HardLabs

Digital clock72

marino222·digital-clock72·pcb/node-pcb/node-pcb.kicad_pcb

Digital clock72 PCB layout, top view — open source RP2040/RP2350 board by marino222

About the Digital clock72 PCB

Digital clock72 is an open source RP2040/RP2350 PCB design by marino222, published on GitHub under the MIT license. It is a 4-layer board measuring 44 × 44 mm, with 46 components from 22 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the AP2112K-3.3TRG1, W25Q32JVSSIQ and THVD1450DR. By type, the board carries 20 capacitors, 13 resistors, 4 ICs, 4 connectors, 2 diodes and 1 transistor.

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

From the project

Kinetic Art Clock consisting of LCD displays

Each pixel node is one self contained board carrying one microcontroller and one round LCD, wired to its neighbors over a shared bus. The full array is this same board built N times, with a target of 72 nodes. This README describes one of the nodes.

- An RP2040 microcontroller and an external flash chip - A connector for the GC9A01 round LCD - An RS485 transceiver and two bus connectors so boards can be daisy chained - Power regulation, with separate rails for the logic and the display backlight - USB-C and/or SWD pads for flashing firmware

Digital clock72, from the project README
From the project README

Main components on the Digital clock72

AP2112K-3.3TRG1W25Q32JVSSIQRP2040THVD1450DR

Digital clock72 bill of materials (BOM)

46 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AP2112K-3.3TRG1
AP2112K-3.3
Diodes Incorporated
U1
1
W25Q32JVSSIQ
Winbond Elec
U2
1
RP2040
Raspberry Pi
U3
1
THVD1450DR
Texas Instruments
U4
1
S8050 J3Y(RANGE:200-350)
S8050
Jiangsu Changjing Electronics Technology Co., Ltd.
Q1
1
ABM8-272-T3
Abracon LLC
Y1
1
TYPE-C-31-M-12
Korean Hroparts Elec
J1
2
BM08B-GHS-TBT(LF)(SN)
JST
J2, J3
1
AFC11-S12ICA-00
JUSHUO
J5
1
TS-1187A-B-A-B
XKB Connection
SW1
2
B5819W SL
B5819WSL
Jiangsu Changjing Electronics Technology Co., Ltd.
D1, D2
11
CL05B104KO5NNNC
100nF
Samsung Electro-Mechanics
C1, C2, C3, C4, C5, C6, C7, C8 +3
4
GRM21BR61C106KE15L
10uF
Murata Electronics
C10, C11, C12, C16
3
CL05A105KA5NQNC
1uF
Samsung Electro-Mechanics
C13, C14, C19
2
0402CG150J500NT
15pF
FH (Guangdong Fenghua Advanced Tech)
C17, C18
2
0603WAF5101T5E
5.1k
UNI-ROYAL(Uniroyal Elec)
R1, R2
2
0402WGF330JTCE
33
UNI-ROYAL(Uniroyal Elec)
R3, R4
4
0402WGF1002TCE
10k
UNI-ROYAL(Uniroyal Elec)
R5, R9, R10, R13
2
0402WGF1001TCE
1k
UNI-ROYAL(Uniroyal Elec)
R6, R7
1
0402WGF1200TCE
120
UNI-ROYAL(Uniroyal Elec)
R8
Show 2 more
QtyPartRefs
1
0805W8F470JT5E
47
UNI-ROYAL(Uniroyal Elec)
R11
1
0402WGF2201TCE
2.2k
UNI-ROYAL(Uniroyal Elec)
R12

Digital clock72 design files

The KiCad project lives in the marino222/digital-clock72 repository on GitHub; these links point at the commit this page was built from.

Digital clock72: common questions

What microcontroller does the Digital clock72 use?

The Digital clock72 is built around the RP2040, from the RP2040/RP2350 family.

How big is the Digital clock72 PCB?

The Digital clock72 measures 44 × 44 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the Digital clock72?

46 components, from 22 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 Digital clock72 design files?

From the marino222/digital-clock72 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 Digital clock72 design in my own project?

Yes, under the terms of its MIT license, which marino222 chose for the repository.

Can I test firmware for the Digital clock72 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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