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Two close calls and a crash.
Reception of the analog 5.8GHz FPV feed has been my main limitation. Vegetation and humidity seem to affect it greatly. I've tried to learn the areas where reception is good enough to fly and remain within those bounds but it's not always consistent and orientation of the drone plays a role as well. On two occasions this past month I lost reception completely.
In the first case I dived hoping that at a lower altitude reception would return. When a noisy image from the drone tumbling came back I switched to "angle" mode and recovered.
In the second the sun had yet to rise, the sky was clear and reception seemed excellent. I wandered a bit too far to a bad transmission area and lost the signal, dived and again switched to "angle" mode. I seemed to have recovered and thought I had put the drone back into "acro" but it was in "horizon" mode. I drifted to an area above trees and slightly behind myself again losing completely signal. I descended in "angle" mode and just as I was entering the trees I regained reception and pulled up. I was lucky to recover.
Unfortunately the last flight did not end that well. This time it was not the VTX reception. I was descending, no more than 40 feet up and maybe 40 feet almost directly infront of myself with virtually no obstructions when the 2.4GHz FrSky XM+ receiver on the drone lost reception and triggered an unexplainable "failsafe". Motors stopped and the drone dropped onto the asfalt infront of me. The camera lense popped off. There were multiple cracks in the frame and the LiPo was damaged. I was able to find and reattach the lense. The camera, VTX, receiver, flight controller and motors all seem to work. Parts to rebuild are on the way.
All working and ready to go.
Parts :
Frame Martian II 220
FC : Matek F405 OSD running Betaflight 3.3
ESC 20A 4-in1 blheli_s
Cam : Runcam split mini, 1080p 60fps dvr plus FPV output.
Motors Racerstar 2205 2300kv
VTX : eachine 5258 and realacc pagoda antenna LHCP
Excerpt of recording from dvr attached to goggles of short flight in stability (angle) mode of 75mm brushless "whoop" at daybreak.
A collection of sunrises from the end of July to mid August captured by the Caddx Turtle on an FPV whoop.
Now with the new DJI system the general public will become far more familiar with FPV. I can only imagine the far more spetacular dynamic footage to come. Even if I could afford it the DJI system is far too heavy and power hungry to be toted on the kind of small drone (less than 100 grams) I feel comfortable flying in the neighborhood.
75mm brushless "whoop" with carbon fiber and aluminium frame, weighing in with battery at 41.8g, flies well outdoors as well as indoors in acro as well as angle mode. Being small and very quiet it can fly discretely around the neighborhood at daybreak. In this picture all the default "on screen display" (OSD) elements are left on.
75mm brushless "whoop" with carbon fiber and aluminium frame, weighing in with battery at 41.8g, flies well outdoors as well as indoors in acro as well as angle mode. Being small and very quiet it can fly discretely around the neighborhood at daybreak. In this picture all the default "on screen display " (OSD) elements are left on.
www.szttfuav.com/diy-components/fpv-esc.html
Highly Integrated & Compact
High-quality Components
BLHeli-S Firmware Ready
DShot150/300/600 Ready
Silent operation
Product Description
Racing Drone ESC
An electronic speed control or rapid ESC is an electronic circuit that controls and regulates the speed of an electric motor. It may also provide reversing of the motor and dynamic braking. Miniature electronic speed controls are used in electrically powered radio-controlled models. Full-size electric vehicles also have systems to control the speed of their drive motors.
Highly Integrated & Compact
20A 4in1 BLHeli-S DShot600 not only includes 4 high-performance 20A fpv escs, but also a volt monitoring port which allows FC to monitor the voltage in real time (on condition that the FC supports this function).
With the incredibly small size, the installation and wiring can be very simple and easy when pairing it with the Flight Controller. Itโs an ESC specially designed for super mini-sized indoor FPV(s).
High-quality Components
The use of EMF8BB21F16G MCUs with the operating frequency of up to
48MHz, imported high quality MOSFETs, 3-in-1 drive ICs and ceramic
capacitors, 3-ounce copper, and 6 layers of PCBs guarantees less heat,
higher efficiency and rapider response.
BLHeli-S Firmware Ready
The ESC (with great performance and rich functions)
uses the original BLHeli-S firmware and supports adjusting
parameters or upgrading firmware via different methods
(i.e. via throttle signal wire with using other development board
or a FC flashed with the Cleanfight / Betaflight firmware).
DShot150/300/600 Ready
Besides the regular PWM mode, Oneshot125/Oneshot42/Multishot modes, the latest DShot150/300/600 modes are also supported. In DShot150/300/600 modes, the ESC has great anti-interference performance and rapid response.
Hardware Generated PWM & Damped Light Mode
The ESC firmware uses hardware generated motor PWM for smooth
throttle response and silent operation. Damped light does regenerative
breaking, causing very fast motor retardation, and it inherently also
does active freewheeling.
Specification
Item NameFPV ESC 20AFPV ESC 30AFPV ESC 40A
Input Voltage2-4S LiPo2-4S LiPo2-4S LiPo
BEC5V/3A 12V/1A5V/1A 12V/0.5A5V/1A 12V/0.5A
Size36*36*8 mm41.5*36*19.6 mm41.5*36*19.6 mm
TypeBLHeli_S FirmwareBLHeli_S FirmwareBLHeli_S Firmware
Weight20g20g20g
โ EFM8BB21F16G MCU, pipelined 8-bit C8051 core with 50 MHz maximum operating frequency.
โ Dedicated high frequency driver, makes the start more smooth. ESC maximum speed is limited to 500k eRPM.
โ Two layers tower structure between 4in1 ESC and FC using quick pin connection. Dual ways signal transmission makes the
flight more stable
โ Exposed pads for Battery and Motor wires, fast welding without additional disassembly, makes the installation faster and more convenient.
โ F3 flight controller, supports PPM, PWM and SBUS remote control / receiving mode.
โ FC integrated OSD, also integrated 5V/1A, 12V/500mA for VTX, camera, buzzer, LED and other peripheral devices ;
provided several silicone cables for connectors on FC, and will give you an unprecedented experience for installation;
โ Built-in current meter, OSD directly display the real-time current without any additional connection;
โ BLHeli-S firmware. It designed for superior performance in multirotor, and uses hardware generated motor PWM for smooth
throttle response and silent operation.
โ The code supports regular 1-2ms pulse width input, as well as Oneshot125 , Oneshot42 and Multishot .
โ Supports Dshot150, Dshot300 and Dshot600.Dshot is digital signal, anti-interference ability is stronger, and do not need throttle calibration.
This is the 'David windestรฅl style' tricopter I made during my first semester at University. It uses a NAZE32 flight controller, Hobbyking 30A ESCs along with DT750 motors. The latest version of Betaflight is run on the FC. The 2.6HV uses a 4 Cell 3000mAh lipo battery giving around 10 min flight time. No acrobatics with this! This bird likes hovering around in auto-level! I attempted some FPV flying but never got properly into it. The frame is made from standard 3mm acrylic and 12mm pine. Thanks to Eddie Handford for taking the picture!
A moon later and the whoop porting the Caddx Turtle FPV camera is flying again. Here is a screen capture from a lens corrected video looking out to the West over the low lying fog in the cemetery.
While putting together a new frame I also installed a RHCP antenna that I matched with RHCP pagoda and RHCP patch on the EV100 goggles. Reception seemed less noisy but more testing is needed to see if it was worth it.
Rebuilding the frame and mounting the components was straightforward but the VTX seemed to fail at any vibration eventually not broadcasting at all. Before shelling out more money and waiting for a replacement for an already "outdated" system with limited applications I tried the "toaster oven method" to re-flow the solder and it worked, at least for now.
www.youtube.com/@RoadTripFPV/featured
RC FPV (First Person View) quadcopter adventure flights of historic or geologically interesting locations across the western U.S.. The route I fly is meant to showcase the environment and I do not edit, colorize, or stabilize my videos outside the basic GoPro 8 settings and the addition of music.
-Updated 1/8/23-
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QAV-S 7" Frame (JohnnyFPV version for DJI air unit)
Brain3D GoPro soft mount
Deep Design Vertical Immortal T Mount
T-Motor F7 Stack FC - 45A 4-in-1 ESC - Betaflight TMOTORF7 4.2.9
HQProp 7x3.5 V1S
TMotor F90 1300kv
DJI Digital HD FPV Air
TrueRC Singularity (x2)
TBS Crossfire Nano Rx
UBLOX M8N GPS
6S3000 LiIon
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Taranis X9D
TBS Crossfire Tx
DJI Digital FPV glasses
4S3000 LiIon
FatStrap Digital HD FPV strap
TrueRC Singularity Stubby (x2) &
Lumenier AXII HD 2 Patch Visor 5.8GHz Antenna
GoPro 8 (2.7k 60fps)
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Torvol Quad PITSTOP Backpack (added 2x copter straps)
Pyrodrone Lipo Bag (Lunch Box Style)
Hard Carrying Case for DJI Digital FPV Goggles
Photos Aurora 90, quad inteฬrieur et parking. Upgrade 2s-4s, SmartAudio VTX, DYS 1104x6500 motors, YupiF4 mini with OSD, DYS2030x5,FrSky XSR-R,Led, Hakrc 20x20mm 15A Blheli_S BB2 2-4S Dshot 4 In 1 ESC,Taranis X9D+, Betaflight 3.2.1,EWRF 5.8G 48CH 0/25/100/200mW 700TVL FOV 120 Degree PAL/NTSC FPV Camera Thugframe 140 rebuild with Runcam Split 4S OSD Betaflight and SmartAudio, 228g
Traxxas Rustler 4x4 front end. Using Hot Racing bell crank. Also shows the Tekno M6 drive shaft and cup, and red center drive shaft spline, out of the front differential.
Can also see my broken Kakute flight controller, mounted on top, that serves as a LED controller. Works well and is very programmable (thanks Betaflight).
Photos Aurora 90, quad inteฬrieur et parking. Upgrade 2s-4s, SmartAudio VTX, DYS 1104x6500 motors, YupiF4 mini with OSD, DYS2030x5,FrSky XSR-R,Led, Hakrc 20x20mm 15A Blheli_S BB2 2-4S Dshot 4 In 1 ESC,Taranis X9D+, Betaflight 3.2.1,EWRF 5.8G 48CH 0/25/100/200mW 700TVL FOV 120 Degree PAL/NTSC FPV Camera
Post maiden - LOS and FPV.
Armattan Morphite X155 w/ fusion pod.
BetaFlight F3 control board (FC, PDB, OSD).
Brother Hobbies 1407 +3k-ish kv.
Emax bullet 30A ESC.
4s.
New Runcam swift mini.
good ole trusty Foxeer TM25 VTX.
Emax Pagoda V2 antenna.
some tiny Frsky receiver.
a nice fat cap.
Photos Aurora 90, quad inteฬrieur et parking. Upgrade 2s-4s, SmartAudio VTX, DYS 1104x6500 motors, YupiF4 mini with OSD, DYS2030x5,FrSky XSR-R,Led, Hakrc 20x20mm 15A Blheli_S BB2 2-4S Dshot 4 In 1 ESC,Taranis X9D+, Betaflight 3.2.1,EWRF 5.8G 48CH 0/25/100/200mW 700TVL FOV 120 Degree PAL/NTSC FPV Camera Thugframe 140 rebuild with Runcam Split 4S OSD Betaflight and SmartAudio, 228g