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Posted by NobatteryNopower | Jan 21, 2021 @ 10:19 AM | 4,439 Views
I have a Fatshark Trinity Headtracking module and connected it to my Radiomaster TX16s. Here's how:

As I wanted to use CH7 and CH8 for pan and tilt, those will be used as example in this mini tutorial.

To program your desired channels on the Trinity module:
Press the Trinity button when powering the module up and let go of the button directly after powering up. Then listen to the beeps to get to the preferred mode, confirm mode by pressing button, listen to beeps for correct setting, confirm setting by pressing button. See attachment.

On the Radiomaster:
Go to the input page and select the channels you're going to use for pan & tilt. As an input source, iv'e selected TR7 for pan, TR8 for tilt. (TR stands for TRainer port) See attachments.

On your receiver, connect the pan-servo to CH7 and the tilt-servo to CH8.

Connect the Trinity cable to the Radiomaster (3.5mm audio jack on top)
Power cycle all parts.

Press the button on the Trinity module, after one beep the tracker works. Thats all!
Posted by NobatteryNopower | Jan 04, 2021 @ 05:12 AM | 4,070 Views
Before I hack my old DX8 into a PC steering wheel & pedals, I made an in-between solution to see how that would work. So I placed a switch between the rudder potentiometer and an extra potentiometer on the side. With a metal flange that turned out to be almost perfect, I placed a 1/10 wheel on the side, onto the shaft of the potentiometer.

Reversing rudder goes as normal. Only thing is the wheel steers the opposite from the stick. I've tried switching wires but that didn't do much. Oh well, no biggie.

Rudder Steering Wheel Ground FPV (0 min 19 sec)

Posted by NobatteryNopower | Jan 02, 2021 @ 02:49 AM | 6,375 Views
Welp, I already hit my goal for 2021 on New Years day. Previously I hit 99kmph a few weeks ago and wasn't satisfied with that 1 km below the magical number 100. So I took my 5inch quad, mounted a GPS puck to it and tried to go beyond 100kmph on 31-12-2020. Unfortunately I mounted the gps in a way its upwards view was obstructed, thus never saw any satellites.

So I made risers constructed of two control horns to raise the gps a bit for an unobstructed view of the sky. And it worked. I hit 109Kmph

This quad is flown with this FC.
Motors = Emax RS2205 - 2300Kv
Battery = Turnigy Nanotech 1600Mah
Frame is Geprc Elegant clone KHX5
Vtx = Flash VTX5848
GPS = uBLOXNEO-M8N, compass not used

For the post-flight info: I still have to figure out why it says Total flying distance = 0, Total flight time = 0:00hr.
Posted by NobatteryNopower | Dec 26, 2020 @ 06:43 AM | 11,157 Views
Having recently completely reset my Radiomaster TX16s, I'm adding back one by one all the models I use. As a memo to myself, these are the settings that are used when binding an older version of the Mobula6 - DSMX version to a Radiomaster TX16s:

For the Mobula6/DSMX:
In Betaflight:
Ports tab: Uart3 - serialRX
save & reboot
Configuration tab:
Serial based Receiver
save & reboot
CLI tab:
set spektrum_sat_bind = 9
set spektrum_sat_bind_autoreset = OFF
-unplug USB-
-Plug in USB-

In the Radiomaster TX16s radio:
Make sure external module is turned off
Internal RF:
Module Status: V1.3.1.92 AETR
Channel Range: CH1 - CH7
Receiver: 01 |BIND| - |RANGE|
Enable max. throw [?*]
Servo update rate: 22ms
Scroll a bit up and hit Bind. The 'headlights' of the Mobula6 should turn off/on to let you know binding was successful.

Connect to Betaflight
CLI tab:
set spektrum_sat_bind = 0
set spektrum_sat_bind_autoreset = ON

*Also, i needed to extend all ranges in the Output-page of the radio to +/- 125 to get close to 1000-1500-2000 in Betaflight. But now that I mention that, I see that there's an option called Enable max. throw in the Model-page of the radio that I should check out to see the effect of that.
Posted by NobatteryNopower | Dec 13, 2020 @ 09:06 AM | 8,403 Views
*Update 23-12-2020*
I mistakenly bought this AIO FC+ ESC combo:

Unfortunately the mistake I made was not reading properly. This AIO has a total of 35A, not 35A per ESC. Bummer. That might be too little. *edit 1-1-2021* Flies fine! Max amp not higher than 22A at a speed of 109Kmph

So i ordered this one instead: .. A few amps more to be sure. And now we play the waiting game...again.

After adding a GPS to my 7 inch quad, I suddenly became a tiny bit obsessed with speed. Because 99kph with the previous setup is not cool. It should be 100 or more. That's what my brain is telling me.

So i temporarily removed the SJCam5000x and added some fancy front cover I had laying around. A Nanotech 4S/1500 all the way up front should balance it out and hopefully provides enough power for a few speed runs. I won't rest this quest before I went over a 100kph*. Now, I'll have to wait for decent weather.

* With the gear I have. I'm not going to buy 6S batteries or a whole new frame or motors. I challenge myself to go over 100kph with the stuff I have and that's it.
Posted by NobatteryNopower | Nov 25, 2020 @ 10:58 AM | 4,784 Views
A big shout out to this person on Youtube:
Betaflight 4.2 tuning for long range (7+ inch) | 8inch | Iflight xl 10 | xing 2806.5 | blackbox (3 min 15 sec)
For providing settings that removed almost all jello in my SJcam5000x + 7inch frame video's. I'm still learning how to tune and having a jello-free return point of Pid-configurations in a back up when it goes wrong helps A LOT. THANK YOU.

SJCAM5000X set to 1080P / 60FPS / EIS OFF:
SJCAM5000X 1080P 60FPS (2 min 24 sec)
...Continue Reading
Posted by NobatteryNopower | Nov 21, 2020 @ 11:48 AM | 5,110 Views
I've been slowly working towards a maiden with the balsa Super Alula FV plane. I've build a drop-pod like camera structure to mount underneath the wing. On the other side of the fuselage I placed the VTX with the heat sink on the underside. The RHCP antenna is removable for transportation.

To do:
- Cover the bottom of the wings with Hobbyking clear covering.
- Remove some covering so glueing the fuselage to the wing won't be a problem.
- Remove some covering so glueing the camera pod to the underside of the wing won't be a problem
- Mount the flightcontroller
- Mount the TBS nano receiver + antenna
- Make balsa top fuselage covers
- Mount horns & clevises
- Maybe paint the fuselage and tail section white so moisture stays out of the balsa parts.
Posted by NobatteryNopower | Nov 09, 2020 @ 02:48 AM | 7,760 Views
I've bolted three ZMR250 bottom plates together with the arms of a long forgotten RCTimer Aliencopter Bee quad frame to end up with a 7" frame. 8" props would fit as well.

A short test flight indoors showed all systems operational.

Matek F722 + FCHUB Vtx
Racerstar SPROG X 35A BLHeli_s Dshot600 ESC's
Racerstar AirA 2508 KV1200
7 inch props. HQProp I believe
Runcam camera
SJcam 5000X - lets see if this can hold up well enough.
Aomway antenna for setting up Vtx, will be replaced for flight.

Did a test flight yesterday in Angle-mode ... because I left my goggles at home and boy do I suck flying LOS. I'll admit, I've lost my mojo.

The SJCam5000X shows promise though. Didn't see jello/vibrations in either 1080/60fps nor 4K*/24fps with either EIS** on or off.

** Electronic Image Stabilisation

*Edit* Last night thought it would be a good idea to update the firmware of the flightcontroller. I did remember that I've mounted the FC upside down due to wiring challenges so I flipped the roll-axis 180 in BF. However... I forgot you have to remap the motors as well. Woke up early today, saw that it was foggy & gorgeous outside and grabbed my gear.

So what should have been a cinematic flight over foggy fields with a rising sun, became a flip-fest of biblical proportions.

Motor Switch (0 min 39 sec)

A day later:

Charged everything the night before for a new chance at an epic video. A LOT less fog unfortunately, compared to yesterday but still eager to test this frame. Long story short, my FPV cam fogged up and had to do a semi-emergency landing.

The SJCAM5000X however... held up perfectly. Much better than I expected. My Telemetry / Rssi was all over the place. I don't have that much experience with Crossfire or telemetry yet. I'll have to dig in more.

This flight: 1080p/60fps:
SJCam5000Elite FPV test-1 (0 min 38 sec)

This flight: 1080p/60fps slowed down in postprocessing to 30fps:
SJCam5000Elite 60fps to 30fps Test-2 (1 min 16 sec)

Posted by NobatteryNopower | Oct 26, 2020 @ 02:03 AM | 6,742 Views
I never thought using superglue / CA for building a balsa plane would speed up the building process in an ungodly manner. This also applies for when you've sanded away too much and quickly have to add balsa strips to correct mistakes

I've added an extra 1.5mm carbon rod for more stiffness. Also, ... I'm hitting a wall here. The CG is becoming a problem as I guesstimated correctly While I kept 98% of the proportions according to plan, the motor up front and the added balsa in the fuselage for strength, tips the balance point heavily towards nose heavy when dry fitting a battery in the space originally planned. I have to do some free style scratch building to solve this without adding too much useless weight in the back. Or design an altered fuselage with a shorter nose. *Edit* OR trying to stuff most of the FPV gear in the back / on the tail
**Edit** Nope, i shortened the fuselage with a good two inches. It will work but space for gear is limited... Back to the drawing board. Either design a new, longer tail section or a complete new fuselage and change the looks completely.
Posted by NobatteryNopower | Oct 22, 2020 @ 04:01 AM | 4,271 Views
A follow up from this previous blog entry, I've started building the platform which will be my test bed for Inav. A Super Alula made of balsa.

Many years ago I found this blog online and decided that it was one of the most beautiful airplanes ever made imo.

So I decided to build my own. I found a plan that looks a bit like one here: (I'll attach the plan to this post). Enlarged it with the print-to-tile function of Adobe and ended up with 16 A3 sheets taped together.

I've started with strengthening the fuselage and cutting the ribs. How everything will balance out on the CG with all FPV-gear loaded is a complete mystery for now. Its a DLG converted to electric & FPV, so additional strengthening will be needed without adding too much weight.

Motor: 1150KV with a 9x5 prop
ESC: Afro 20A
Battery: to be tested. Somewhere between 4S/1500 3S/2200 or 3S/1300.
Main spar is a 8mm carbon tube 114.5cm / 45 inches long.
Posted by NobatteryNopower | Oct 16, 2020 @ 10:59 AM | 3,895 Views
First time flying for real instead of test runs in the back yard.
K-2SO Speeder | Star Wars (3 min 18 sec)

Posted by NobatteryNopower | Oct 07, 2020 @ 01:05 PM | 3,497 Views
After moving house and having to pack everything up & stow away for a while, I finally got time to connect everything and go for a test drive. I still have to tidy up all wiring but for now, all systems operational, including head tracking and the EzUhf repeater
Not visible but the 'ultra bright' headlights are candles in the dark. NO visibility whatsoever.
Vroooooom (3 min 30 sec)

Posted by NobatteryNopower | Sep 10, 2020 @ 01:17 AM | 3,898 Views
About the same time this thread appeared, i ordered this Wing FC-10 DOF Flightcontroller INAV OSD Accelerometer with internal barometer and compass from Aliexpress as a learning tool. A Beitan-220 will be my GPS.

This thread is about my findings & learning curve. It'll be updated when i make progress... or not.

When connected to a Windows-computer it identifies as a Furious F-35 Lightning flightcontroller.. Google that and you'll find a flight controller that doesn't look like the Wing FC-10 at all. But perhaps this info is of later use. Here's the Manual for the F-35:

- It only provides 5volts to the Rx when connected to a battery. I'll use a separate 5v supply for the servo's.
- Right now, I only have Ch1-Ch4 (AETR), but none after that. Not sure if CRSF or Inav setting/issue. *SOLVED* > I didn't specify the channels/switches correctly on my Radio when setting up a new Rx
- I want more travel of the control surfaces when the stabilization is OFF > *SOLVED*, increase FF in PID-tuning tab
- I'm not quite sure yet how to switch between Manual-mode and Angle/Horizon. It looks like Manual-mode is Acro-Mode with my config. > *SOLVED*, Manual is another Mode lower on the Mode-list. Now I have MAN-HOR-ANGLE on a 3-position switch.
- Check PASSTRU-mode. see list uploaded

A list with very useful tips from here:

First concept to understand is that iNav cannot...Continue Reading
Posted by NobatteryNopower | Sep 01, 2020 @ 01:39 AM | 6,960 Views
Memo to myself: IF you happen to have set the region to EU, the TBS Micro Crossfire TX locks itself to 25mw.

To undo this: Connect the USB-c cable to the module, click the button approx. 10 times. Disconnect usb, reconnect USB. Now, you can use TBS Agent to set the Region again.
Posted by NobatteryNopower | May 30, 2020 @ 07:35 AM | 7,214 Views
Working on a stand for my Star Wars K-2SO - speeder.

Wrapped the bottom of the speeder in cling film/Saran Wrap to prevent the putty from sticking. Then pressed exhaust repair putty against the bottom to get an impression of the bottom plate of the speeder, preventing it from sliding of when on display.

Next step: modeling a desert scene on the base. Some sand, perhaps a few rusty cogs, pipes, scrap metal etc.
Posted by NobatteryNopower | May 03, 2020 @ 02:01 PM | 8,422 Views
Love love love it!

Star Wars | K2SO (3 min 17 sec)

Posted by NobatteryNopower | Mar 31, 2020 @ 12:45 AM | 9,332 Views
The saying goes something like this: 'You don't know what you're missing until it's gone'. Rotorbits from Hobbyking. Drone-wise not the best. For construction purposes AWESOME. I bought a lot of Rotorbits stuff in some HK fire sale for like 10ct a piece and now truly benefitting from this money splurge I did a while back Perfect for strengthening the chassis & body. Only downside is it needs M2.5 bolts. Luckily I also had those but running out fast.

- Modified the Mobius to a poor man's DJI unit.

- Axial SCX10 II Builderkit arrived, quality is a bit of a let down. I expected more toughness and configuration options straight
out of the box. It feels limited and not worthy the title 'Builders Kit'. I've ordered some aluminium parts from AliX to strengthen it. I was also surprised it doesn't have options included to ajust riding height. Only body posts. Battery tray is not custom friendly. I ordered a flatter one which gives more mounting options.

- I am still waiting for the interior set. In the meanwhile, I'm closing up the bottom to keep as much dirt out as possible. Many iterations have passed and final result is still unknown... until i get the interior set and can figure out final layout.

- The pan-unit fits perfectly between the shock tower and rotorbits-brace. Unfortunately no tilt, there's no room left. This might change when the interior set is built and installed but I doubt it. The pan-unit needs to be far back to adjust for the narrower view the...Continue Reading
Posted by NobatteryNopower | Mar 22, 2020 @ 12:45 PM | 9,990 Views

Lots of stuff done, and encountered a small challenge on the way. The front window is distorting the view I already ordered 1mm plexiglass to conquer this horrible nightmare.

Body is almost completely painted. I am doubting if I should put on a semi-gloss clear coat for protecting the paint, or leave it as is and let nature do it's thing.
The hood didn't close properly. I chamfered the edges a bit and now it fits like a glove.
I've installed ultra bright led's for headlights, taken from a broken but high quality flashlight. This is going to be fun at night
Most windows are bolted to the frame, except the rear window. I think its a piece of lexan instead of perspex/acrylic. Very bendy and not too clear. To avoid glueing it in, as i might want to pop it out later for antennae or so, I took 1 mm styrene rod and made an internal frame. Now the window can be popped out the frame without too much trouble.

AND... I've managed to use a 7ch RX with PPM-out as input signal for my EzUhf No idea how I go from here. Maybe a long cable instead of this contraption works better in the end. But the idea of dropping the EzUhf on a roof, on a pole or hanging in a tree, to extend the range is an appealing idea. The Rx is 7ch, and my DX8 is, well 8ch. I have to test to see if the Rx is transmitting 7 or 8 PPM-channels. Edit***Well, maybe not:
Originally Posted by schumixmd
Ok. meanwhile have checked how the PPM out works.

...Continue Reading