Soldering

No RC experience, never touched a RC transmitter but you are fan of electronic. You’ve come to the right place. Get you ready to make your first quadcopter.

I don’t like reading. Go to the video tutorial page. ->;

Step 0:
Decide the size of the quadcopter you are going to make. If you play outdoor, your quad must be resistant to the wind. So take at least the 8″ propellers with motors like GT2210, or 10″ propellers with X2212 motors will be recommanded. Both of these 2 sets can lift easily a pocket camera, a GoPro or a smartphone. You’ll have a 15-25 minutes flight time with a lipo battery of 2-3S and 2000-3300mAh.

Step 1:
Prepare tools and materials. You can find all the necessaries except the lipo battery and the RC transmitter in our web store. For example, brushless motors, frame, ESC, propeller, Arduino and sensors (ACC, GYRO, MAG, Baro, GPS). Let’s take 10″ quad for example.

Materials to buy :
Brushless X2212 (x4)
ESC 20A (x4)
A light and robust frame
Arduino Pro Mini 328P 5V/16MHz
Sensors (an IMU 6DOF with an ACC and a GYRO is good enough to have the auto stabilization/self balancing)
2 pairs of 10″ prop (2 pairs = 2 clockwise + 2 countercolockwise)
A 3S-2200mAh or 3000mAh lipo battery
At least a 4-channel RC transmitter, of course a 6 channel one with a digital screen will be a better choice (for exemple : Spektrum DX5, DX6, DX7 ou DX8,Turnigy 9X, Graupner MX-12 ou MX-16, etc.)

Tools :
Screwdriver, scissors, double sided tape, soldering iron, etc.
Your PC or Mac

Step 2:
Some details (optional)

Step 3:
Assemble motors and ESCs. Solder the battery cable onto the central board. Many people use connectors to link the motors to ESCs in the purpose that everything is easily removable. However, it doesn’t worth it having the motors removable because the quadcopter becomes too heavy with these 12 pairs of connectors for 4 motors (3 pairs of bullet for each). Soldering the cables together will be lighter, more reliable and much cheaper.

Don’t forget to choose a high-quality battery connector who can withstand a 50-80A current when the quadcopter flies! Most of the lipo batteries use the “Dean connector” and the “XT60 connector”. Turnigy Nano-tech is a good choice for multirotor aircrafts with a great capacity of discharge.

Step 4:
Solder Arduino and the IMU on the central board. You need to solder pin 3, 9, 10, 11 to the ESC/motors and pin 2, 4, 5, 6, 7 (8, 12) to the receiver of your radio. A 5-channel radio is perfect for an Arduino Pro Mini based MultiWii which contains throttle, roll, pitch, yaw and a 3-position switch. You get 2 more switches on a 8-channel radio.
The white arrow on the central card shows the direction of flight.

The IMU must be well bonded on the central board by double sided foam tape. The double sided foam tape isolates the motors’ vibration so that the sensors data reading will be improved. The orientation of the IMU is not so important. The axes of the sensors can be defined/corrected in the MultiWii configuration file (step 7). You should just connect the I2C port (5V,GND, SDA, SCL or 3.3V, GND, SDA, SCL) to the central board by very soft wires which introduce less vibration.

Step 5:
Connect the ESCs to the flight controller. ESCs provide 5V power to the flight controller. It’s exactly what the Arduino needs. Be careful with the motors connection order. See the map below.

Step 6:
Connect the RC receiver to the flight controller. You don’t need to connect all the pins but just all used signal pins, at least one + pin and one – pin.

Step 7:
Connect your quadcopter to PC/Mac. Download the MultiWii program and set the parameters.

See the page “MultiWii Setup”

diy multicopter, diy quadcopter, diy multiwii