Gremsy Vio

Gremsy VIO integration is still in beta. The following are known issues:

• When running AMC on Tab 3 tablets with the VIO, the video feed can be choppy with default settings. It is recommended to set the RTSP Buffer Size (ms) = 350 to smooth out the video playback. Tab 5 tablets do not appear to have this issue

  • Tab 5 tablets have a green button on the side, Tab 3 tablets have a red button on the side

  • RSTP Buffer size can be set while in Advanced Mode under Camera > Settings

• Photo counter doesn't increment, but photos are triggered

• LAT/LONG information is not passed to the VIO and is displayed as 0s.

• Object tracking feature requires installing an additional app from Gremsy

The Gremsy VIO with the Smart Dovetail adaptor is compatible with the Pixhawk Payload Bus standard and can be integrated to work on Astro.

Gremsy VIO Configuration

Please refer to the Gremsy VIO wiki on how to configure the following settings:

• Set the static IP

  • VIO Address = 192.168.144.232

  • Netmask = 255.255.255.0

  • Gateway = 192.168.144.20

• Update the VIO firmware

Vio_sw_package.zipGoogle Docs

3/12/2025 VIO Software

The following versions are compatible with Astro:

• Vio Payload App v2.0.0.12

• Video Streaming App v2.0.3

• Vio Setting App v2.0.6

• Gimbal Firmware v7.8.3

Astro Configuration

Astro and AMC need to updated to the latest version, at least Astro FW 1.9 and AMC 1.33. More precise gimbal control can be achieved with Astro FW 2.0 and Slow mode

The following parameters need to be configured for Astro to communicate with the VIO. Click here to learn to set parameters on Astro.

• SER_EXT2_BAUD = 115200

• MNT_RATE_YAW = 0

  • You will need to check 'force save'

• Reboot Astro

If switching back to other Smart Dovetail payloads like the LR1 Payload or Sentera 6X, perform a parameter reset on Astro.

Connect to Astro

Plug VIO into the Smart Dovetail on Astro and boot up the aircraft. VIO should stabilize after about 15s and the light on the front of the gimbal will turn purple if connected to Astro.

Wait another 30-60s for the VIO video feed to appear in AMC

Camera Settings

Once connected to the VIO through AMC, the following settings need to be applied in the VIO camera settings menu:

• RC mode = Standard

• Setting target = Gimbal Device

  • Then set Gimbal Mode = FOLLOW

VIO Webpage Settings

On Pilot Pro, open a web browser like Chrome, and go to 192.168.144.232:8000. This will load a webpage hosted by the VIO payload. Under the Systems menu, set the following settings and hit apply:

• Video Streaming

  • Auto connect = Enable

  • Bitrate = 2 Mbps

  • Port = 8554

  • Resolution = 1280x720

  • Codec: H.264

• Gimbal Control

  • Auto speed = DISABLE

• Mavlink

  • Camera Component ID = Camera 1 (100)

Then reboot Astro and the VIO.