Boethia60

arviceblot·boethia60·boethia60/boethia60.kicad_pcb

About the Boethia60 PCB

Boethia60 is an open source RP2040/RP2350 PCB design by arviceblot, published on GitHub under the MIT license. It is a 2-layer board measuring 287.3 × 98.4 mm, with 157 components from 78 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the NCP1117-3.3_SOT223, PRTR5V0U2X and W25Q128JVS. By type, the board carries 16 capacitors, 7 resistors, 4 ICs, 1 crystal, 1 connector and 1 fuse.

It belongs with the keyboards designs in this gallery.

From the project

A low profile, hotswap keyboard inspired by the HHBK layout.

A low profile, hotswap keyboard inspired by the HHBK layout, powered by rmk with the rp2040 MCU.

- Low profile, with compatility for Choc V1 and V2 switches - Vial support for realtime keymap changes - HHKB style layout with split spacebars - ESD protection because winters here are dry AF

- [ ] Relocate the USB connector to the left side. - [ ] Change the USB connector to a mid-mount version. Right now, the bottom plate needs a cutout to fit the connector.

Boethia60, from the project README — From the project README

Main components on the Boethia60

NCP1117-3.3_SOT223 PRTR5V0U2X RP2040 W25Q128JVS

Boethia60 bill of materials (BOM)

157 components, 78 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	NCP1117-3.3_SOT223	SOT-23-3	U1
1	PRTR5V0U2X	SOT-143	U2
1	RP2040	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U3
1	W25Q128JVS	SOIC-8_5.23x5.23mm_P1.27mm	U4
1	CRYSTAL_GND24_SMALL Crystal_GND24_Small	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	Conn_01x06	Reset_Pretty-Mask_rp2040	J1
62	D	D_SOD-323	D_1, D_2, D_3, D_4, D_5, D_6, D_7, D_8 +54
1	500M 500m	Fuse_0805_2012Metric	F1
1	esc	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_1
1	1	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_2
1	2	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_3
1	3	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_4
1	4	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_5
1	5	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_6
1	6	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_7
1	7	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_8
1	8	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_9
1	9	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_10
1	0	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_11
1	minus	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_12

Show 58 more

Qty	Part	Footprint	Refs
1	equals	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_13
1	bash	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_14
1	grave	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_15
1	tab	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_16
1	q	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_17
1	w	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_18
1	e	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_19
1	r	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_20
1	t	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_21
1	y	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_22
1	u	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_23
1	i	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_24
1	o	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_25
1	p	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_26
1	l_brace	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_27
1	r_brace	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_28
1	bksp	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_29
1	l_ctrl	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_30
1	a	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_31
1	s	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_32
1	d	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_33
1	f	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_34
1	g	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_35
1	h	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_36
1	j	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_37
1	k	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_38
1	l	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_39
1	semi	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_40
1	quote	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_41
1	enter	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_42
1	l_shift	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_43
1	z	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_44
1	x	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_45
1	c	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_46
1	v	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_47
1	b	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_48
1	n	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_49
1	m	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_50
1	comma	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_51
1	dot	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_52
1	slash	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_53
1	r_shift	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_54
1	mo1	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_55
1	l_gui	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_56
1	l_alt	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_57
2	space	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_58, K_60
1	mo2	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_59
1	r_alt	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_61
1	r_ctrl	SW_Hotswap_Kailh_Choc_V1V2_annotated	K_62
1	SW_Push	SW_SPST_SKQG_WithStem	SW1
1	HRO-TYPE-C-31-M-12	HRO-TYPE-C-31-M-12-HandSoldering	USB1
1	60@100MHz	L_0603_1608Metric	FB1
2	22P 22p	C_0402_1005Metric	C1, C4
4	1u	C_0402_1005Metric	C2, C3, C5, C13
10	100N 100n	C_0402_1005Metric	C6, C7, C8, C9, C10, C11, C12, C14 +2
3	1k	R_0402_1005Metric	R1, R2, R7
2	27.4	R_0402_1005Metric	R3, R4
2	5.1K 5.1k	R_0402_1005Metric	R5, R6

Boethia60 design files

The KiCad project lives in the arviceblot/boethia60 repository on GitHub; these links point at the commit this page was built from.

Boethia60: common questions

What microcontroller does the Boethia60 use?

The Boethia60 is built around the RP2040, from the RP2040/RP2350 family.

How big is the Boethia60 PCB?

The Boethia60 measures 287.3 × 98.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Boethia60?

157 components, from 78 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 Boethia60 design files?

From the arviceblot/boethia60 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 Boethia60 design in my own project?

Yes, under the terms of its MIT license, which arviceblot chose for the repository.

Can I test firmware for the Boethia60 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.