How to map a field with a DJI Mavic 3M using DJI Smart Farm

How I Map Fields with My DJI Mavic 3M and Use the Data on My Agras T100 (All in DJI SmartFarm)

Hey everyone, it's Cedro from Avary Drone. If you're running spray drones like the T100 (or T50), you know how powerful it is to bring in real multispectral data from a scout like the Mavic 3 Multispectral. Variable-rate application saves product, boosts results, and just makes the whole operation smarter.

I keep this workflow simple by staying inside the DJI ecosystem using DJI SmartFarm (web + the app on the T100 controller). No extra software needed. Here's exactly how I do it:

1. Fly the Mapping Mission with the Mavic 3M

Grab your Mavic 3M and the DJI Pilot 2 app. I set up a 2D Mapping mission with solid overlap (70-80%) and fly around 30-50 meters AGL depending on the crop and resolution I want. Make sure you get good, consistent lighting — it makes a big difference in the data quality.

The drone captures RGB plus all the multispectral bands at the same time. Images go straight to the SD card. If you have 4G on it, even better for later uploads.

2. Upload and Process Everything in DJI SmartFarm Web

Once I'm back at the shop or office:

• Head to DJI SmartFarm Web (log in with the same DJI account you use on the T100).
• Upload the photos from the Mavic 3M SD card into your Media Library (create a new album if you want to stay organized).
• Go to HD Maps > + New, select those photos, and kick off the cloud reconstruction. This builds your orthomosaic and vegetation indices like NDVI.

After reconstruction finishes:

• Open the map task and click Plan Field to draw or adjust your field boundaries.
• Then select the field and go to Generate Prescription (under Variable Rate). Set your rates per zone based on the crop health data. It's pretty straightforward once you do it a couple times.

This gives you a clean, DJI-native prescription map ready for the T100.

3. Share It Over to Your T100 Controller

This part is key — the maps don't always auto-sync, so:

• In SmartFarm Web, share the field and prescription to your own account.
• On the T100 remote controller, open the DJI Agriculture / SmartFarm app.
• Go to the Field or Task area, hit Cloud (or the shared maps section), and download what you just shared.

Boom — boundaries and prescription are now on the controller.

4. Load It Up and Spray

Load the field/prescription on the T100, dial in your spray height, rate, droplet size, etc., and fly it in Route or Prescription mode. The T100 handles the variable-rate stuff automatically. Super clean.

A few real-world notes from the field:

• Keep your firmware and apps updated on both drones and the controller.
• Reconstruction time depends on field size and your internet — I usually start it and go do other things.
• Even if you don't need full variable-rate, you can just pull in the boundaries and save a ton of time outlining fields manually.
• Always do a quick visual check for power lines, trees, or other obstacles before you spray.

This workflow has saved me a ton of headaches and product on real jobs. If you're just getting into spray drones or scaling up your operation, mapping with the Mavic 3M and feeding it straight into the T100 is one of the best upgrades you can make.

Got questions or hitting a snag at any step (upload errors, sharing issues, etc.)? Drop a comment below or reach out — happy to help troubleshoot.

Safe flying and tight patterns out there!

— Cedro Toro, Avary Drone

DJI Smart Farm Web

DJI SmartFarm Web User Guide