This BoM lists the hardware used or expected by the Autoprober prototype. Product availability changes, so the Amazon links below are search links, not pinned endorsements of a specific seller or ASIN. Verify dimensions, voltage, connector type, and return policy before buying.
Category
Part
Notes
Amazon Search
Motion platform
Genmitsu 3018-PROVer V2 CNC Router, machine-only variant
GRBL-compatible CNC platform. The project expects USB serial control and working hard limits.
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Vision
Plugable USB Digital Microscope, or similar lightweight UVC microscope
Tested class is a USB 2.0 UVC microscope exposed as /dev/video0, 1600x1200 snapshot capable.
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Measurement and safety readout
Siglent SDS1104X-E oscilloscope
Used over LAN/SCPI. Channel 4 reads optical endstop voltage; Channel 1 is reserved for pogo measurement.
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Power control
UseeLink Matter smart power strip, or compatible controllable outlet strip
Used for lab outlet state/control. Dashboard support currently assumes Matter chip-tool behavior.
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Control host
Linux PC, mini PC, or laptop
Needs USB for CNC/microscope, LAN access to scope, Python runtime, and enough CPU for image capture/stitching.
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Probe And Safety Assembly
Category
Part
Notes
Amazon Search
Contact probe
Spring-loaded pogo pins with receptacles
Choose a tip shape and travel suitable for the target. Record dimensions before editing CAD.
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Contact detection
5V optical endstop module, G/S/V style
Powered from an external 5V supply. Output is read by oscilloscope Channel 4. Do not wire this into the CNC probe header.
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Compliance
Light compression spring
Provides controlled travel for the floating pogo carriage. Pen springs can work for prototypes; measure spring force before real boards.
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Pogo signal cable
BNC female to bare-wire RG316 pigtail
Carries pogo measurement path to oscilloscope Channel 1. Keep measurement path separate from contact detection.
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Scope probes/leads
Oscilloscope probes and ground leads
C4 probe tip goes to optical endstop output; C4 ground clips to endstop ground. C1 is for pogo measurement.
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Sensor power
5V USB wall charger
Powers the optical endstop externally. Use a stable supply.
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Sensor power pigtail
USB to bare-wire power cable
Used to feed 5V/GND to the optical endstop from the USB charger.
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Category
Part
Notes
Amazon Search
Custom toolhead
Printed fixed mount, sliding carriage, and endstop tabs
Printable STL files are in cad/. Verify microscope diameter, pogo dimensions, endstop location, and CNC clearance before use.
Not purchased
3D printer filament
PLA/PETG or suitable engineering filament
PETG or stronger material is preferable for parts under repeated stress.
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Board fixture
PCB clamps, low-profile hold-downs, or fixture plate
Target must not shift during imaging or probing. Keep clamps out of the microscope/probe travel path.
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Fasteners
M3 screw/nut/washer assortment
For printed mounts and fixture hardware. Confirm sizes against CAD before buying.
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Wires
Dupont jumper wires / silicone hookup wire
For low-voltage endstop wiring and prototype harnesses. Use strain relief.
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Non-Negotiable Wiring Notes
The CNC probe header is not used for the optical endstop.
The optical endstop is powered by an external 5V supply.
The optical endstop output is read on oscilloscope Channel 4.
Pogo measurement is separate and uses oscilloscope Channel 1.
Pn:P in GRBL status is ignored.Any Channel 4 trigger or ambiguous voltage is a stop condition.
Before Publishing Or Buying
Replace generic search links with exact products only after verifying fit and electrical compatibility.
Avoid affiliate links unless the project explicitly documents that policy.
Add photos or diagrams of the final assembled hardware if releasing a build guide.
Keep private target images and trial captures out of the release repository.