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4 layers208 × 118 mmSolenoidEngine4, the printed circuit board in 3D

My 4th attempt (though the first public one) at building a 4-cylinder USB-powered solenoid engine desk ornament.

Size
208 × 118 mm
Copper layers
4
Thickness
1.6 mm
Parts
121
Nets
94
Pads
322
Tracks, vias
475, 61
Pours
3
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
1 Aug 2026
Updated
18 Aug 2026

Overview

SolenoidEngine4 is an open-source printed circuit board by atom-dispencer, from the atom-dispencer/SolenoidEngine4 repository on GitHub. It is a 4-layer board of 208 × 118 mm with 121 parts on 94 nets, routed with 475 tracks and 61 vias.

It is built around the STM32C092FCP6, LDL1117S33R and STLINK-V3MODS, with the STH315N10F7-2, SMC30J18A and TB005-762-02BE among its other parts. Its parts include 35 resistors, 26 capacitors, 12 diodes, 10 connectors and 8 ICs. It belongs with the STM32 boards of this library.

Main components

6

Parts

121
QtyValueFootprintReferences
20SolderJumper_2_OpenJumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mmJP1, JP2, JP3, JP4, JP5, JP10, JP11, JP12, JP13, JP14, JP15, JP16, JP17, JP18, JP19, JP20 +4
12100nCapacitor_SMD:C_0805_2012MetricC5, C99, C100, C101, C102, C103, C104, C105, C106, C107, C108, C109
11100kResistor_SMD:R_0805_2012MetricR7, R10, R12, R13, R16, R17, R21, R22, R25, R26, R37
104u7Capacitor_SMD:C_0805_2012MetricC1, C119, C121, C122, C123, C124, C125, C126, C127, C128
61kResistor_SMD:R_0805_2012MetricR8, R14, R19, R24, R38, R39
6220Resistor_SMD:R_0805_2012MetricR32, R33, R34, R35, R36, R40
6LEDDiode_SMD:D_0805_2012MetricD5, D7, D9, D11, D17, D18
6Screw_Terminal_01x02footprints:TB005-762-02BEJ3, J7, J10, J12, J13, J14
510Resistor_SMD:R_0805_2012MetricR5, R6, R18, R23, R27
5STH315N10F7-2footprints:STH315N10F72Q1, Q2, Q3, Q4, Q5
5TPS2819DBVTfootprints:SOT95P280X145-5NIC1, IC3, IC4, IC5, IC6
410kResistor_SMD:R_0805_2012MetricR28, R29, R30, R31
4SMC30J18Afootprints:DIOM8059X265ND3, D4, D6, D8
4TB005-762-02BEfootprints:TB005-762-02BEJ15, J16, J17, J18
34k7Resistor_SMD:R_0805_2012MetricR49, R113, R114
2220uCapacitor_SMD:CP_Elec_10x10C4, C117
2DDiode_SMD:D_0805_2012MetricD1, D2
1100nCapacitor_SMD:C_0603_1608MetricC98
11uCapacitor_SMD:C_0805_2012MetricC120
1LDL1117S33Rfootprints:SOT230P700X180-4NIC7
1STLINK-V3MODSfootprints:STLINK_V3MODSU1
1STM32C092FCP6footprints:SOP65P640X120-20NIC2

The 116 most common of 121 parts.

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Questions

How big is the SolenoidEngine4 PCB?

It measures 208 × 118 mm and has 4 copper layers, 1.6 mm thick.

What parts does the SolenoidEngine4 use?

121 parts, built around the STM32C092FCP6, LDL1117S33R, STLINK-V3MODS and STH315N10F7-2. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the SolenoidEngine4 KiCad files?

From the atom-dispencer/SolenoidEngine4 repository on GitHub, at the commit this page was made from: the board is pcb/SolenoidEngine4.kicad_pcb and its schematic pcb/SolenoidEngine4.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the SolenoidEngine4 design in my own project?

Its repository states no licence, so its author keeps all rights: ask atom-dispencer before reusing the design.