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Posted by aero nishi | May 10, 2019 @ 04:20 AM | 693 Views
I installed two motors to make DW Hobby X-2 a thrust vector plane.
DW Hobby X-2 thrust vector mod (0 min 46 sec)

Posted by aero nishi | Sep 22, 2018 @ 11:27 AM | 5,224 Views
I put FPV camera and VTX on Mini Convergence VTOL.
I also installed betaflight FC as an OSD and GPS to see the ground speed, altitude, battery voltage flight mode etc.

E-flite Mini Convergence VTOL with OSD and GPS (1 min 1 sec)

Receiver output of MCV is connected to betaflight FC and MCV flight mode switch is assigned to acro/angle/horizon mode of betaflight.
I modified the OSD message of betaflight to show AIRPLANE MODE/TRANSITION/MULTIROTOR MODE instead of ACRO/STAB/HOR.
Futaba TX was used to fly the MCV.

FPV Camera : Torrent 110 FPV (SPMVCM01)
VTX : Torrent 110 FPV (SPMVTM150)
FC : F4 NOXE Flight Controller AIO OSD BEC w/ LC Filter Barometer for Betaflight (20x20mm)
GPS : UBlox GPS Module
DVR : RCX HMDVR-S DVR 4:3 640*480 NTSC Video Audio Mini FPV Recorder
LC Filter : L-C Power Micro Filter-3A(2-4S/Max 16V input)
Posted by aero nishi | Sep 18, 2018 @ 05:13 PM | 5,384 Views
I tried to control Mini Convergence VTOL with Futaba transmitter.

Control E-flite Mini Convergence VTOL with Futaba TX (0 min 16 sec)

MCV supports only Spektrum serial reciever(SPM4648), so I needed to simulate Spektrum serial.
Spektrum serial is 125000bps, 8bits, No parity and 1 stop bit. SPM4648 sends 16byte packet every 22ms.
The first picture is the actual output of SPM4648. Each line is 16 byte packet every 22ms.

00 a2 0c 00 2e aa 14 0c 1b ff 01 5e 21 56 31 56

00 fade count
a2 system id (DSMS Spektrum2048 22ms)
0c 00 Channel ID=1 (Aileron) Servo Position=1024
2e aa Channel ID=5 (AUX 1) Servo Position=1706
14 0c Channel ID=2 (Elevator) Servo Position=1036
1b ff Channel ID =3 (Rudder) Servo Position=1023
01 5e Channel ID=0 (Throttle) Servo Position=350
21 56 Channel ID=4 (Gear) Servo Position=342
31 56 Channel ID=6 (AUX 2) Servo Position=342

If we simulate these packets from SBUS data, we can fly MCV with Futaba TX.

The channel ID of Spektrum is numbered in the order of Throttle, Aileron, Elevator, Rudder, Gear,... ,but Futaba's ID is in the order of Aileron, Elevator, Throttle, Rudder, Gear,... We also need to convert them.

At first I thought about converting SBUS to Spektrum with Arduino or Mbed, but since I found "SBUS to PPM or Spektrum Serial Converter" (the second picture) on the internet, I decided to use it. It seems to be a clone board of sebseb7's really nice project.( (Don't ask him about the clone board).
I modified the firmware of the converter slightly to match the output of SPM4648.

The voltage of MCV's receiver connector is 3.3 V, so I took 5V from unused servo connector
of the MCV to power the converter and the SBUS receiver. The signal from the converter is
level-shifted and input to MCV. The third picture shows the connection of the converter, SBUS receiver and MCV.
I don't guarantee anything and am not sure you're interested in but I attached the modified firmware I used.
Posted by aero nishi | Mar 27, 2018 @ 05:08 AM | 6,103 Views
Motors: DYS 1306-2300KV x 2
FC: OMNIBUS F4 Nano v3 with LC filter (Betaflight)
RX:FM800 Pro 2.4G 8CH Receiver
Battery: Tattu 450mAh 14.8V 75C 4S1P (outdoor)
Tahmazo 360mAh 11.1V LP3S1P360RE (indoor)

RC Factory F-22 Raptor Twin Motor Modification (1 min 10 sec)

Posted by aero nishi | Feb 22, 2018 @ 08:35 AM | 7,073 Views
RC Factory Crack Wing Twin Modification
Motors: SunnySky R1106 8000KV Brushless Motor x 2
Props: 3x2" T-Type 3020 Multirotor Propeller x 2
ESCs: TURNIGY Plush 6A with BlHeli firmware x 2
RX:FM800 Pro 2.4G 8CH Receiver
FC: F4 Micro Flight Controller with iNav firmware
Battery: Dualsky 300mAh 30C 7.4V
RC Factory Crack Wing Twin Modification (1 min 8 sec)

Inverted hovering is still highly experimental but I'm trying with a little bit larger ESCs/ Battery and inverted setting:
Inverted Hovering Test - RC Factory Crack Wing Twin Mod. (0 min 22 sec)
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