Clacky40

ScatteredDrifter·Clacky40·pcb/dizzy40.kicad_pcb

About the Clacky40 PCB

Clacky40 is an open source RP2040/RP2350 PCB design by ScatteredDrifter, published on GitHub. It is a 2-layer board measuring 229 × 80 mm, with 128 components from 24 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q128JVS, C347376 and SRV05-4. By type, the board carries 55 relays, 23 diodes, 15 capacitors, 9 connectors, 9 LEDs and 7 resistors.

It belongs with the keyboards designs in this gallery.

From the project

Daisy40 drop-in replacement PCB, NOW with RP2040 and some additional features

Yet another replacement Board for the Daisy40. Running with a RP2040, adapted from elmos:

Alternatively one could download my fork of vial-qmk here and compile the firmware themself. For that you will have to: 1. have set up qmk and be ready to compile and flash. ( See qmk setup or consult the qmk tutorial) 2. find my keyboards, under ../keyboards/scattereddrifter/ and choose clacky40. 3. make your changes 4. compile with qmk compile --kb scattereddrifter/clacky40 --km yourKeyMap

Clacky40, from the project README — From the project README

Main components on the Clacky40

W25Q128JVS RP2040 C347376 SRV05-4

Clacky40 bill of materials (BOM)

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

Qty	Part	Footprint	Refs
1	W25Q128JVS	SOIC-8_5.23x5.23mm_P1.27mm	U2
1	RP2040	RP2040-QFN-56	U3
1	C347376 XC6206P Smaller footprint, less mA ~.5	SOT-23	U4
1	SRV05-4	SOT-23-6	U44
1	C9002 12MHZ Crystal	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y0
1	USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J0
1	BREAKOUT	PinSocket_1x05_P2.54mm_Vertical	J1
1	CONN_01X03_MALE Conn_01x03_Male	PinSocket_1x03_P2.54mm_Vertical	J2
5	SCREW_TERMINAL_01X02 Screw_Terminal_01x02	STAB_MX_P_2u	J3, J5, J6, J7, J8
1	Breakout 1.1v	PinSocket_1x02_P2.54mm_Vertical	J4
2	RotaryEncoder_Switch	RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm	ENC1, ENC2
1	C69688 polyfuse	Fuse_1206_3216Metric	F0
55	KEYSW	SW_MX_1u	K1, K2, K3, K4, K5, K6, K7, K8 +47
2	C2886894 RESET	SW_SPST_TL3342	SW0, SW2
9	WS2812B	LED_WS2812B-PLCC4	RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, RGB7, RGB8 +1
23	BAV70	SOT-23	D17, D18, D19, D20, D21, D22, D23, D24 +15
3	10U 10u	C_0805_2012Metric	C1, C4, C17
2	22PF 22pf	C_0805_2012Metric	C2, C3
8	100N 100n	C_0805_2012Metric	C5, C6, C7, C9, C11, C12, C13, C14
2	1u	C_0805_2012Metric	C8, C10

Show 4 more

Qty	Part	Footprint	Refs
2	1k	R_0805_2012Metric	R1, R5
2	27	R_0805_2012Metric	R3, R4
2	5.1K 5.1k	R_0805_2012Metric	R6, R7
1	10K 10k	R_0805_2012Metric	R8

Clacky40 design files

The KiCad project lives in the ScatteredDrifter/Clacky40 repository on GitHub; these links point at the commit this page was built from.

Clacky40: common questions

What microcontroller does the Clacky40 use?

The Clacky40 is built around the RP2040, from the RP2040/RP2350 family.

How big is the Clacky40 PCB?

The Clacky40 measures 229 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Clacky40?

128 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 Clacky40 design files?

From the ScatteredDrifter/Clacky40 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 Clacky40 design in my own project?

The repository has no license, so all rights stay with ScatteredDrifter. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Clacky40 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.