Mission Brief
You're an astronaut-robotics engineer stationed on Mars Base 7. A massive dust storm has just passed, revealing delicate ice crystals on the red surface. These crystals may hold the key to:
- Evidence of past or present life
- Essential water resources for future habitats
- Fuel production and oxygen for return missions
But there's a problem: the crystals are too fragile to be picked up by normal grabbers. Your mission is to design a rover with a One‑Way Curtain to collect them safely and bring them home.
🎥 Watch the Mission Video
Check out the full mission walkthrough:
https://youtu.be/20_-gqwPFDc

Step 1: Build the One‑Way Curtain
Create a mechanism that lets ice shards pass into the collection basket—but won’t let them fall out.
- Use LEGO beams or Axel elements as flaps
- They should hang from a Pivot Point
- Attach a STOP bar to prevent the flaps from opening the wrong way.
- Mount it at the front of your rover
- Test: make sure objects slide in—but not back out

Step 2: Build Your Rover
Start with a simple SPIKE Prime drive base:
- 2-motor driving chassis (wheels or treads)
- One‑Way Curtain in front
- Collection area big enough for multiple shards
Add sensors, color tiles, or bumpers if you like!

Step 3: Program the Mission
Using SPIKE Prime’s coding interface:
- Drive forward to sweep crystals
- Turn and repeat to cover the area
- Return to the Home Base when done
Tip: Use loop blocks, timers, or sensor-based navigation to make it reliable.
Step 4: Create Ice Shards
Make your own LEGO “ice crystals”:
- Translucent 1×1 round tiles or slopes
- Light-blue or clear studs
- Vary shapes and sizes for more fun
Your Challenge
Build, attach, code, and collect:
MISSION GOALS
- Design a rover with a One‑Way Curtain
- Collect at least 5 ice shards
- Return to Home Base
Document your mission: take photos or videos!
🗣️ Share & Compete
Once your mission is complete, do this:
- Comment below the video with your rover’s design and strategy
- Like the video if you enjoyed the challenge
- Subscribe for more robotics missions
- Tag us on social media with your rover—your build might be featured!
