X35

cyao1234·x35·hardware/x35.kicad_pcb

X35 PCB layout, top view — open source WCH CH32/CH55x board by cyao1234

About the X35 PCB

X35 is an open source WCH CH32/CH55x PCB design by cyao1234, published on GitHub. It is a 2-layer board measuring 15.2 × 27.9 mm, with 12 components from 9 distinct parts.

Its main chip is the CH32X035X8X6, from the WCH CH32/CH55x family. Other key parts include the XC6206PXXXMR. By type, the board carries 4 resistors, 3 capacitors, 2 ICs, 1 connector, 1 switch and 1 diode.

It belongs with the power & battery and dev boards & breakouts designs in this gallery.

From the project

A compact CH32X350 microcontroller development board with integrated USB Power Delivery support and 24V input tolerance.

A compact CH32X350 microcontroller development board with integrated USB Power Delivery support and 24V input tolerance.

This is made for easy usb pd delivery usage and a ultra-cheap mcu.

Features: - Tiny footprint - Tiny footprint *2 - Fits in tight spaces - USB PD - USB bootloader so no max in a basement :c - Built-in bootloader - i'm going crazy

Check out ch32fun for usage. To get into the bootloader just press the only button

X35, from the project README — From the project README

Main components on the X35

XC6206PXXXMR CH32X035X8X6

X35 bill of materials (BOM)

12 components, 9 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	XC6206PXXXMR XC6206PxxxMR	SOT-23-3	U1
1	CH32X035X8X6 CH32X035x8x6	QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm_ThermalVias	U2
1	USB_C_RECEPTACLE_USB2.0_14P USB_C_Receptacle_USB2.0_14P	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1
1	SW_Push	SW_Push_SPST_TSA016	SW1
1	LED	LED_0402_1005Metric	D2
2	1UF 1uF	C_0402_1005Metric	C1, C2
1	100NF 100nF	C_0402_1005Metric	C3
3	5.1K 5.1k	R_0402_1005Metric	R1, R2, R3
1	1.5K 1.5k	R_0402_1005Metric	R5

X35 design files

The KiCad project lives in the cyao1234/x35 repository on GitHub; these links point at the commit this page was built from.

X35: common questions

What microcontroller does the X35 use?

The X35 is built around the CH32X035X8X6, from the WCH CH32/CH55x family.

How big is the X35 PCB?

The X35 measures 15.2 × 27.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the X35?

12 components, from 9 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 X35 design files?

From the cyao1234/x35 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 X35 design in my own project?

The repository has no license, so all rights stay with cyao1234. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the X35 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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