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FlexRC Mini Owl - Extreme FPV Proximity Racing Drone - DIY Build Instructions 

 

 

This guide will walk you through the detailed build steps using the 

FlexRC Mini Owl Extreme 

FPV Racing Drone DIY Kit

.  The kit contains everything you need to build your Mini Owl except 

the radio receiver, which is purchased as an add-on to the kit.  In our example, we’ll be using 
the Lemon Rx DSMX Satellite Receiver. The instructions also include the installation of an 
optional Pololu voltage regulator. 
 
The Mini Owl can be built as a pusher (motors “upside down”) or a standard (motors right side 
up) quadcopter.  We’re building ours as a standard quadcopter.  There is very little difference in 
the two builds other than motor directions and prop mounting. 
 

The Kit: 

FlexRC Mini Owl frame with hardware 

Omnibus Mini F3 Flight Controller with OSD 

Tiny 10A 4 in 1 – Cicada – BusyBee2 BLHELI_S ESC 

● 1pc of XT30 battery connector 

1104 6500kv motors 

2pcs of 

HQProp 1.9x3x3 Durable 3-Blade Propeller (2CW, 2CCW) 

Summary of Contents for Mini Owl

Page 1: ...eceiver The instructions also include the installation of an optional Pololu voltage regulator The Mini Owl can be built as a pusher motors upside down or a standard motors right side up quadcopter We...

Page 2: ...all four screws Leave the motor leads full length for now we ll trim them when we solder them to the ESC Next install the nylon screws by pushing them through the 20x20 holes from the bottom of the fr...

Page 3: ...1 ESC Be careful not to touch the nylon center screws with your soldering iron as they easily melt Finally locate the wiring harness that comes with the 4 in 1 ESC The wiring harness consist of six wi...

Page 4: ...wire to the appropriate pads on the ESC Note that the motor layout and ESC pad orientation aren t consistently named Specifically motor 3 will be soldered to pads A4 B4 and C4 Motor 4 will be soldered...

Page 5: ...B port and the directional arrow which indicates the front Turn the flight controller over and solder the power leads that you soldered to the battery leads in Step 3 to the B and B pads on the bottom...

Page 6: ...tors as follows Motor Position ESC Pads Servo wire color 1 Right rear A1 B1 C1 Green 2 Right front A2 B2 C2 Yellow 3 Left rear A4 B4 C4 Orange 4 Left front A3 B3 C3 Blue Route the servo wires under th...

Page 7: ...Identify the three pin holes on the Pololu When looking at the front the side with the components and with the pin holes on the bottom the pin holes are from left to right Vin GND and Vout Tin each pi...

Page 8: ...W Switchable FPV Transmitter We will be routing the video signal through the Omnibus Mini F3 flight controller to take advantage of its OSD capability Examine the back of the Diatone 600TVL camera and...

Page 9: ...ier Repeat for the black wire soldering it to the pad that you removed the black wire from earlier If you ve forgotten which pad on the camera is for which wire refer to the photograph When looking at...

Page 10: ...er and place it between the ESC and flight controller ensuring the diversity antennae are clear of the prop path Plug the connector into the Spektrum port on the flight controller If you are using a F...

Page 11: ...read them into the 3D printed bracket and tighten over the VTX This will secure the entire center stack and also facilitate easy removal of the top plate Install the flexible mini camera adjustable mo...

Page 12: ...tery strap into whichever slots you prefer to use to secure your battery Install the top frame plate onto the standoffs Go back and install all motor screws using blue Loc tite for security The Mini O...

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