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Updated 2026-10-27

SunFounder GalaxyRVR: A part is missing from the box

Researched by Riley Hart · based on SunFounder GalaxyRVR build guide and docs · we may earn a commission

Short answer

Rare, but it happens. Start with this: Check the spare bags first. Screws come with extras.

Why it happens

Rare, but it happens.

How to fix it

  1. Check the spare bags first. Screws come with extras.
  2. Email [email protected] with a photo of your parts. They send replacements.

Check the step it comes from

SunFounder GalaxyRVR step 2: Check nothing is missing
Step 2 of 49

Check nothing is missing

Check every bag, plate and board is there. Screws come with a few spares, so do not worry about a missing one.

Check: Every bag, plate and board is there.

Common mistake: Counting screws one by one. Bags have spares, so only check plates, boards and motors.

See this step in the full build guide

Still stuck?

Show the AI coach a photo

Open step 2 in the free build tool, tap Stuck and take a photo. The coach checks it against that exact step and tells you what to change. 3 free questions per kit.

Open step 2 →

Other GalaxyRVR problems

No camera picture in the appThe ESP32 CAM is in its adapter the wrong way, its ribbon is loose, or the camera is not getting power.The GalaxyRVR Wi-Fi does not show upThe rover is in upload mode, the battery is flat, or the camera board is not powered. The camera board makes the Wi-Fi.The app keeps disconnectingYour phone leaves the rover's Wi-Fi because it has no internet, or another network on the same channel interferes.The app sees the Wi-Fi but will not connectCustom code uploaded to the board replaced the rover's own program, or the camera board firmware is old.A wheel spins the wrong wayTwo motor plugs are swapped.One wheel does not turnIts plug is not fully in, or its wire got caught and snapped.

All 12 GalaxyRVR problems and fixes · The full build guide

SunFounder GalaxyRVR Mars Rover Kit$129.99 at SunFounder. Every part and tool in one box.
See it at SunFounder store

Sources

Drawings by robotsforthat. SunFounder GalaxyRVR is a trademark of SunFounder. We are not affiliated with SunFounder.