HardLabs

USB Reduce Voltage

botanicfields·KiCad6-Environment·6.0/projects/bf-039/bf-039.kicad_pcb

USB Reduce Voltage PCB layout, top view — open source WCH CH32/CH55x board by botanicfields
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About the USB Reduce Voltage PCB

USB Reduce Voltage is an open source WCH CH32/CH55x PCB design by botanicfields, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 45.7 × 17.8 mm, with 16 components from 14 distinct parts.

Its main chip is the CH552, from the WCH CH32/CH55x family. By type, the board carries 7 resistors, 4 connectors, 3 jumpers and 2 diodes.

From the project

My symbols, my footprints, my templates, etc. of KiCad6

USB Reduce Voltage, from the project README
From the project README

USB Reduce Voltage bill of materials (BOM)

16 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
USB_C_Receptacle
J1
1
USB_A_PLUG
J2
1
USB_A_Receptacle
J3
1
SENSE
J4
1
VF
JP1
1
CS
JP2
1
CH552
JP3
1
1S4
D1
1
LED
D2
1
0.1
R1
2
5.1K
5.1k
R2, R3
1
100
R4
1
220
R5
2
2.2K
2.2k
R6, R7

USB Reduce Voltage design files

The KiCad project lives in the botanicfields/KiCad6-Environment repository on GitHub; these links point at the commit this page was built from.

USB Reduce Voltage: common questions

What microcontroller does the USB Reduce Voltage use?

The USB Reduce Voltage is built around the CH552, from the WCH CH32/CH55x family.

How big is the USB Reduce Voltage PCB?

The USB Reduce Voltage measures 45.7 × 17.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the USB Reduce Voltage?

16 components, from 14 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 USB Reduce Voltage design files?

From the botanicfields/KiCad6-Environment 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 USB Reduce Voltage design in my own project?

Yes, under the terms of its CC0-1.0 license, which botanicfields chose for the repository.

Can I test firmware for the USB Reduce Voltage without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug WCH CH32/CH55x firmware against it before you order a PCB.

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