HardLabs

Led o clock

denouche·led-o-clock·pcb/led-o-clock.kicad_pcb

Led o clock PCB layout, top view — open source ESP32 board by denouche

About the Led o clock PCB

Led o clock is an open source ESP32 PCB design by denouche, published on GitHub. It is a 2-layer board measuring 49 × 35 mm, with 18 components from 14 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the AP7361C-33E. By type, the board carries 6 capacitors, 5 resistors, 2 ICs, 2 connectors, 2 switches and 1 inductor.

From the project

This folder contains the KiCad design files, manufacturing data, and documentation for the Led'o'clock custom board.

This folder contains the KiCad design files, manufacturing data, and documentation for the Led'o'clock custom board.

The board is built around the ESP32-C3 microcontroller. To optimize production costs, the surface-mount devices (SMD) are designed to be assembled by JLCPCB, but some manual soldering is required to complete the board.

The PCB is designed for partial assembly (SMD only) using JLCPCB's "Basic" parts.

Led o clock, from the project README
From the project README

Main components on the Led o clock

AP7361C-33EESP32-C3-WROOM-02

Led o clock bill of materials (BOM)

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

QtyPartRefs
1
AP7361C-33E
U1
1
ESP32-C3-WROOM-02
U2
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J1
1
C157929
Led ring
J4
1
IO9_BOOT
SW3
1
C720477
RST
SW4
1
C14709
FerriteBead_Small
FB1
3
10UF
10uF
C2, C4, C6
1
100NF
100nF
C3
1
1UF
1uF
C5
1
100UF
100uF
C11
2
5.1K
5.1k
R1, R5
2
10K
10k
R2, R3
1
330
R4

Led o clock design files

The KiCad project lives in the denouche/led-o-clock repository on GitHub; these links point at the commit this page was built from.

Led o clock: common questions

What microcontroller does the Led o clock use?

The Led o clock is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the Led o clock PCB?

The Led o clock measures 49 × 35 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Led o clock?

18 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 Led o clock design files?

From the denouche/led-o-clock 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 Led o clock design in my own project?

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

Can I test firmware for the Led o clock 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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