HardLabs

Watchy hardware v2

xywatch·watchy-hardware-v2·v2.0-typec-CP2102N/Watchy.kicad_pcb

Watchy hardware v2 PCB layout, top view — open source RP2040/RP2350 board by xywatch
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About the Watchy hardware v2 PCB

Watchy hardware v2 is an open source RP2040/RP2350 PCB design by xywatch, published on GitHub. It is a 2-layer board measuring 33.8 × 46 mm, with 62 components from 33 distinct parts.

Its main chip is the ESP32-PICO-D4, from the RP2040/RP2350 family. Other key parts include the ME6211C33M5G-N, CP2102, BMA423, TP4054 and PCF8563BS. By type, the board carries 20 resistors, 14 capacitors, 6 ICs, 6 diodes, 4 transistors and 4 switches.

It belongs with the usb & debug tools designs in this gallery.

From the project

watchy hardware v2 with typec

We recommend using the CH340X version because:

It's cheaper Has a smaller package size Easier to solder Requires fewer external components

本项目是修改了watchy hardware v2将micro usb改成了typec接口, 针对串口芯片有两个版本: CP2102N CH340X 推荐使用 CH340X 版本, 因为CH340X便宜, 封装小, 易焊接, 外围电路少.

Watchy hardware v2, from the project README
From the project README

Main components on the Watchy hardware v2

ESP32-PICO-D4ME6211C33M5G-NCP2102BMA423TP4054PCF8563BS

Watchy hardware v2 bill of materials (BOM)

62 components, 33 distinct parts.

QtyPartRefs
1
ESP32-PICO-D4
U1
1
ME6211C33M5G-N
U2
1
CP2102
U3
1
BMA423
U4
1
TP4054
U5
1
PCF8563BS
U6
1
Vibration_Motor
M1
1
AO3400A
Q1
1
UMH3N
Q2
1
CJ2301
Q4
1
S8050
Q5
1
32.768KHz
Y1
1
FPC24(0.5MM)
J1
1
Conn_01x04
J2
1
Battery
J3
1
SWRA117D
AE1
4
BTN
SW1, SW2, SW3, SW4
1
USB_C_Receptacle_USB2.0_14P
TYPEC1
4
MBR0530
D1, D2, D3, D4
1
LED
D5
Show 13 more
QtyPartRefs
1
1N4001
D6
1
10uH 1A
L1
2
100nF
C1, C14
7
1uF/50V
C2, C5, C6, C7, C8, C9, C10
3
4.7uF/50V
C3, C4, C12
2
4.7uF
C11, C13
9
10K
R1, R4, R5, R6, R7, R8, R10, R14 +1
2
4.7K
R2, R3
1
3
R9
1
680K
R11
4
100K
R12, R13, R19, R20
2
1K
R16, R17
1
220K
R18

Watchy hardware v2 design files

The KiCad project lives in the xywatch/watchy-hardware-v2 repository on GitHub; these links point at the commit this page was built from.

Watchy hardware v2: common questions

What microcontroller does the Watchy hardware v2 use?

The Watchy hardware v2 is built around the ESP32-PICO-D4, from the RP2040/RP2350 family.

How big is the Watchy hardware v2 PCB?

The Watchy hardware v2 measures 33.8 × 46 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Watchy hardware v2?

62 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Watchy hardware v2 design files?

From the xywatch/watchy-hardware-v2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Watchy hardware v2 design in my own project?

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

Can I test firmware for the Watchy hardware v2 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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