CB302B battery monitoring and IMU setup: Hardware Extras.
Bring your CB302B online.

Enable battery monitoring and motion sensors on your CB302B running stock JetPack. The curve-extras package connects the BQ40Z50 battery gauge and the BMI270 / BMM150 9-axis IMU to your Linux system.

v0.2.0 · JetPack 6.2.2 · L4T 36.5

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01 - What it enables

Battery and sensor integration.

Battery icon with real state of charge in the GNOME taskbar
IMU and magnetometer exposed through the Linux IIO subsystem
No device tree or bootloader changes - OTA-safe
Survives reboots, with updated packages released for supported kernel changes
Includes curve-diag for hardware verification

02 - Install

One command on your Jetson.

Run this command in a terminal on the target system.

curl -sL https://curvereality.com/setup | sudo bash

Or download the package: curve-extras-0.2.0-aarch64.tar.gz

What gets installed

/usr/lib/curve-extras/: Kernel modules and firmware
/usr/bin/curve-diag: Hardware diagnostic tool
/etc/systemd/system/curve-extras.service: System service

03 - Verify

Check the hardware.

curve-diag

Reports IMU sensor readings and battery status. All sensors should show as active.

04 - Uninstall

Return to stock JetPack.

sudo /usr/lib/curve-extras/install.sh --uninstall

Removes the installed files and disables the systemd service. Reboot to return to stock JetPack.

Boot stack stays intact

curve-extras does not modify the boot stack, device tree (DTB), or extlinux.conf. The installation is reversible.

05 - Release notes

Changelog

v0.2.0

Fixed the UPower deadlock that caused a two-minute boot hang
Added driver rebind for the battery race condition
Updated modules for kernel 5.15.185-tegra (JetPack 6.2.2)
Improved the idempotent setup script with verification

v0.1.0

Initial release - IMU and battery monitoring on CB302B.

Engineering support

Need a hand with setup?

Curve Reality - Rev 2026.04

Designed in New Zealand