GPS Clock
About the GPS Clock PCB
GPS Clock is an open source STM32 PCB design by nseuf, published on GitHub. It is a 4-layer board measuring 182.5 × 62 mm, with 130 components from 40 distinct parts.
Its main chip is the STM32G070RBTX, from the STM32 family. Other key parts include the MIC5365-3.3YD5, CP2104, UCC3803DTR, 74HC595 and TU10-F. By type, the board carries 61 transistors, 23 capacitors, 17 resistors, 13 ICs, 3 inductors and 2 connectors.
It belongs with the displays & leds and rf & radio designs in this gallery.
From the project
A GPS-powered precision desk clock that uses nixie tubes
Main components on the GPS Clock
GPS Clock bill of materials (BOM)
130 components, 40 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MIC5365-3.3YD5 | SOT-23-5 | U1 |
| 1 | CP2104 | QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm | U2 |
| 1 | STM32G070RBTX STM32G070RBTx | LQFP-64_10x10mm_P0.5mm | U3 |
| 1 | UCC3803DTR UCC3803 | D0008A_L | U4 |
| 8 | 74HC595 | SOIC-16W_5.3x10.2mm_P1.27mm | U5, U6, U7, U8, U9, U10, U11, U12 |
| 1 | TU10-F | TU10-F | U13 |
| 1 | FDS2672CT-ND FDS2672CT | SOIC-8_3.9x4.9mm_P1.27mm | Q2 |
| 60 | BSS127S | SOT-23 | Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10 +52 |
| 1 | 32KHZ768 32kHz768 | Crystal_SMD_2012-2Pin_2.0x1.2mm | X1 |
| 1 | CONN_01X03_PIN Conn_01x03_Pin | Molex_PicoBlade_53261-0371_1x03-1MP_P1.25mm_Horizontal | J1 |
| 1 | USB_C_RECEPTACLE_USB2.0_14P USB_C_Receptacle_USB2.0_14P | USB-C-SMD_U263-241N-4BQC02 | J3 |
| 1 | ~ | BAT-SMD_MY-1220-03 | BT2 |
| 6 | IN-12b | IN-12b | N1, N2, N3, N4, N5, N6 |
| 1 | SW_Push | SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | LED | D_0603_1608Metric | D1 |
| 1 | ES1D | D_SMA | D2 |
| 2 | BKP2125HS600-T 60ohm 100Mhz | R_0805_2012Metric | L1, L3 |
| 1 | 7447709330 33uH | WE-PD_1210 | L2 |
| 4 | 4U7 4u7 | C_0603_1608Metric | C1, C2, C3, C24 |
| 4 | 100N 100n | C_0402_1005Metric | C4, C6, C9, C23 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 10P 10p | C_0402_1005Metric | C5, C7 |
| 2 | EMK325ABJ107MM-P 100uF 16v | C_1210_3225Metric | C10, C15 |
| 1 | C0805C104K3RACTU 0.1uF | C_0805_2012Metric | C11 |
| 1 | C0805C221M5RACTU 220pF | C_0805_2012Metric | C12 |
| 1 | CL21C431JBANNNC 430pF | C_0805_2012Metric | C13 |
| 1 | C0805C104K3RACTU 0.1uF 16v | C_0805_2012Metric | C14 |
| 1 | C0805C102M5RACTU 1nF | C_0805_2012Metric | C16 |
| 1 | C0603C561JAGAC7867 560pF 250v | C_0805_2012Metric | C17 |
| 1 | C0805C101JAGAC7800 100pF 250v | C_0805_2012Metric | C18 |
| 2 | C4532X7T2E105M250KE 1uF 250v | C_1812_4532Metric | C19, C20 |
| 2 | CGA4J3X7T2E104M125AE 0.1uF 250v | C_0805_2012Metric | C21, C22 |
| 2 | 10K 10k | R_0603_1608Metric | R1, R10 |
| 3 | 5K1 5k1 | R_0402_1005Metric | R2, R5, R6 |
| 1 | RC0805FR-0760K4L 60.4k | R_0805_2012Metric | R9 |
| 1 | RC0805FR-074K12L 4.12k | R_0805_2012Metric | R12 |
| 1 | RC0805FR-071KL 1k | R_0805_2012Metric | R13 |
| 1 | ERJ-6DSFR10V 0.1 1/2W | R_0805_2012Metric | R14 |
| 1 | RC0805FR-07634KL 634k | R_0805_2012Metric | R15 |
| 1 | RC0805FR-077K68L 7.68k | R_0805_2012Metric | R16 |
| 6 | 18K 18k | R_1812_4532Metric | R17, R18, R19, R20, R21, R22 |
GPS Clock design files
The KiCad project lives in the nseuf/NixieTubeClock repository on GitHub; these links point at the commit this page was built from.
GPS Clock: common questions
What microcontroller does the GPS Clock use?
The GPS Clock is built around the STM32G070RBTX, from the STM32 family.
How big is the GPS Clock PCB?
The GPS Clock measures 182.5 × 62 mm, has 4 copper layers and is 1.58 mm thick.
How many components are on the GPS Clock?
130 components, from 40 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 GPS Clock design files?
From the nseuf/NixieTubeClock 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 GPS Clock design in my own project?
The repository has no license, so all rights stay with nseuf. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the GPS Clock without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
More boards in NixieTubeClock
Similar boards
STM32LumenPnP Motherboard
opulo-inc
149 × 95 mm296 parts4LCC-BY-SA-4.03.7k
STM32Type g
google
169 × 30 mm24 parts2LApache-2.02.9k
STM32Main panel
234 × 84 mm26 parts4LApache-2.02.9k
STM32Base
52.3 × 52.3 mm36 parts2LApache-2.02.9k
STM32Type a
150 × 30 mm14 parts2LApache-2.02.9k
STM32Type c
188 × 30 mm17 parts2LApache-2.02.9k