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Two FLIP Quadcopters Build

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Hoverthings FLIP Sport and FPV Pro Quadcopters

Why these two frames?

Hoverthings FLIP Sport Build

2FlipsBuild/FlipFront
Why a FLIP Sport?
2FlipsBuild/FlipLeg1
What to Get

Assembling the Frame
  1. There are two different construction methods depending on whether you are using a Pixhawk or a PX4.
  2. For the Pixhawk you will use the second untabbed center plate on top as shown above, for a PX4 you will not.
  3. Construction procedure is as follows (Use blue Locktite on all machine screws.)
  4. Assemble the 2 tabbed center sections with four 7/8" standoffs on the 2 holes an inch apart 2" in from the end on 2 opposing sides.
  5. Mount the arms to the top of one of the tabbed center frames using the short standoffs above the arm and use locktite.
  6. Insert and your four in one ESC in between the arms with the excess Motor wire wrapped around the ESC
  7. Put an untabbed frame plate on top of your frame and secure with 12 screws to the top of the standoffs.
  8. Install your DJI motors onto the frame arms with the supplied screws (use Locktite) with the motor wires facing the copter.
  9. Thread the motor wires through the top frame arm opening and connect to the ESC wires (tuck excess lead into frame).
2FlipsBuild/FlipSportMotProp
Installing a Pixhawk Flight Controller
  1. Of course Autopilots other than the 3DR Pixhawk or PX4 may be used, but these instructions can still serve as a guide.
  2. If you are using a Pixhawk, mount the 4 remaining 7/8" long standoffs, directly over the ones securing the bottom frame plates.
  3. Place a 1" square of the Double-sided foam tape that came with the Pixhawk on the bottom of it at each corner.
  4. Adhere the Pixhawk to the top of the frame with the arrow pointing to the front (between the 2 orange arms on mine).
  5. Drill a hole through the top 2 frame plates near a frame arm near the edge on one side to accommodate the "safety" button.
  6. Also mount the buzzer on the top frame member on one side where it will not interfere with a receiver installation.
  7. Connect the 3DR power module to the Pixhawk connector and attach the power module out of the way also.
  8. Solder the other end of the power module wires into a battery connector along with the ESC battery leads.
  9. Install the ESC's signal leads into the Pixhawk (Main Out) servo connectors (signal wire on top).
  10. Install the GPS and magnetometer wires into the GPS/Compass module and the Pixhawk.
  11. Mount your receiver with double sided tape or Velcro on the top frame member to one side of (and not touching) the Pixhawk.
  12. Mount the top untabbed frame member over the Pixhawk to the 7/8" standoffs you already installed above.
  13. Mount the GPS module to the top center of the top frame plate using double sided tape.

Installing a Px4 FMU / PX4IO Flight Controller
  1. For a PX4 you don't use the 2nd top FLIP frame plate but can construct a little hard top if desired.
  2. Cut a 2" by 2" rectangle from scrap plastic or fiberglass to support the PX4.
  3. Drill 4 holes in the rectangle that line up with the mounting hole in the PX4 board (roughly centered)
  4. using 4 of the supplied black screws, mount 4 standoffs to the rectangle.
  5. Insert the PX4FMU board (connector side up) over the 4 standoff studs and (carefully) screw 4 more standoffs over them.
  6. Carefully fasten 4 nuts over the exposed studs securing the PX4 modules to the rectangle you made.
  7. Place the PX4IO board over the PX4FMU board so that the connector is aligned and push down over the studs.
  8. Place a 3/4" square piece of the Kyosho zeal at each edge of the "rectangle" between the standoff screws.
  9. 2FlipsBuild/FlipZealGel
  10. Adhere the rectangle to the center of the top of the frame with the servo connector facing to the rear (between the black frame arms).
  11. Drill a hole through the top 2 frame plates near a frame arm near the edge on one side to accommodate the "safety" button.
  12. Also mount the buzzer on the top frame member behind the PX4 stack such that it does not touch the "rectangle".
  13. Insert the power connector into the PX4IO board and solder the power leads and the ESC power leads to a battery connector.
  14. Connect the buzzer and "Safety" button leads to the PX4 boards.
  15. Install the ESC's signal leads into the PX4IO board servo connectors (signal wire on top).
  16. Mount your receiver with double sided tape or Velcro on the top frame member to one side of (and not touching) the "rectangle".
  17. To use the remaining frame plate as a top cover screw the 4 standoffs to the top of the frame using existing holes near the edge.
  18. You can make your own top cover from a rectangle of plastic or fiberglass (I used Plexiglass, transparent is useful).
  19. Adhere the GPS/Compass module to the center of the top of the top cover (it doesn't matter which way it is facing).
2FlipsBuild/FlipPX4
Final Assembly
  1. Mount the battery between the lower frame sections and secure it with a Velcro strap inserted through the bottom frame plate slots.
  2. Route and secure the wires and cables with Zip Ties as shown to prevent snagging on the propellers or anything else.
  3. Ensure that the battery cable is secure but accessible to be plugged in when needed.
2FlipsBuild/FlipPX41
Setup and Additions
  1. Your FLIP can now be configured as described in the DIYDrones wiki for Pixhawk (recommended) or PX4.
  2. For a PX4 set board and compass orientation parameters to "Roll 180" because it is installed upside down for connector access.
  3. There is space for a 3DR telemetry radio and / or an OSD and FPV transmitter between the 2 side tabs.
  4. The Sport has adequate power to support a GoPro camera with a brushless gimbal and the necessary extended landing gear.
  5. I have had several crashes and only managed to break 2 props while trying (unsuccessfully) to cut down a 80' bull pine tree with it.
  6. This little copter is very high performance, fully acrobatic, surprisingly efficient and nearly indestructible and it is a blast to fly.

Hoverthings FLIP FPV Pro Build

2FlipsBuild/Flip003
Why a FLIP FPV Pro?
2FlipsBuild/Flip001
What to Get

Assembling the Copter
  1. Assemble the Frame components as shown following the same methods as described for the FLIP Sport above.
  2. The illustrations included here for the FPV Pro can be used for assembly and wiring layout.
  3. 2FlipsBuild/Flip006
  4. The above image illustrates the method for suspending the Pixhawk flight controller between 4 standoffs using O-rings.
  5. You can also see the extra heavy duty velcro used to retain the receiver in the above image.

  6. 2FlipsBuild/Flip005 2FlipsBuild/Flip008
  7. The installation of the 4 in 1 ESC and wire routing with split loom and zip ties and a close up of one of the rubber subframe mounts.

  8. 2FlipsBuild/Flip007
  9. The above image illustrates the installation of the brushless Gimbal and GoPro on to the suspended subframe.
  10. Note it was necessary to cut the end off of the top plate of the subframe to clear the gimbal mount.
  11. The auto stabilizing and leveling features of the brushless gimbal provide rock solid video and photographic capability.
  12. Camera pitch is also hooked to a receiver channel to allow the operator to directly adjust the down angle at the transmitter.
  13. The dead cat layout of the copter (with the motors set wider apart in front) keeps the propellers out of the cameras field of view.

  14. 2FlipsBuild/Flip004
    Setup and Additions
    1. Your FLIP FPV Pro can now be configured as described in the DIYDrones wiki for Pixhawk.
    2. Please note the roll and pitch rate PIDS need to be unlocked and a higher rate P Value is required for pitch than for roll.
      • A Dead Cat has less prop/motor spacing on the sides than on the front or back to clear the camera.
      • It also normally has the primary mass distributed from front to back and narrow from side to side.
      • This results in more force being required to cause the copter to pitch than is required to cause it to roll.
    3. There is space for a 3DR telemetry radio and / or an OSD and FPV transmitter on the subframe.
      • An FPV camera can be mounted with the GoPro on the gimbal or on the top of the subframe.
      • If you use FPV keep it's transmitter and antenna well away from the GPS.
    4. This little copter is very high performance, fully acrobatic, nearly indestructible, takes great pictures and it is a blast to fly.

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