First glance at Armattan Rooster FPV quadcopter drone frame

After flying chinesium (XMR250, Reptile X4R 220, Martian II) and frames from DemonRC I've decided to switch to completely different brand. My choice is Armattan Rooster, the newest freestyle frame from Armattan.

Armattan Rooster FPV quadcopter drone frame

Armattan Rooster FPV quadcopter drone frame

Armattan Rooster FPV quadcopter drone frame

Armattan Rooster FPV quadcopter drone frame

Armattan Rooster FPV quadcopter drone frame

Armattan Rooster FPV quadcopter drone frame

Armattan Rooster FPV quadcopter drone frame

Armattan Rooster FPV quadcopter drone frame

Rooster arrived few days ago, and this is what I can say about it before putting all the stuff into it:

  • sunken nuts you have to install by yourself are a very idea. It's hard to do without tools and skills. It would be much much better is they were preinstalled. Armattan, please, fix it!
  • additional pair of standoffs between plates would not hurt
  • it is tight inside and I will have to be creative to fit X4R and TBS Unify Pro in the back of the frame
  • frame itself looks good tho. I might even say it is pretty

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Troubleshoothing INAV: magnetometer/compass is not working

Your magnetometer/compass is not working with INAV? Is the sensor red in Configurator? You are not the only one… Not only most popular compass HMC5883l is discontinued and what you get are Chinese clones, chip labeled 5883 might not be HMC5883l but something completely different. And I2C bus is very very picky and likes to give up on you….

This is how you might fix your problems: add pullup resistors for I2C SCL and SDA lines and/or lower i2c_speed

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Troubleshooting INAV: why INAV is not arming

Few weeks ago I've decided to shoot more tutorial videos about INAV and this is the first effect of that decission: INAV Troubleshooting: why INAV is not arming

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Worth to see: 250m inside of a chimney in a FPV drone

I'm posting this not without a very specific reason. A few days ago one of my friends accomplished something quite amazing: he "dived out" a 250m tall chimney of an abandoned factory. By "dive out" I mean: flew inside a chimney at its base, climbed 250m up inside the chimney and then flew out. Simple, right? Well, no 🙂 Just think of it like this: how to get a solid video link when TX is 250m away inside a structure made from reinforced, thick, concrete?

I'm waiting for a video of "dive in" for sure!

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How to wind an electric brushless outrunner motor with dLRK winding schema, part 2

My memory is not as good as it used to be. I just realized, that third part of my motor winding series was not yet announced over here. So here we go…

In this video I terminate motor into Delta pattern and do first test of freshly winded motor.

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Crossbow LRS: first live test that is almost a success

Finally, much later than I originally expected, Crossbow LRS, my DIY medium range RC radio link was used to control something that flies. Not much, and not far. It was only my experimental 6" GPS Racer quadcopter. And I reached only 350m. Small steps, I had no intention to beat and records after all.

Just as reminder, by RC link is as follows:

  • Based on LoRa32u4 II dev. boards
  • Semtech SX1276 868MHz
  • Programmed with Arduino
  • Planned range: up to 5km

Next test, this time without twitching, in a few weeks.

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Standalone Betaflight Configurator, since Chrome Web Store apps are dead

Google finally did what they announced last year: Chrome Packaged Apps for Windows, Mac, and Linux are dead. OK, maybe not 100% dead, but they were removed from search and browse in Chrome Web Store. If you still have link, you can install (no idea for how long tho).

So, how to live with that? Our hobby is driven by Chrome Packaged Apps. Betaflight Configurator, INAV Configurator and Cleanflight Configurator are all Chrome Packaged Apps. Did we lose the ability to set up our drones? Luckily no. Thanks to fantastic project NW.js, chrome apps can be packed together with Chromium and distributed as a single file without dependencies. I've prepared a short video how to install Standalone Betaflight Configurator, for INAV it's the same procedure. And for Cleanflight… well… Cleanflight is dead. Or rather dying…

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Arduino hygrometer with DHT11 and SSD1306 OLED display

One of the things I like about Arduino ecosystem is that you can prototype pretty decent device in very short time. It might not be pretty, but will work. Just like my DIY hygrometer built with DHT11 and SS1306 OLED display I've built few weeks ago:

Simple, efficient and runs on 4 AA batteries. The best part is that it can be powered all the time. Arduino does humidity measurement, display the result and then powers itself down to conserve power. Cool, right?

Arduino DHT11 hygrometer with OLED SSD1306 display

Code is available in GitHub repository.

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How to wind an electric brushless outrunner motor with dLRK winding schema

This time, another "motor winding" video. In 13 minutes and something seconds I:

  • show some tool that I find useful for motor winding
  • wind a 12N14P brushless outrunner electric motor with dLRK winding schema
  • terminate this motor into Delta configuration

BTW, in next video I will show you if it worked or not 🙂

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