSync·electronics/prototypes/opensync_prototype_eval/prototype_eval.kicad_pcb

Prototype eval PCB layout, top view — open source RP2040/RP2350 board by ErichZimmer

About the Prototype eval PCB

Prototype eval is an open source RP2040/RP2350 PCB design by ErichZimmer, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 200 × 100 mm, with 60 components from 25 distinct parts.

Its main chip is the NCP1117-3.3_SOT223, from the RP2040/RP2350 family. Other key parts include the RP2354_80QFN, NXE2S0505MC, SN74LVC1G17DCKR and SN74LVC1T45DCKR. By type, the board carries 22 resistors, 17 capacitors, 10 ICs, 10 connectors and 1 LED.

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.

Prototype eval, from the project README
From the project README

Main components on the Prototype eval

NCP1117-3.3_SOT223RP2354_80QFNNXE2S0505MCSN74LVC1G17DCKRSN74LVC1T45DCKR

Prototype eval bill of materials (BOM)

60 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NCP1117-3.3_SOT223
Pico
U1
1
RP2354_80QFN
SN74LVC1T45DCKR
U2
1
NXE2S0505MC
SN74LVC1T45DCKR
U3
1
SN74LVC1G17DCKR
SN74LVC1T45DCKR
U4
4
SN74LVC1T45DCKR
U5, U6, U7, U8
1
SN74LVC1T45DCKR
U9
1
SN74LVC1G17DCKR
U10
1
61400416121
61611042121502
J1
5
61611042121502
J2, J4, J5, J6, J7
4
61611042121502
J3, J8, J9, J10
1
5640100132F
LED1
4
4.7U
100n
C1, C4, C5, C7
2
15P
100n
C2, C3
11
100N
100n
C6, C8, C9, C10, C11, C12, C13, C14 +3
5
47k
R1, R3, R11, R15, R22
4
49.9
R2, R4, R12, R16
3
10K
47k
R5, R7, R17
2
10K
49.9
R6, R10
1
47K
49.9
R8
1
169
47k
R9
Show 5 more
QtyPartRefs
1
470
47k
R13
1
100
49.9
R14
1
10K
470
R18
2
10K
120
R19, R20
1
120
R21

Prototype eval design files

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

Prototype eval: common questions

What microcontroller does the Prototype eval use?

The Prototype eval is built around the NCP1117-3.3_SOT223, from the RP2040/RP2350 family.

How big is the Prototype eval PCB?

The Prototype eval measures 200 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Prototype eval?

60 components, from 25 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 Prototype eval 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 Prototype eval 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 Prototype eval 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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