Structure Sensor 3 - Firmware Release Notes

• Firmware 1.3
• Firmware 1.2
• Firmware 1.1
• Firmware 1.0

Firmware 1.3

Release Date: June 4th, 2025

Features:

• Added new Micro Controller Unit (MCU) monitoring tools.
• Added new firmware corruption checks.

Fixes:

• Fixed an issue where the hardware or firmware version would not be reported correctly when using Structure Sensor 3.
• Fixed an issue where the Structure Sensor 3 would lock if it was charging for too long.
• Fixed an issue where the Structure Sensor 3 would become unresponsive for up to several days.
• Corrected an issue where State Of Charge (SOC) reporting would return incorrect values.

Firmware 1.2

Released: Feb 24th, 2025

Features

• Boottime improvements: 500ms faster for iOS devices.
• Persistent camera settings between starting & stopping data streams.
• Reduce the time a sensor takes to turn off after unplugged from host device from ~1.5 to ~0.5 seconds.
• Add ability to read camera temperature & send to host.
• Increase robustness of FW updates.

• Improves connectivity and streaming reliability with both SDK 3.2 and 3.3

  
  

Fixes

• Fix for the sensor stopping streaming after any partition read or write, especially important for calibration.
• Fix to allow battery to charge to full while sensor is warm (32.5C - 45C) -was stuck at 90% before.
• Prevent sensor from disconnecting from lightning iPads during extended use.

Firmware 1.1

Released: November 21st, 2024

• New: Auto Exposure functionality
• New: Recovery mode
• New: HW version reporting
• Updated LED Status lights to final version (Read more here)
• Changed HDR implementation to percentage, improving performance and ease of use
• Improved battery SOC reporting

Bug Fixes:

• Fixed FW update reporting bug
• Fixed a Sensor 3 memory overflow bug
• Improved streaming in Structure App

Known Issues:

• Long Initialization times: 5-15seconds
• Sensor is not always detected by apps:
  • Workaround:
    • Disconnect sensor, wait for power to cycle off (5 seconds)
    • Close App
    • Open app
    • Plug in sensor when prompted by app (Please connect Structure Sensor)

Firmware 1.0

Released: September 15, 2024

This is the first ever firmware release for Structure Sensor 3 and connects all the hardware to the software.