2 layers155 × 18 mm Ruler, the printed circuit board in 3D

Ruler

OSH version of my personal PCB ruler

Size: 155 × 18 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 123
Nets: 101
Pads: 1,119
Tracks, vias: 704, 109
Pours: 48
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 6 Feb 2025
Updated: 6 Feb 2025

Overview

Ruler is an open-source printed circuit board by chez-d, from the chez-d/ruler-osh repository on GitHub, published under the MIT licence. It is a 2-layer board of 155 × 18 mm with 123 parts on 101 nets, routed with 704 tracks and 109 vias.

It is built around the CH32V203G6U6, ICE40UP5K-SG48ITR50 and SGTL5000XNLA3, with the TPS62A01DRL, BQ24040_45 and LM66200DRL among its other parts. Its parts include 36 capacitors, 26 resistors, 10 ICs, 7 switches and 5 diodes. It belongs with the RISC-V and FPGA and CPLD boards of this library.

Main components

README

README.md

ruler-osh

OSH version of my personal PCB ruler

Use it for what you want, but it would be nice to credit me. It's a 15cm ruler - but also a FPGA dev board, music player, game console, and component footprint reference... Best on OSHPark After Dark.

Parts

123

Qty	Value	Footprint	References
16	100n	Capacitor_SMD:C_0402_1005Metric	C4, C6, C11, C13, C15, C17, C20, C21, C23, C25, C28, C29, C30, C32, C33, C35
15	4.7u	Capacitor_SMD:C_0402_1005Metric	C1, C3, C7, C8, C9, C12, C14, C19, C22, C24, C26, C27, C31, C34, C36
11	10k	Resistor_SMD:R_0402_1005Metric	R4, R15, R16, R19, R21, R22, R23, R24, R25, R26, R27
6	SW_Push	ruler:SW_SPST_PTS815	SW2, SW3, SW4, SW5, SW6, SW7
5	1k	Resistor_SMD:R_0402_1005Metric	R6, R8, R10, R11, R20
5	5.1k	Resistor_SMD:R_0402_1005Metric	R2, R3, R5, R17, R18
3	100k	Resistor_SMD:R_0402_1005Metric	R9, R13, R14
2	1u	Capacitor_SMD:C_0402_1005Metric	C5, C10
2	22u	Capacitor_SMD:C_0805_2012Metric	C2, C18
2	LED	LED_SMD:LED_0603_1608Metric	D1, D5
1	100	Resistor_SMD:R_0402_1005Metric	R7
1	120p	Capacitor_SMD:C_0402_1005Metric	C16
1	15	Resistor_SMD:R_0402_1005Metric	R12
1	1u	ruler:L_Murata_DFE201610P	L1
1	48MHz	Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm	U8
1	AudioJack4	Connector_Audio:Jack_3.5mm_PJ320D_Horizontal	J5
1	BOOT0	ruler:SW_SPST_PTS815	SW1
1	BQ24040	ruler:WSON-10_EP_2x2_Pitch0.4mm	U4
1	CH32V203G6U6	Package_DFN_QFN:QFN-28-1EP_4x4mm_P0.4mm_EP2.8x2.8mm	U7
1	GREEN	LED_SMD:LED_0603_1608Metric	D3
1	Generic 8P 160x80 TFT	ruler:LCD_1x8_Newvision	J4
1	ICE40UP5K-SG48ITR	Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm	U2
1	LED_RGBA	ruler:XL-B1515RGBA-HF	D6
1	LIPO	Connector_JST:JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal	J2
1	LM66200	Package_TO_SOT_SMD:SOT-583-8	U3
1	MMBT2222	Package_TO_SOT_SMD:SOT-723	Q1
1	Micro_SD_Card_Det2	Connector_Card:microSD_HC_Molex_104031-0811	J3
1	ORANGE	LED_SMD:LED_0603_1608Metric	D2
1	Ruler	ruler:Ruler	PCB1
1	SGTL5000XNLA3	Package_DFN_QFN:QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm	U10
1	SWC	ruler:TestPoint	TP2
1	SWD	ruler:TestPoint	TP1
1	TLV70018DSER	Package_SON:WSON-6_1.5x1.5mm_P0.5mm	U9
1	TLV70025DSER	Package_SON:WSON-6_1.5x1.5mm_P0.5mm	U1
1	TLV70033DSER	Package_SON:WSON-6_1.5x1.5mm_P0.5mm	U6
1	TPS62A01	Package_TO_SOT_SMD:SOT-563	U5
1	USB	Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A	J1
1	~{RESET}	ruler:TestPoint	TP3

The 95 most common of 123 parts.

Questions

How big is the Ruler PCB?

It measures 155 × 18 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Ruler use?

123 parts, built around the CH32V203G6U6, ICE40UP5K-SG48ITR50, SGTL5000XNLA3 and TPS62A01DRL. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Ruler KiCad files?

From the chez-d/ruler-osh repository on GitHub, at the commit this page was made from: the board is ruler.kicad_pcb and its schematic ruler.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Ruler design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

RISC-V FPGA and CPLD

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/chez-d-ruler-osh" title="Ruler in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/chez-d-ruler-osh.jpg" alt="Ruler" width="1200" height="900">

A picture that opens the board, for a README

[![Ruler](https://pcbkit.io/embed/boards/chez-d-ruler-osh.jpg?size=s)](https://pcbkit.io/boards/chez-d-ruler-osh)

Source

Repository: chez-d/ruler-osh
Board file: ruler.kicad_pcb
Commit: 9850748
Licence: MIT

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