HardLabs

Pass2

lnvke·DH-CTR-0·CTR-0-main/pass2/pass2.kicad_pcb

Pass2 PCB layout, top view — open source RP2040/RP2350 board by lnvke

About the Pass2 PCB

Pass2 is an open source RP2040/RP2350 PCB design by lnvke, published on GitHub under the CERN-OHL-W-2.0 license. It is a 2-layer board measuring 21 × 51 mm, with 35 components from 24 distinct parts.

Its main chip is the NCP1117-3.3_SOT223, from the RP2040/RP2350 family. Other key parts include the TVS1400DRV, MX25L12872FM2I-10G and RP2040. By type, the board carries 18 capacitors, 7 resistors, 4 ICs, 4 connectors, 1 crystal and 1 switch.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

Cheaper Than aRduino is a custom devboard meant to be a cost-effective alternative to the Arduino Nano series of devboard hobbyist microcontrollers. It is based of the same RP2040 microcontroller and provides the similar if not the same performance compared to its far more costly equivalents.

Main components on the Pass2

NCP1117-3.3_SOT223TVS1400DRVMX25L12872FM2I-10GRP2040

Pass2 bill of materials (BOM)

35 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NCP1117-3.3_SOT223
RP2040
U1
1
TVS1400DRV
NCP1117-3.3_SOT223
U2
1
MX25L12872FM2I-10G
W25Q128JVS
U3
1
RP2040
TVS1400DRV
U4
1
12MHZ
12MHz
Y1
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_14P
J1
1
CONN_01X20
Conn_01x20
J2
1
CONN_01X03
Conn_01x20
J3
1
CONN_01X20
Conn_01x03
J4
1
SW_Push
SW1
2
10U
10u
C1, C2
1
4.7U
15p
C3
1
15P
15p
C4
1
15P
5u
C5
1
100N
1u
C6
2
0.1u
C7, C16
8
0.1U
0.1u
C8, C9, C10, C11, C12, C13, C14, C17
1
0.1U
1u
C15
1
0.1U
100n
C18
2
5.1K
5.1k
R1, R2
Show 4 more
QtyPartRefs
1
10K
1k
R3
2
27
R4, R5
1
10K
10k
R6
1
1k
R7

Pass2 design files

The KiCad project lives in the lnvke/DH-CTR-0 repository on GitHub; these links point at the commit this page was built from.

Pass2: common questions

What microcontroller does the Pass2 use?

The Pass2 is built around the NCP1117-3.3_SOT223, from the RP2040/RP2350 family.

How big is the Pass2 PCB?

The Pass2 measures 21 × 51 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pass2?

35 components, from 24 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 Pass2 design files?

From the lnvke/DH-CTR-0 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Pass2 design in my own project?

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

Can I test firmware for the Pass2 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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