Want a powerful DIY drone that outperforms any cheap toy drone from online stores — for just around 100 yuan (~$15 USD)? In this step-by-step tutorial, I’ll show you how to build your own quadcopter using ordinary school rulers as the frame! 📏✂️

The best part? The rulers come with built-in scales, so your drone will be perfectly symmetric — no more guesswork!

What you'll learn:

• How to mount 2212 brushless motors & 30A ESCs

• Simple wiring & soldering tips (no complicated order – just swap any two wires if the motor spins wrong!)

• Connecting a flight controller & receiver

• Binding your remote and setting up the FC (easy with the manual)

• Adding landing gear, tidying wires with foam board, and attaching the battery with Velcro

• Test flight & optional FPV addition

Parts needed (budget-friendly):

• 4x 2212 motors

• 4x 30A ESCs

• 1x flight controller board

• 1x receiver + remote

• 3S LiPo battery

• Rulers, wires, soldering iron, foam board, propellers

⚠️ Don’t be afraid of wiring! Every component comes with a manual, and there are plenty of online guides. Setting up the flight controller is easier than you think — just follow the steps.

✅ Test flight proven – stable and fun!

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💬 Let me know in the comments: would you add FPV to yours?