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7-seg clock

zOnlyKroks·pcb-consortium·Misc/7-seg-clock/7-seg-clock.kicad_pcb

7-seg clock PCB layout, top view — open source ESP32 board by zOnlyKroks

About the 7-seg clock PCB

7-seg clock is an open source ESP32 PCB design by zOnlyKroks, published on GitHub under the CC0-1.0 license. It is a 4-layer board measuring 76.2 × 70.3 mm, with 42 components from 30 distinct parts.

Its main chip is the ESP32-S3-MINI-1, from the ESP32 family. Other key parts include the APDS-9960, PRTR5V0U2X, TPS62160DSG, HDSP-7501 and MAX7221XWG. By type, the board carries 13 resistors, 11 ICs, 7 connectors, 5 capacitors, 2 switches and 2 diodes.

Main components on the 7-seg clock

ESP32-S3-MINI-1APDS-9960PRTR5V0U2XTPS62160DSGHDSP-7501MAX7221XWG

7-seg clock bill of materials (BOM)

42 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-MINI-1
U1
1
APDS-9960
U2
1
PRTR5V0U2X
U3
1
TPS62160DSG
U4
6
HDSP-7501
U5, U6, U8, U9, U10, U11
1
MAX7221XWG
MAX7221xWG
U12
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
1
CONN_01X12_PIN
Conn_01x12_Pin
J3
1
CONN_01X01_PIN
Conn_01x01_Pin
J4
3
CONN_01X02_PIN
Conn_01x02_Pin
J5, J6, J8
1
CONN_01X06_PIN
Conn_01x06_Pin
J7
1
C135341
500 mA
F1
1
C2837531
EN
SW2
1
SLW-66527511-SMT
SLW-66527511-SMT-TR
SW3
1
C98225
5V LED
D4
1
C98225
3.3V LED
D12
1
2.2 uH
L1
1
100NF
100nF
C2
2
1 uF
C6, C8
1
10 uF
C7
Show 10 more
QtyPartRefs
1
22 uF
C12
2
10K
10k
R1, R5
2
4.7K
4.7k
R3, R4
2
5.1K
5.1k
R6, R7
2
22
R8, R9
1
100K
100k
R11
1
562kΩ
R12
1
180kΩ
R13
1
150
R20
1
330
R21

7-seg clock design files

The KiCad project lives in the zOnlyKroks/pcb-consortium repository on GitHub; these links point at the commit this page was built from.

7-seg clock: common questions

What microcontroller does the 7-seg clock use?

The 7-seg clock is built around the ESP32-S3-MINI-1, from the ESP32 family.

How big is the 7-seg clock PCB?

The 7-seg clock measures 76.2 × 70.3 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the 7-seg clock?

42 components, from 30 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 7-seg clock design files?

From the zOnlyKroks/pcb-consortium 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 7-seg clock design in my own project?

Yes, under the terms of its CC0-1.0 license, which zOnlyKroks chose for the repository.

Can I test firmware for the 7-seg 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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