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@dmalawey
Last active February 10, 2021 16:40
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my log of changes to be released with latest CAD model for SCUTTLE

Updates from V2.3 to V2.4 (not yet released)

  • wheel bracket RH with properly oriented scuttle logo
  • wheel brackets M3 holes increased to 3.3mm diameter for improved thread clearance and flush fit
  • battery pack - add compliant fitment for Anderson connectors
  • encoders - add labels to pins
  • encoder bracket - increase clearance so encoder board always fits between datum bumps
  • battery bracket thin wall increased (1.1mm to 1.5) for strength

Updates from V2.2 to V2.3 (released 2020.11)

  • Change CPU to Raspberry Pi (beaglebone is still compatible)
  • M2.5 screws added to PCBs
    • motor driver pcb
    • raspi pcb
    • inserted into battery tray
  • 3D printed parts use version numbers (upright) to indicate print orientation
  • Brackets clips extended to improve snap onto rods
    • battery bracket
    • cpu bracket
    • motor driver bracket
  • Chassis tubes offer more space
    • tubes are extended to 165mm
    • chassis tube brackets reduced in material and print time
    • tube wall thickness reduced to 1.0mm - saving cost & weight
  • Battery bracket fully redesigned
    • mass is reduced by 35%
    • access battery cells without tools
    • accomodate Battery Management Circuit if desired
    • power switch and ports are on same face
  • Heat inserts added to wheel bracket assemlies & battery bracket
  • Fastener names are simplified (screw, size, length)
  • Add physical labels indicating specs of OTS parts
  • Enhance detail of battery tray model
  • Convert solid bodies to parametric geometry for
    • Axle screw
    • aluminum chassis tubes
    • circuit board (i2c pcb) redrawn in parametric geometry
  • wheels redesigned to reflect true measurements (formerly imported generic wheel)
  • Commonize plastic material properties for printed parts
  • Add header pins to motor driver PCB
  • Design HTD-5M timing belt (approximation) and include in wheel assembly
  • SCUTTLE logo added to the encoder bracket
  • Add geometrically accurate SD card into raspi
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