Profilometer Probe

Device was created as part of a bachelor's thesis at BUT VUT 2022/2023 named Probe for Determining the Surface Condition of Small Diameter Barrels

Detailed description of device design and implementation is inside thesis

Hardware

Models

• All 3D printable models are located inside Models folder
• Models are designed to be printed with standard 2mm layer height
• When slicing be sure to print outer walls first to make print more accurate

Assembly

• All screws are size M3
• Assembly should be done accordingly

PCB

• PCB should be two sided with 1.6mm width
• Design files are created in KiCad

Components

• Development board: Nucleo L432KC
• Camera: ArduCam mini 5MP Plus
• Distance sensor: Pimoroni LV53L1X
• Complete list of components and connectors for probe can be found inside HW/Parts.md

Firmware for profilometer probe

Build

• Build using Makefile inside Firmware folder (dependency: arm-none-eabi)
• Flash onto hardware using flash option for make command $ make flash

Usage

• Connect probe to pc using usb c cable and firmware will start sending sending data automatically

Documentation

• Create documentation using 'doc' option of Makefile '$ make doc'

Software for receiving data

Build

• Build using Makefile inside Receiver folder

Usage

• Has to be run with sudo permissions to correctly access USB CDC port.
• '$ sudo ./main -p [-s Save received jpeg to files] [-r Print raw received CDC data to standard output]'
• Prefer running with optional -s command for ability to inspect already captured images

Documentation

• Create documentation using 'doc' option of Makefile '$ make doc'

TODO

• Process image and filter only laser line from it
• Use precessed data to determine depth or height of irregularities