4 layers40 × 50 mm UPTP Pre Rounding, the printed circuit board in 3D

UPTP Pre Rounding

The smallest, cheapest PTP clock that you can make!

Size: 40 × 50 mm
Copper layers: 4
Thickness: 1.61 mm
Parts: 94
Nets: 107
Pads: 312
Tracks, vias: 571, 111
Pours: 11
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 1 Jun 2025
Updated: 24 Feb 2026

Overview

UPTP Pre Rounding is an open-source printed circuit board by BOJIT, from the BOJIT/uPTP repository on GitHub, published under the MIT licence. It is a 4-layer board of 40 × 50 mm with 94 parts on 107 nets, routed with 571 tracks and 111 vias.

It is built around the CH32V307WCU6, SI3404-A-GMR and XC6206P332MR-G, with the BAT60JFILM, GZ1608D601TF and SS210 among its other parts. Its parts include 25 capacitors, 20 resistors, 9 diodes, 7 connectors and 3 ICs. It belongs with the lEDs and displays boards and the RISC-V boards of this library.

Main components

README

README.md

uPTP

The smallest, cheapest PTP clock that you can make!

Project Setup

Clone Project to your computer
Ensure that you have west installed somehere (I usually put it in <GIT_REPO>/.venv, as VSCode will usually launch it automatically.)

python -m venv .venv
source .venv/bin/activate
pip install west

Run West Init Locally against the West YAML file: `west init -l software/app

Parts

Qty	Value	Footprint	References
12	100n	Capacitor_SMD:C_0402_1005Metric	C2, C6, C7, C10, C16, C17, C18, C19, C20, C21, C22, C25
5	75	Resistor_SMD:R_0402_1005Metric	R1, R2, R3, R4, R6
4	49.9	Resistor_SMD:R_0402_1005Metric	R8, R9, R11, R12
3	BAT60JFILM	Diode_SMD:D_SOD-323	D1, D2, D3
2	100n	Capacitor_SMD:C_0805_2012Metric	C5, C8
2	100u	Capacitor_SMD:C_1206_3216Metric	C13, C14
2	10k	Resistor_SMD:R_0402_1005Metric	R16, R17
2	10u	Capacitor_SMD:C_0603_1608Metric	C1, C15
2	10u	Capacitor_SMD:C_0805_2012Metric	C9, C11
2	20p	Capacitor_SMD:C_0402_1005Metric	C23, C24
2	24.3k	Resistor_SMD:R_0402_1005Metric	R5, R13
2	5.1k	Resistor_SMD:R_0402_1005Metric	R19, R20
2	GZ1608D601TF	Resistor_SMD:R_0603_1608Metric	FB1, FB2
2	MB10F_C2491	uPTP:DIO-BG-SMD_4P-L4.9-W4.0-P2.54-LS7.0-BR	D5, D6
2	MountingHole_Pad	MountingHole:MountingHole_3.2mm_M3_Pad	H1, H2
2	SS210	Diode_SMD:D_SMA	D7, D8
1	1.2	Resistor_SMD:R_0402_1005Metric	R10
1	10	Resistor_SMD:R_0402_1005Metric	R18
1	11k	Resistor_SMD:R_0402_1005Metric	R14
1	1n	Capacitor_SMD:C_0402_1005Metric	C12
1	1n	Capacitor_SMD:C_1206_3216Metric	C4
1	2.2u	Capacitor_SMD:C_0402_1005Metric	C3
1	3.9k	Resistor_SMD:R_0402_1005Metric	R15
1	47u	Inductor_SMD:L_Changjiang_FXL0630	L1
1	5V_EXT	TestPoint:TestPoint_Pad_D1.5mm	TP1
1	88.7k	Resistor_SMD:R_0402_1005Metric	R7
1	AUX_PWR	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal	J6
1	BOOT1	TestPoint:TestPoint_Pad_D1.5mm	TP2
1	BOOT_0	Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm	JP2
1	CH32V307WCU6	uPTP:QFN-68_L8.0-W8.0-P0.40-BL-EP6.7	U3
1	DEBUG_1	TestPoint:TestPoint_Pad_D1.5mm	TP3
1	DEBUG_2	TestPoint:TestPoint_Pad_D1.5mm	TP4
1	G***	kibuzzard-68B2D9A3	kibuzzard-68B2D9A3
1	G***	kibuzzard-68B2D2B0	kibuzzard-68B2D2B0
1	G***	kibuzzard-68B2D2D8	kibuzzard-68B2D2D8
1	G***	kibuzzard-68B2D348	kibuzzard-68B2D348
1	G***	kibuzzard-68B2D2E2	kibuzzard-68B2D2E2
1	G***	kibuzzard-68B2D304	kibuzzard-68B2D304
1	G***	kibuzzard-68B2D2A2	kibuzzard-68B2D2A2
1	G***	kibuzzard-68B2C77A	kibuzzard-68B2C77A
1	G***	kibuzzard-68B2D434	kibuzzard-68B2D434
1	G***	kibuzzard-68B2D367	kibuzzard-68B2D367
1	G***	kibuzzard-68B2D28B	kibuzzard-68B2D28B
1	G***	kibuzzard-68B2C79E	kibuzzard-68B2C79E
1	G***	kibuzzard-68B2D264	kibuzzard-68B2D264
1	G***	kibuzzard-68B2D3F7	kibuzzard-68B2D3F7
1	HC-RJ45-055-7	uPTP:RJ45-SMD_HC-RJ45-055-7_1	J5
1	LED	Connector_PinHeader_1.27mm:PinHeader_1x03_P1.27mm_Vertical	J3
1	LOGO	uPTP:BOJIT_LOGO	G***
1	PPS_SMA	Connector_Coaxial:SMA_Samtec_SMA-J-P-H-ST-EM1_EdgeMount	J2
1	PPS_UFL	uPTP:IPEX-SMD_HC-RF-IPEX0303-01	J1
1	PROG	Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical	J7
1	PWR_SELECT	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels	JP1
1	SI3404-A-GMR	Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.6x2.6mm	U2
1	SWO	TestPoint:TestPoint_Pad_D1.5mm	TP5
1	TYPE-C 16PIN 2MD(073)	uPTP:USB-C-SMD_TYPE-C-16PIN	USB1
1	UART_HDR	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal	J4
1	USBLC6-2SC6	uPTP:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL	D9
1	WS2812B-2020	LED_SMD:LED_WS2812B-2020_PLCC4_2.0x2.0mm	D4
1	X50328MSB2GI	uPTP:CRYSTAL-SMD_L5.0-W3.2	X1
1	XC6206P332MR-G	Package_TO_SOT_SMD:SOT-23-3	U1
1	~	uPTP:B1608S	TR1

Questions

How big is the UPTP Pre Rounding PCB?

It measures 40 × 50 mm and has 4 copper layers, 1.61 mm thick.

What parts does the UPTP Pre Rounding use?

94 parts, built around the CH32V307WCU6, SI3404-A-GMR, XC6206P332MR-G and BAT60JFILM. 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 UPTP Pre Rounding KiCad files?

From the BOJIT/uPTP repository on GitHub, at the commit this page was made from: the board is hardware/uPTP-Pre-Rounding.kicad_pcb and its schematic hardware/ethernet.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the UPTP Pre Rounding 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

LEDs and displays RISC-V

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/bojit-uptp" title="UPTP Pre Rounding 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/bojit-uptp.jpg" alt="UPTP Pre Rounding" width="1200" height="900">

A picture that opens the board, for a README

[![UPTP Pre Rounding](https://pcbkit.io/embed/boards/bojit-uptp.jpg?size=s)](https://pcbkit.io/boards/bojit-uptp)

Source

Repository: BOJIT/uPTP
Board file: hardware/uPTP-Pre-Rounding.kicad_pcb
Commit: 72a0180
Licence: MIT
Copies: 2 copies in 1 repository

Similar boards

4 layers83.8 × 22.9 mm
Remex wch
ArcaneNibble/remex-wch
CH32V307 GigE development board
102 parts10BSD
4 layers107.5 × 56 mm
Output panel
gustebeast/public-steel-guitar
A pedal steel guitar you can build yourself, from parts anyone can buy.
179 partsCERN-OHL-S-2.0
4 layers81.2 × 100.2 mm
Underglow3
ConnorRigby/nerves_system_underglow3
hardware support for underglow3
242 parts6Apache-2.0
4 layers31 × 100 mm
Kp ptr
PTR-projects/PTR_mega_hardware
Welcome to the KPPTR-hardware repository! This repository contains the design files for the hardware components used in the KPPTR project.
208 parts3MIT
4 layers61.2 × 38.9 mm
LoRA board
SCFormulaElectric/USC-Electrical-Systems

60 parts9
2 layers31.9 × 36 mm
Lemon pcb
rianadon/Cosmos-Keyboard-PCBs
Open-Source keyboard PCB designs for the Cosmos Keyboard Generator
54 parts43
4 layers55.5 × 0 mm
Gesc
CTSchorsch/gesc
DC Motor Controler based on Benjamin Vedders VESC
159 parts17
4 layers200 × 150 mm
Midi controller
rland93/midi8x3
midi controller 8 channels x3 faders
190 parts