UAV Mapper Electronics and Pixhawk Installation Guide

Overview

Do each of the steps below in sequence to install your motor, servos, ESC, and Pixhawk.

  1. Electronics Required when DIY building a UAV Mapper airframe
  2. Pixhawk pin out and accessory locations
  3. Install the motor
  4. Install the servos
  5. Configure the Electronic Speed Control (ESC)
  6. Install GPS/Compass(s)
  7. Install airspeed pitot tube and sensor
  8. Install the Pixhawk and connect devices

Electronics - not included in kit

Pixhawk pin out and accessory locations

The UAV Mapper parameter file configured for the following accessories and positions:

Install the motor

There are two Turnigy 3542-1000KV motors - V1 and V2. Both perform the same. V1 motor shafts exit the rear of the motor and must be trimmed. Both versions are shown below.

  1. Trim shaft using a Dremel with a cut off wheel,
  2. Install X mount.
  3. Install the prop adapter using 3 screws.
  1. Install the X mount and prop adapter.
  2. Slide on the prop adapter.
  3. Feed the three motor wires through the opening in the bottom of the motor mount. Mount the motor to the motor mount with the four 3mm x 8mm screws.

Danger: Do not install the propeller until all configuration is complete.

Configure the Electronic Speed Control (ESC)

You must add power connectors and reprogram the Turnigy Plush 40 ESC.

  1. Solder a male HXT60 connector and female 3.5 mm bullet connectors on to the ESC.
  2. In this order - Connect your Plush 40 ESC to a Turnigy ESC programming card, then connect your battery to your power module as shown.
  3. Use the Arrow buttons to set:
    • Brake to ON so your propeller is less likely to strike the ground during landings.
    • Battery Type to NI-xx so the ESC does not automatically shut off power to the motor if the battery voltage drops below ~ 10 volts. This is designed to save your Lipo battery from over discharging damage, but is undesirable when the Pixhawk can monitor voltage.
  4. Press the OK button to save changes.
  5. Set on ESC Velcro in body as shown.
  6. Connect the three motor and ESC wires in any order.
    Note: Do not install propeller.

Install pitot mount

  1. Align notch on wood pitot mount with corplast compass mount on left wing as shown.
  2. Glue with hot glue.

Install Pixhawk, airspeed sensor, and I2C splitter

  1. Stick the loop Velcro to the back of your Pixhawk, airspeed sensor, and I2C splitter.
  2. Connect the I2C splitter to the I2C port on your Pixhawk.
  3. Connect the airspeed sensor to the I2C splitter.
  4. Install the following servo extensions:
    • MAIN OUT 1 - 30CM extension. To the right wing.
    • MAIN OUT 2 - 15CM extension To left wing.
    • AUX OUT 1 - 15CM extension To parachute.
  5. Install the Arming button in the body.
  6. Slide the Pixhawk board into the body.
  7. Connect the ESC servo connector to MAIN OUT 3.
  8. Connect the airspeed tubing to the airspeed sensor.

Connect the RC Receiver, GPS, and Power Module

  1. Set your GPS/Compass on the left wing. Plug the DF 13 6 pin into the GPS port on your Pixhawk.
  2. Plig in the DF13 4 pin connector into any spot on the I2C splitter.
  3. Connect Spektrum satellte receivers to the SPKT/DSM port on the top of the Pixhawk. Conect SBUS receivers to the RC in port on the back of the Pixhawk. Mount the reciever on the right wing as shown.
  4. Connect the yellow XT60 connector Power Module to the ESC. Connect the DF13 6 pin connector on the Power Module to the Power port on the top of the Pixhawk.

Install the telemetry radio

  1. Install the telemtry radio in the cut out on the left-front of the body. Connect the telemtry cable to TELEM 1 or TELEM 2.

Install the parachute

Install the Servos

  1. Use needle nose pliers to push the servo wire through the hole in the bottom cover.
  2. Install the pushrod in the middle outside hole on the servo arm. Widen the servo arm with 1/16" drill bit so the pushrod will fit.
    Note: You will center the servos later when you configure your Pixhawk and transmitter.

  3. Connect 15cm servo extensions and shrink tube (included).

  4. Note: Install shrink tube after you push the servo wire through the bottom cover.
  5. Tuck servo extension into groove on wing bottom and tack with hot glue. Do not use CA as it will be too permanent.
  6. Install the wings on the body
    • Connect the right wing servo to MAIN OUT 1.
    • Connect the left wing servo to MAIN OUT 2.

Continue to UAV Mapper Transmitter and Pixhawk Configuration Guide >>