FluxGrip: Quickstart Guide 2.0

Note

This guide assumes you’re running the latest version of the firmware, which includes Cyphal v1.1 support. If you bought your device after August 2026, you should be fine; if you bought it earlier, you will need to update. Please refer to this post for more detailed instructions.

The FluxGrip magnet can be controlled in a couple of different ways:

• Cyphal (all models)
• Dronecan (all models)
• Analog - Voltage-level (only FG40A)
• Analog - PWM (only FG40A)

Cyphal

Cyphal is the “main” interface and can be accessed in a couple of different ways.

Using Cyanide

By far the easiest way to control the magnet is using the browser-based tool called Cyanide. All you need is a CanFace adapter.

Setup

1. Connect: PC ↔ CanFace ↔ FluxGrip
2. Open cyanide.zubax.com
3. Click Connect SLCAN
4. A window will pop up asking to select a Serial port

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Select the “Zubax Babel” one and Connect.

Once connected you should see 3 topics show up: manage, command and feedback.

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Feedback

Next, let’s try to subscribe to the feedback topic, select FluxGrip for Device and Feedback for type, click Open Subscriber.

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The feedback log should look as follows:

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Command

To turn the magnet on/off, you will use the command topic.

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And then select a command from the dropdown menu and Publish.

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Note

Even though all USB ports are created equal, some are more equal than others and so power available might differ between different USB ports. In some cases the USB power will not suffice to turn the magnet on, which will then trigger a reboot and/or fault condition. If this happens, the easiest workaround is to use an externally powered USB hub, which will usually provide enough power.

Management

This topic works in a similar way as the previous one, but provides some additional managerial functionality:

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Some notes:

• INF: Useful for quickly determining which firmware version is running
• RBT: After configuring the magnet (see later), a reboot is required so that the changes are applied.
• FDR: Restores factory defaults, speaks for itself.
• UPD: For updating firmware, binaries for FluxGrip can be found here.

Config

And finally we have Configuration which allows the user to change some parameters, we can split them into 3 categories:

• CAN-related
  • bitrate
  • priority
• Cyphal-related
  • Namespace (default: empty)
  • Command topic (default: command)
  • Feedback topic (default: feedback)
• Advanced settings
  • DO NOT TOUCH. Highly likely you might damage your device if you do.
  • Unless specifically instructed by Zubax to change some of these parameters, don’t.