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Gnss-7-seg clock

Tosainu·gnss-7-seg-clock·hardware/gnss-7-seg-clock.kicad_pcb

Gnss-7-seg clock PCB layout, top view — open source RP2040/RP2350 board by Tosainu
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About the Gnss-7-seg clock PCB

Gnss-7-seg clock is an open source RP2040/RP2350 PCB design by Tosainu, published on GitHub under the MIT license. It is a 2-layer board measuring 225 × 63.5 mm, with 73 components from 27 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the SA15-11GWA, TLC5925IDWR, TLV75533PDBVR, W25Q32JVSS and MAX-M10S. By type, the board carries 22 resistors, 21 capacitors, 13 ICs, 7 diodes, 5 switches and 3 connectors.

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

From the project

GNSS-powered, seven-segment table clock

GNSS-powered, seven-segment table clock.

https://github.com/user-attachments/assets/9b2d0560-d879-4ddb-b99d-07a6e9839360

Full video: https://www.youtube.com/watch?v=Y1P_iDvq4bk

Pre-build firmware files are available on the release page. Thanks to the RP2040 Bootrom, flashing the firmware requires no special tool. Connect the board to the PC using the USB-C cable, while holding the BOOT button (SW2). Once the RPI-RP2 drive appears on the PC, copy gnss-7-seg-clock.uf2 there. The board will automatically be rebooted as soon as it finishes writing to Flash.

Gnss-7-seg clock, from the project README
From the project README

Main components on the Gnss-7-seg clock

SA15-11GWATLC5925IDWRRP2040TLV75533PDBVRW25Q32JVSSMAX-M10S

Gnss-7-seg clock bill of materials (BOM)

73 components, 27 distinct parts.

QtyPartRefs
6
SA15-11GWA
U1, U2, U3, U4, U5, U6
3
TLC5925IDWR
U7, U8, U9
1
RP2040
U10
1
TLV75533PDBVR
U11
1
W25Q32JVSS
U12
1
MAX-M10S
U13
1
ABM8-272-T3
Y1
1
USB4105-GF-A
J1
1
Conn_Coaxial
J2
1
Conn_01x03
J3
5
SW_Push
SW1, SW2, SW3, SW4, SW5
1
PESD0402-140
D1
6
LED
D2, D3, D4, D5, D6, D7
1
LQG15HS27NJ02D
L1
13
0.1u
C1, C2, C4, C5, C6, C7, C8, C9 +5
2
1u
C3, C11
2
10u
C12, C13
2
15p
C15, C16
1
10n
C20
1
47p
C21
Show 7 more
QtyPartRefs
3
2.2k
R1, R2, R3
6
10k
R4, R5, R12, R14, R15, R16
2
5.1k
R6, R7
2
27
R8, R9
2
1k
R10, R13
1
10
R11
6
470
R17, R18, R19, R20, R21, R22

Gnss-7-seg clock design files

The KiCad project lives in the Tosainu/gnss-7-seg-clock repository on GitHub; these links point at the commit this page was built from.

Gnss-7-seg clock: common questions

What microcontroller does the Gnss-7-seg clock use?

The Gnss-7-seg clock is built around the RP2040, from the RP2040/RP2350 family.

How big is the Gnss-7-seg clock PCB?

The Gnss-7-seg clock measures 225 × 63.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Gnss-7-seg clock?

73 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Gnss-7-seg clock design files?

From the Tosainu/gnss-7-seg-clock repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Gnss-7-seg clock design in my own project?

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

Can I test firmware for the Gnss-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 RP2040/RP2350 firmware against it before you order a PCB.

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