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Hourglass prototype

geschmit·hourglass·hourglass_prototype/hourglass_prototype.kicad_pcb

Hourglass prototype PCB layout, top view — open source RP2040/RP2350 board by geschmit

About the Hourglass prototype PCB

Hourglass prototype is an open source RP2040/RP2350 PCB design by geschmit, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 30 × 40 mm, with 30 components from 17 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q128JVS and RT9080-33GJ5. By type, the board carries 13 capacitors, 6 connectors, 5 resistors, 3 ICs, 1 crystal and 1 switch.

From the project

Hack Club Onboard submission project

Hourglass prototype, from the project README
From the project README

Main components on the Hourglass prototype

RP2040W25Q128JVSRT9080-33GJ5

Hourglass prototype bill of materials (BOM)

30 components, 17 distinct parts.

QtyPartRefs
1
RP2040
U1
1
W25Q128JVS
U2
1
RT9080-33GJ5
U3
1
ABM8-272-T3
Y1
1
Conn_SWD
J1
1
DF40HC(3.0)-40DS-0.4V(51)
Conn_BPCSocketLeft
J2
1
DF40HC(3.0)-40DS-0.4V(51)
Conn_BPCSocketRight
J3
1
DF40C-40DP-0.4V(51)
Conn_BPCPlugLeft
J4
1
DF40C-40DP-0.4V(51)
Conn_BPCPlugRight
J5
1
USB_C_Plug_USB2.0
P1
1
SW_Reset
SW1
1
MBR0540
D1
2
10uF
C1, C2
9
0.1uF
C3, C4, C5, C6, C7, C8, C9, C12 +1
2
1uF
C10, C11
1
5.1k
R1
4
10k
R2, R3, R4, R5

Hourglass prototype design files

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

Hourglass prototype: common questions

What microcontroller does the Hourglass prototype use?

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

How big is the Hourglass prototype PCB?

The Hourglass prototype measures 30 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hourglass prototype?

30 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hourglass prototype design files?

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

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

Yes, under the terms of its Apache-2.0 license, which geschmit chose for the repository.

Can I test firmware for the Hourglass 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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