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The electronics assembly involves mounting the OSSM Control Board to its frame mount and securing the protective cover. This step protects the control board and prepares it for wiring in the next section.

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Required Components and Tools

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Components

ComponentCountSpecification / Notes
OSSM Control Board1The electronics PCB
PCB Extrusion Frame Mount1The mount for the control board
M3 Bolts (Board Mount)2Typically 8mm to 15mm length
Cover (Electronics Board)1Protective cover for the electronics board
M3 Bolts (Elec. Cover)4Typically 8mm to 15mm length

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Tools

ToolCountSpecification / Notes
2.5 mm Hex1To fit the M3 bolts
The M3 bolts for both the board mount and cover can be between 8mm and 15mm in length. Choose a length that provides secure mounting without protruding excessively.

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Step-by-Step Assembly

1

Mount the Control Board

Take the OSSM Control Board and the PCB Extrusion Frame Mount.The board will slide under a small protrusion on the mount. It’s a tight fit, so you may need to gently push it into place.
If the board doesn’t slide in easily, check that it’s oriented correctly. The protrusion on the mount should engage with the corresponding feature on the board.
The control board is fully seated under the protrusion on the mount and sits flush against the mounting surface.
2

Secure the Board

Use the two M3 bolts to secure the control board to its mount.Tighten them just enough to hold the board in place and prevent it from moving.
Do not overtighten the bolts. Excessive torque can damage the PCB or strip the threads in the mount. The board should be secure but not under excessive stress.
The control board is securely mounted and does not move when gently pressed. Both M3 bolts are tightened evenly.
3

Attach the Cover

Place the Cover (Electronics Board) over the assembly.Ensure the cover aligns properly with the mounting holes and sits flush on the mount.
The cover protects the control board from dust, debris, and accidental contact during operation.
4

Secure the Cover

Use the remaining four M3 bolts to secure the cover.Tighten the bolts evenly to ensure the cover sits flat and provides proper protection.
Tighten the bolts in a cross pattern (opposite corners first) to ensure even pressure and prevent the cover from warping.
The cover is securely attached with all four M3 bolts tightened evenly. The cover should sit flush against the mount with no gaps or misalignment.

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Next Steps

With the electronics board mounted and covered, you’re ready to proceed with wiring the voltage and data cables in the next section of the build guide.