HardLabs

Click clack

adamf·click-clack·kicad/click-clack.kicad_sch

Click clack
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About the Click clack PCB

Click clack is an open source ESP32 PCB design by adamf, published on GitHub under the MIT license. It is a board, with 17 components from 16 distinct parts.

Its main chip is the ESP32-S3-DevKitC, from the ESP32 family. Other key parts include the TP4056 USB-C and MT3608 boost 5V. By type, the board carries 7 switches, 3 ICs, 3 resistors, 1 battery holder and 1 buzzer.

It belongs with the displays & leds and power & battery designs in this gallery.

From the project

OLED chess clock

A Chronos-style chess clock built on ESP32-S3 with dual SPI OLEDs and Cherry MX switches.

- MCU: ESP32-S3-WROOM-1 DevKitC - Displays: 2× 2.42" SSD1309 128×64 SPI OLED - Switches: 3× Cherry MX (2 clock buttons + 1 center button, Chronos-style) - Power: 1S LiPo + USB-C TP4056 + MT3608 boost, with a back-panel power switch - Buzzer: passive piezo driven from 5 V via a 2N7000

Main components on the Click clack

ESP32-S3-DevKitCTP4056 USB-CMT3608 boost 5V

Click clack bill of materials (BOM)

17 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-DevKitC
U1
1
TP4056 USB-C
U2
1
MT3608 boost 5V
U3
1
—
BT1
1
PS1240P02BT
TDK
BZ1
1
SSD1309 2.42" P1
DS1
1
SSD1309 2.42" P2
DS2
1
MX1A-11NW
P1 (left paddle)
Cherry
SW1
1
MX1A-11NW
P2 (right paddle)
Cherry
SW2
1
MX1A-11NW
Mode
Cherry
SW3
1
Set
SW4
1
Up
SW5
1
Down
SW6
1
Center/Reset
SW7
2
CFR-25JB-52-100K
100k
Yageo
R1, R2
1
CFR-25JB-52-220R
220
Yageo
R3

Click clack design files

The KiCad project lives in the adamf/click-clack repository on GitHub; these links point at the commit this page was built from.

Click clack: common questions

What microcontroller does the Click clack use?

The Click clack is built around the ESP32-S3-DevKitC, from the ESP32 family.

How many components are on the Click clack?

17 components, from 16 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 Click clack design files?

From the adamf/click-clack repository on GitHub, which has the schematic and the BOM; the links under Design files point to each one.

Can I use the Click clack design in my own project?

Yes, under the terms of its MIT license, which adamf chose for the repository.

Can I test firmware for the Click clack 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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