Clops

calvin-mcd·clops·Project/clops.kicad_pcb

About the Clops PCB

Clops is an open source RP2040/RP2350 PCB design by calvin-mcd, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 234.5 × 96 mm, with 105 components from 22 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q16JVUXIQ, USBLC6-2SC6 and XC6206PXXXMR-REGULATOR_LINEAR. By type, the board carries 36 diodes, 17 capacitors, 7 resistors, 4 ICs, 1 crystal and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

qazlike unibody split keyboard

clops is a qazlike unibody split sub40s keyboard. The KLE and firmware is by ha ha ha which itself is inspired by a KLE from Noelle. PCB is designed by Calvin0563. It sports a rp2040 and hotswap socket, and supports 1 center rotary encoder and 1 bottom row roller encoder.

When installing the Roller encoder be sure to remove the plastic clips where the encoder slots into the pcb cut out and make sure it is aligned to your satisfaction with the centre of the pcb before soldering!

Clops, from the project README — From the project README

Main components on the Clops

W25Q16JVUXIQ USBLC6-2SC6 RP2040 XC6206PXXXMR-REGULATOR_LINEAR

Clops bill of materials (BOM)

105 components, 22 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	W25Q16JVUXIQ	SON50P300X200X60-9N	IC1
1	USBLC6-2SC6	SOT-23-6	U2
1	RP2040	RP2040-QFN-56	U3
1	XC6206PXXXMR-REGULATOR_LINEAR XC6206PxxxMR-Regulator_Linear	SOT-23	U4
1	12MHZ 12MHz	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1
1	500MA 500mA	Fuse_1206_3216Metric	F1
2	C5156480 MX_SW_HS	SW_MX_HS_CPG151101S11_1.5u	MX1, MX10
30	C5156480 MX_SW_HS	SW_MX_HS_CPG151101S11_1u	MX2, MX3, MX4, MX5, MX6, MX7, MX8, MX9 +22
4	C5156480 MX_SW_HS	SW_MX_HS_CPG151101S11_1.25u	MX11, MX20, MX31, MX36
1	C115351 boot	SW_SPST_TL3342	SW4
1	C115351 Reset	SW_SPST_TL3342	SWR1
36	C81598 D_Small	D_SOD-123F	D1, D2, D3, D4, D5, D6, D7, D8 +28
2	22PF 22pF	C_0402_1005Metric	C2, C3
4	1UF 1uF	C_0402_1005Metric	C4, C8, C16, C17
9	100NF 100nF	C_0402_1005Metric	C5, C6, C9, C10, C11, C12, C13, C14 +1
1	10UF 10uF	C_0402_1005Metric	C7
1	100NF 100n	C_0402_1005Metric	C18
1	5.1K 5.1k	R_0402_1005Metric	R1
2	5.1K 5k1	R_0402_1005Metric	R3, R4

Show 2 more

Qty	Part	Footprint	Refs
2	27R	R_0603_1608Metric	R5, R6
2	1k	R_0402_1005Metric	R7, R9

Clops design files

The KiCad project lives in the calvin-mcd/clops repository on GitHub; these links point at the commit this page was built from.

LayoutProject/clops.kicad_pcb
SchematicProject/clops.kicad_sch
BOMProject/jlcpcb/production_files/BOM-clops.csv

Clops: common questions

What microcontroller does the Clops use?

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

How big is the Clops PCB?

The Clops measures 234.5 × 96 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Clops?

105 components, from 22 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 Clops design files?

From the calvin-mcd/clops 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 Clops design in my own project?

Yes, under the terms of its GPL-3.0 license, which calvin-mcd chose for the repository.

Can I test firmware for the Clops 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.