HardLabs

Ch552e

nilslmm·ch552e·USBPW/USBPW.kicad_pcb

Ch552e PCB layout, top view — open source WCH CH32/CH55x board by nilslmm

About the Ch552e PCB

Ch552e is an open source WCH CH32/CH55x PCB design by nilslmm, published on GitHub. It is a 2-layer board measuring 34 × 8.4 mm, with 10 components from 7 distinct parts.

Its main chip is the CH552E, from the WCH CH32/CH55x family. By type, the board carries 3 resistors, 2 diodes, 2 capacitors, 1 IC, 1 connector and 1 switch.

From the project

A simple PCB for the ch552e

I wanted to learn SMD soldering and PCB creation. That's why I came up with this small project.

The PCB comes with two LEDs. One Power indicator and one that can be programmed. One programmable button. It has pads that can be bridged to enter bootloader mode.

To program the ch552e using the Arduino IDE you need to add a Board Manager URL. For this you go to File > Preferences and add After that you open the board manager and install

Ch552e, from the project README
From the project README

Main components on the Ch552e

CH552E

Ch552e bill of materials (BOM)

10 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CH552E
U1
1
~
USB1
1
SW_Push
SW1
2
LED
D1, D2
2
100NF
100nF
C1, C2
2
330
R1, R2
1
1.5K
1.5k
R3

Ch552e design files

The KiCad project lives in the nilslmm/ch552e repository on GitHub; these links point at the commit this page was built from.

Ch552e: common questions

What microcontroller does the Ch552e use?

The Ch552e is built around the CH552E, from the WCH CH32/CH55x family.

How big is the Ch552e PCB?

The Ch552e measures 34 × 8.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ch552e?

10 components, from 7 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 Ch552e design files?

From the nilslmm/ch552e 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 Ch552e design in my own project?

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

Can I test firmware for the Ch552e 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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