Pcb2

Hardware

• My sensor (Diagram)
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• My sensor (On shaker)
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5G Connection

• Sensor connects to 5G via ethernet CPE access point
• Connects to a device connected directly to the 5G core server
  • This port is connected to an ethernet port in the lab, the local breakout port (LBO)

MCU

• WT32 - all important info below
  • https://github.com/egnor/wt32-eth01 (Guide)
    • most helpful for setup, tricks for WT32
    • HOW TO PROGRAM -> program mode vs run mode (IO0)
  • https://en.wireless-tag.com/product-item-2.html (INFO)

Accelerometer

All read via SPI (analog sensor add ADC)

• ICM42688-P
  • Custom PCB (datasheet pg. 21 typical operating circuit)
    • Included in files
    • Easy for me to order more, just contact me
  • https://invensense.tdk.com/products/motion-tracking/6-axis/icm-42688-p/ (INFO)
  • https://invensense.tdk.com/wp-content/uploads/2020/04/ds-000347_icm-42688-p-datasheet.pdf (DATASHEET)

Software

Libraries

All info based on register functions from accelerometer datasheets

• ICM42688-P
  • mainly based on https://github.com/finani/ICM42688
  • some changes to try to make SPI reads faster and match some functions to my other accelerometer libraries
  • did some work to get FIFO working to try for 32 kHz output
  • tested and working with 5G and ethernet at 16kHz ODR with interrupt method

Platformio/ESP32

• Used for code uploading
  • https://randomnerdtutorials.com/vs-code-platformio-ide-esp32-esp8266-arduino/
    • GOOD GUIDE - platformio for esp32 install and setup
  • https://platformio.org/install
  • https://docs.platformio.org/en/latest/boards/espressif32/wt32-eth01.html?utm_source=platformio&utm_medium=piohome
    • WT32 board setup (select for board in platformio)

Receiver

• Require python and matplotlib library (rest of libraries should be built in)

Setup

• Follow platformio setup
• Setup WT32 for programming per the guide
• Code should be okay to upload to sensor
  • sensor
    • set IP address and port number of receiver
  • receiver
    • match port number to sensor
• Change to run mode and connect to a python reader

FOR SENSOR

• Needs valid network info (reader IP address and port)
• Sensor settings for Hz and range are set via code still I think for ICM, controls need to be finished
• 16kHz max ODR for SPI without FIFO right now

FOR RECEIVER

• Needs port set for same as reader
• Needs sensor on and running first

Lathe Tool Holder Previous Works

• Bleicher 2018, 2020, 2023 (Milling)
  • Schorghofer 2019
  • Ramsauer 2021 (not much sensor info added here)

Main Changes

• Mounting (tool holder)
  • machine considerations (chips, coolant, heat)
  • cpe placement / battery life
• Read selected sensors
• Rec./Controller updates + database implementation
• Sensor connection / reconnection handling