Radar altimeter (Ainstein US-D1) mount for DJI M300/M350 RTK drone
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A 3D-printed plastic mount that fixes the Ainstein US-D1 radar altimeter to a DJI M300 RTK or M350 RTK drone for SkyHub True Terrain Following. HobiTech supplies it in India as an authorised SPH Engineering partner.
Technical
| Material | 3D-printed plastic |
| For altimeter | Ainstein US-D1 radar altimeter |
| For drone | DJI M300 RTK, DJI M350 RTK |
| US-D1 range (SkyHub user manual) | 0.5–50 m |
What is the US-D1 mount used for?
True Terrain Following (TTF) keeps a drone at a steady height above the ground or water, using live readings from an altimeter on the drone. SPH Engineering states SkyHub TTF works as low as 0.5 m above ground. It matters for low-flying survey sensors such as ground penetrating radar and magnetometers, where the distance between sensor and surface must stay constant.
The Ainstein US-D1 is a 24 GHz radar altimeter supported by SkyHub. The SkyHub user manual gives a 0.5 m minimum and 50 m maximum altitude, and notes it reports 0.5 m even when the surface is closer. HobiTech's US-D1 listing gives a 100 Hz update rate, a 43° × 30° field of view, IP67 protection, and 110 g weight. This mount holds the US-D1 on the airframe of a DJI M300 RTK or M350 RTK.
HobiTech's US-D1 kit already includes plastic mountings for the DJI M350/M300 RTK. Buy this mount separately when you need a spare, a replacement, or a mount for a second drone.
Which altimeter mount do I need?
| Your altimeter | Type | Max range (SkyHub user manual) | Mount to order | Mount build |
|---|---|---|---|---|
| Nanoradar NRA24 | 24 GHz radar | 50 m | NRA24 mount for M300/M350 RTK | 3D-printed plastic |
| Ainstein US-D1 | 24 GHz radar | 50 m (0.5 m minimum) | US-D1 mount for M300/M350 RTK | 3D-printed plastic |
| LightWare SF30/D | Laser | 200 m | Laser altimeter mount for M300/M350 RTK | 3D-printed plastic |
All three mounts are made for the DJI M300 RTK and M350 RTK. Each one fits only the altimeter named on it, so match the mount to the altimeter you fly.
What else do you need for True Terrain Following?
- SkyHub on-board computer: SPH Engineering ships it with mountings and cables for the DJI M300/M350 RTK by default.
- SkyHub True Terrain Following package: the software that holds height from live altimeter readings.
- An altimeter: the Ainstein US-D1 radar, the Nanoradar NRA24 radar or the LightWare SF30/D laser. The SkyHub user manual lists all three with a UART interface, powered from SkyHub.
- A mount for that altimeter, such as this one.
- UgCS: the SkyHub user manual asks for UgCS 5.3.0 or higher, for example UgCS EXPERT.
A protective box for SkyHub and the TTF kit is available for transport. See the full range in Integrated Systems.
Read more on SPH Engineering's official SkyHub page and in the SkyHub user manual.
Why buy the US-D1 mount from HobiTech?
HobiTech is an authorised SPH Engineering partner based in Bengaluru, India. Every order comes with a GST invoice, and our local team supports the sensor, the drone and the software together. SPH training is available too, including the UgCS Area Scan and True Terrain Following course.
Frequently Asked Questions
What does the US-D1 mount hold?
It fixes the Ainstein US-D1 radar altimeter to a DJI M300 RTK or M350 RTK drone.
Is a mount already included with the US-D1 kit?
Yes. The US-D1 kit includes plastic mountings for the DJI M350/M300 RTK. This mount is sold separately for spares or extra drones.
How low can the drone fly with the US-D1?
The SkyHub user manual lists a 0.5 m minimum altitude for the US-D1. SPH states SkyHub TTF works as low as 0.5 m.
Can I use a 24 GHz radar altimeter in India?
SPH Engineering states it is the customer's responsibility to check whether a 24 GHz altimeter may be used in their country. Check before you fly.
Will this mount fit the NRA24 or SF30/D?
No. Each altimeter has its own mount. See the table above.
How do I buy the US-D1 radar altimeter mount for DJI M300/M350 RTK in India?
Use Request a quote on this page, or call HobiTech on +91 70225 26509. We confirm the price and configuration, and every order comes with a GST invoice.