In the past week, I did an experiment on controlling 2 blimps using Blynk app.

The videos are shown as follows:

The short version:

The long version:

The settings for two blimps are as follows:

  • The Dolly fish has 4 small 12mm motors: 2 for horizontal control and 2 for vertical control
  • The clownfish has 3 big 20mm motors: 2 for horizontal control and 1 for vertical control

Some observations I got:

  • One big motor generates more force then 2 small motors
  • The turning ability of clownfish is obviously better than Dolly fish
  • The speed of Dolly fish is too slow

I assume that smaller motors could be implemented on smaller spherical balloon since the fish balloons have bigger interia.

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