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OpenTimeWatch-1

OpenTimeWatch-Project·OpenTimeWatch-1

OpenTimeWatch-1 PCB layout, top view — open source ESP32 board by OpenTimeWatch-Project

About the OpenTimeWatch-1 PCB

OpenTimeWatch-1 is an open source ESP32 PCB design by OpenTimeWatch-Project, published on GitHub under the MIT license. It is a 2-layer board measuring 35 × 44 mm, with 41 components from 25 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the TP4056-42-ESOP8 and RT9701. By type, the board carries 12 capacitors, 11 resistors, 7 connectors, 4 switches, 3 ICs and 3 diodes.

It belongs with the wearables, sensors and iot & wireless designs in this gallery.

From the project

An ESP32 based smart watch (WIP)

An ESP32-S3 based open source smartwatch running OpenTimeWatch OS.

The OpenTimeWatch-1 is a DIY affordable smartwatch which can be used as a fitness tracker, home automation device, ethical hacking device and more! It contains a powerful ESP32-S3 dual core processor which unlocks even more potential for the watch and eqquiped with WiFi, bluetooth and an IR transmitter this watch can controll and communicate with a variety of devices. MPU6050 gives a sense of motion, the torch and the speaker gives more accesibility. The watch's software is very flexible and allows you to write your own…

OpenTimeWatch-1, from the project README
From the project README

Main components on the OpenTimeWatch-1

ESP32-S3-WROOM-1TP4056-42-ESOP8RT9701

OpenTimeWatch-1 bill of materials (BOM)

41 components, 25 distinct parts.

QtyPartRefs
1
ESP32-S3-WROOM-1
U1
1
TP4056-42-ESOP8
U2
1
RT9701
U3
1
Si2319CDS
Q1
1
1.44" LCD
J1
1
USB_B_Micro
J2
1
Speaker
J3
1
MPU6050
J4
1
Battery
J5
1
UART
J6
1
Heart Rate Sensor
J7
1
Right
SW1
1
Left down
SW2
1
Left up
SW3
1
SW_DIP_x01
SW4
1
Torch
D1
1
IR LED
D2
1
1N5819
D3
5
100nf
C1, C3, C6, C8, C10
2
10uf
C2, C4
Show 5 more
QtyPartRefs
3
22uf
C5, C7, C9
1
1uf
C11
1
10nf
C12
2
10K
R1, R3
9
100K
R2, R4, R5, R6, R7, R8, R9, R10 +1

OpenTimeWatch-1 design files

The KiCad project lives in the OpenTimeWatch-Project/OpenTimeWatch-1 repository on GitHub; these links point at the commit this page was built from.

OpenTimeWatch-1: common questions

What microcontroller does the OpenTimeWatch-1 use?

The OpenTimeWatch-1 is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the OpenTimeWatch-1 PCB?

The OpenTimeWatch-1 measures 35 × 44 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OpenTimeWatch-1?

41 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the OpenTimeWatch-1 design files?

From the OpenTimeWatch-Project/OpenTimeWatch-1 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the OpenTimeWatch-1 design in my own project?

Yes, under the terms of its MIT license, which OpenTimeWatch-Project chose for the repository.

Can I test firmware for the OpenTimeWatch-1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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