4 layers208 × 118 mm

SolenoidEngine4
atom-dispencer/SolenoidEngine4
My 4th attempt (though the first public one) at building a 4-cylinder USB-powered solenoid engine desk ornament.
121 parts
Boards in 1 GitHub repository, designed in KiCad, that use the SMC30J18A by STMicroelectronics. See how each wires it, with its parts, size, README and files; the SMC30J18A’s symbol, footprint and pinout are on its own page.

atom-dispencer/SolenoidEngine4
My 4th attempt (though the first public one) at building a 4-cylinder USB-powered solenoid engine desk ornament.