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QL25 Setup

Setup guide for the QL25 drone kit from Dronesmith Technologies

This is the place to learn how to assemble your QL25 kit, perform setup in QGroundControl, and prepare for flight. Let's get started.

Fully assembled QL25 drone

Fully assembled QL25 drone

Included in the QL25 kit

Extra Parts

There may be extra fasteners in your kit. All the hardware needed is shown in the assembly steps.

Non-included Equipment Needed

  • WiFi Internet Connection
  • A Mac, Windows, or Linux computer on the same network as your WiFi.
  • Luci compatible RC Transmitter and Receiver. See Choosing a Radio Controller.
  • LiPo battery charger and its required accessories.
  • Charger for your RC Transmitter if it has a rechargeable battery.
  • 2 Micro-USB to USB-A cables. Recommended length 3ft or more.
  • 2 microSD cards
  • Diagonal pliers or some other cutting tool for zip ties.

Optional

  • Extra LiPo battery
  • Extra RC Transmitter batteries
  • Extra zip ties
  • Pen and paper

Assembly

Keys to Success

  • Read through each step thoroughly.
  • Keep the orientation of the aircraft in mind when performing each step.

Tools

Aircraft Orientation

Start by grabbing the Main Frame, the largest item in your kit. Refer to the image below and make a mental note of the Front, Rear, Left, and Right indicators.

Aircraft Orientation - Top View

Aircraft Orientation - Top View

Step 1

Assemble landing legs and fasten them to frame.

Fasten the M3 6mm Screws (Black) with the 2.5mm hex key. These are the largest black screws in the kit.

Step 1

Step 1

Step 2

Attach the 14mm and 12mm M/F Standoffs to frame.

Standoffs can be tightened by hand but be sure to tighten firmly.

Step 2

Step 2

Step 3

Flip over the frame and place the Power Distribution Assembly on the 12mm M/F Standoffs. The ESCs will be sandwiched between the Power Distribution Board and the frame.

Orientation

  • Keep PWM control lines to the RIGHT of the aircraft.
  • Power tail must point toward the REAR of the aircraft.
Step 3

Step 3

Step 4

Fasten down the Power Distribution Assembly.

Position the wires of the Power Distribution Assembly so that they will not be pinched.

Step 4

Step 4

Step 5

Fasten down the LED boards.

The LED Board Screws are the smallest black screws in the kit. Tighten with the 1.5mm hex key.

The screws will have some resistance as the holes are not threaded.

Step 5

Step 5

Step 6

Attach the 35mm Round Standoffs to Frame Base.

Step 6

Step 6

Step 7

Attach Luci to top of 14mm M/F Standoffs.

  • Arrow symbol on Luci should point to front of aircraft.
  • Fasten down with 20mm Standoffs.

Luci Orientation

The small arrow on the top surface of Luci must be point toward the front of the aircraft.

Step 7

Step 7

Step 8

Loop battery strap through Top Plate.

Keep fuzzy velcro side on outside.

Step 8

Step 8

Step 9

Insert Camera Plate and fasten down Top Plate.

Step 9

Step 9

Step 10

Mount motors.

Motor Pattern

The Motor Kit comes with 2 clockwise motors (black caps) and 2 counter-clockwise motors (red caps). The motors must be placed exactly as shown in diagram below.

Motor Pattern

Motor Pattern

Mounting Motors

  • Tighten motor screws with a 1.5mm hex key.
  • Mount to the cross shaped hole instead of the individual outside holes.
  • Make sure you can see all the holes before inserting any screws.
Step 10

Step 10

Use the shortest motor screws.

There are three screw sizes that come with the Motor Kit. Use the shortest screw size to avoid damaging motors.

Connect Motor and PWM lines

Each ESC (Electronic speed controller) on the Power Distribution Assembly has 3 motor lines and a 3 pin PWM control line.

Join motor lines

Join the three wires from each motor to the motor lines on the closest ESC. The position of the three wires does not matter in this step. Later we will test if the motors are spinning the correct direction.

Connect PWM control lines to Luci

PWM Line Order

Reference the diagram below for motor numbering pattern
Each PWM control line must connect its corresponding PWM OUTPUT pins on Luci.
Example: Motor 1 PWM control line to PWM OUTPUT 1

The orientation of the PWM lines is also critical. The brown wire of each connector must be closest to the surface of the Luci board. (Yellow up. Brown down.)

Motor Pattern

Motor Pattern

Connect RC Receiver

PPM-Sum or S.Bus RC

Connect to the RC INPUT pins on Luci. Be sure to match the S/+/- lines with the SIG/+/- lines on the receiver.

Spektrum DSMX Satellite reciever

Connect to DSMX connector on Luci.

Connect LiPo Battery

Now it is time to power up your drone so you can test the motor direction. Strap in your battery and connect it as shown in the images below.

Battery Safety

  • Strap the battery down firmly.
  • When disconnecting the battery do not pull on the wires. Pull from the connector itself.
  • Do not leave a powered drone unattended.
  • When you are done using the battery reattach the protective rubber cap to prevent accidental shorting.

Setup Luci

Follow the Luci Powered Drone tutorial to configure Luci, link Luci to a Dronesmith Cloud account, and create a wireless connection between Luci and ground control software on a PC. Return here to complete setup.

Setup in QGroundControl

Now that you are broadcasting MAVLink messages to you PC, follow the QGroundControl Setup guide to bind your transmitter, perform sensor and RC calibration, and test motor spin direction. Return here to complete setup.

Zip-tie Cables to Frame

Attach Propellers

Caution

Spinning propellers are dangerous.

Your QL25 Kit contains a carbon fiber propeller set and a plastic propeller set. We recommend using the plastic propellers unless you are an experienced pilot.

In a propeller set there are two clockwise propellers and two counter-clockwise propellers. Attach them according to the diagram below.

Identifying if a propeller is CW or CCW

Start by finding the top of the propeller. The top has a convex surface and the bottom has a concave surface.

On a clockwise propeller, the leading (raised) edges of the propeller should be moving forward in the direction of rotation when the propeller is spinning clockwise. Likewise, on a counter-clockwise propeller the leading edges should be moving forward in the direction of rotation when the propeller is spinning counter-clockwise.

The leading edge on a CCW propeller

The leading edge on a CCW propeller

To secure the propellers tighten the propeller caps down on the propellers. It is helpful to insert a small tool through the propeller cap when tightening.

What's Next?

Whoo! You have an assembled drone. Please read though this guide before you attempt to manually fly your QL25.

QL25 Setup

Setup guide for the QL25 drone kit from Dronesmith Technologies