ShotClockProject
About the ShotClockProject PCB
ShotClockProject is an open source STM32 PCB design by NeusAap, published on GitHub. It is a 4-layer board measuring 71.8 × 71.8 mm, with 104 components from 50 distinct parts.
Its main chip is the C529338, from the STM32 family. Other key parts include the TP4056-42-ESOP8, C2798212, C24966, M74HC14YRM13TR and C157920. By type, the board carries 39 resistors, 29 capacitors, 10 ICs, 6 connectors, 6 diodes and 5 switches.
From the project
Shotclock hardware & software
Main components on the ShotClockProject
ShotClockProject bill of materials (BOM)
104 components, 50 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TP4056-42-ESOP8 TP4056-42-ESOP8_Rearanged | Texas_HSOP-8-1EP_3.9x4.9mm_P1.27mm | IC1 |
| 1 | C529338 STM32G070CBTx | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | C2798212 LD39015M33R | SOT-23-5 | U2 |
| 2 | C24966 TPS63000 | Texas_DRC0010J_Altered | U3, U4 |
| 1 | M74HC14YRM13TR STMicroelectronics | SOIC-14_3.9x8.7mm_P1.27mm | U5 |
| 4 | C157920 S6B-PH-K-S-(LF)(SN) | CONN-TH_6P-P2.00_S6B-PH-K-S-LF-SN | U6, U7, U8, U9 |
| 1 | C33903 Q_PMOS_SGD | TO-263-2 | Q1 |
| 3 | C111113 Q_NPN_BCE | SOT-23 | Q2, Q3, Q4 |
| 1 | C112972 16MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | C56816 Conn_01x06_Pin | PinHeader_1x06_P2.54mm_Horizontal | J1 |
| 1 | C3975190 Conn_ST_STDC14 | PinHeader_2x07_P1.27mm_Vertical_SMD | J2 |
| 1 | C160403 SM03B-SRSS-TB(LF)(SN)(P) JST | CONN-SMD_SM03B-SRSS-TB-LF-SN-P | J3 |
| 2 | C492410 Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Horizontal | J4, J7 |
| 1 | USB4120-03-C_REVA | GCT_USB4120-03-C_REVA_With3DModel | J6 |
| 1 | CY-SMD-9019-3040 CY(超音) | BUZ-SMD_L9.0-W9.0-P8.00-LS9.3_CY | BUZZER1 |
| 1 | TK-6580S-1 | SW-SMD_TK-6580S-1 | SW1 |
| 1 | C500057 SW_SPDT | SW_SPDT_PCM12_Upwards | SW2 |
| 3 | TK-6580S-2 | SW-SMD_TK-6580S-2 | SW3, SW4, SW5 |
| 1 | C264451 Orange LED | LED_0603_1608Metric | D1 |
| 3 | C72043 G_LED | LED_0603_1608Metric | D2, D4, D5 |
Show 30 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C128250 R_LED | LED_0603_1608Metric | D3 |
| 1 | C2128 1N4148 | D_SOD-323 | D6 |
| 1 | C127301 120R | L_0603_1608Metric | FB1 |
| 2 | C404494 2.2uH | L_Sunlord_SWPA3012S | L1, L2 |
| 2 | C15195 10n | C_0402_1005Metric | C1, C16 |
| 4 | C52923 1u | C_0402_1005Metric | C2, C3, C9, C12 |
| 1 | C23733 4700n | C_0402_1005Metric | C4 |
| 8 | C1525 100n | C_0402_1005Metric | C5, C6, C10, C11, C15, C27, C28, C29 |
| 2 | C1575 6p | C_0402_1005Metric | C7, C8 |
| 2 | C15525 10u | C_0402_1005Metric | C13, C14 |
| 2 | C1559 2.2p | C_0402_1005Metric | C17, C22 |
| 6 | C96446 10u | C_0603_1608Metric | C18, C19, C20, C23, C24, C25 |
| 2 | C1525 0.1u | C_0402_1005Metric | C21, C26 |
| 4 | C17168 0R | R_0402_1005Metric | R1, R2, R3, R4 |
| 2 | C25867 1.5k | R_0402_1005Metric | R5, R6 |
| 1 | C25076 130R | R_0402_1005Metric | R7 |
| 8 | C25744 10k | R_0402_1005Metric | R8, R19, R20, R31, R32, R33, R38, R39 |
| 3 | C25076 100R | R_0402_1005Metric | R9, R23, R27 |
| 1 | C27147 0.4R | R_0402_1005Metric | R10 |
| 3 | C25741 100k | R_0402_1005Metric | R11, R16, R17 |
| 5 | C105637 1k | R_0402_1005Metric | R12, R13, R14, R15, R35 |
| 1 | C25862 1k2 | R_0402_1005Metric | R18 |
| 1 | C25900 4780R | R_0402_1005Metric | R21 |
| 1 | C852935 86k6 | R_0402_1005Metric | R22 |
| 2 | C144787 1M | R_0402_1005Metric | R24, R28 |
| 1 | C185459 178k | R_0402_1005Metric | R25 |
| 2 | C25867 1k5 | R_0402_1005Metric | R26, R30 |
| 1 | C25745 110k | R_0402_1005Metric | R29 |
| 1 | C25102 300R | R_0402_1005Metric | R34 |
| 2 | C25905 5k1 | R_0402_1005Metric | R36, R37 |
ShotClockProject design files
The KiCad project lives in the NeusAap/ShotClock repository on GitHub; these links point at the commit this page was built from.
ShotClockProject: common questions
What microcontroller does the ShotClockProject use?
The ShotClockProject is built around the C529338, from the STM32 family.
How big is the ShotClockProject PCB?
The ShotClockProject measures 71.8 × 71.8 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the ShotClockProject?
104 components, from 50 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 ShotClockProject design files?
From the NeusAap/ShotClock 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 ShotClockProject design in my own project?
The repository has no license, so all rights stay with NeusAap. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ShotClockProject 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.
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