4 layers

LightProcessor preFreeRoute
K0iNguyen/LightProcessor
PCB code and design for Optical chemical potential mapping research at Zeng Lab, Purdue University.
131 parts
Boards in 2 GitHub repositories, designed in KiCad, that use the PJ-202B by CUI (-25℃~+85℃ 2.5A 2.5mm 24V 6.5mm - DC Power Connectors ROHS). See how each wires it, with its parts, size, README and files; the PJ-202B’s symbol, footprint and pinout are on its own page.

K0iNguyen/LightProcessor
PCB code and design for Optical chemical potential mapping research at Zeng Lab, Purdue University.

kcsmith-uiuc/TubePinchValve
Software and Build Files for the Smith Lab @ UIUC's Low-Volume, Fluid-Switching Device