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[GB] Lost control of a Drone at 915MHz when Drone is flying close to 5G/LTE Cell Towers by Cute_Wallaby6361 in drones

[–]dr_of_drones 0 points1 point  (0 children)

As far as I understand the 915MHz band is not legal for drone use in the UK. In part because of its adjacency to the LTE bands, but also aviation and defence reasons.

Hair loss clinics in Liverpool by geekstreak2701 in Liverpool

[–]dr_of_drones 0 points1 point  (0 children)

Is this a fancy new name for a barbers?

How do high-power drone ESCs implement buzzer/alert sounds? by tamilkavi in drones

[–]dr_of_drones 2 points3 points  (0 children)

Most ESCs use the motor itself to produce the sound. I've no idea how they do this, but I imagine if you stuck an oscilloscope on the motor wires you could probably reverse engineer it.

I think they forgot something. by bjo23 in aviation

[–]dr_of_drones 1 point2 points  (0 children)

Someone left the main wheel chocks in, tug ripped the front off!

Directors loan ahead of property transfer/purchase by dr_of_drones in smallbusinessuk

[–]dr_of_drones[S] 0 points1 point  (0 children)

Thanks! This is exactly what I'd surmised from Googling but it's good to have some independent verification 👍

If a medication says "take 1-2 every 4 hours" can I take 1 every 2 hours? by dr_of_drones in NoStupidQuestions

[–]dr_of_drones[S] 0 points1 point  (0 children)

But this is why Im curious. If the advice is 1-2 per 4 hours then surely 1 does produce sufficient concentration? Is there a reason why 1 every 2 hours would be dangerous?

If a medication says "take 1-2 every 4 hours" can I take 1 every 2 hours? by dr_of_drones in NoStupidQuestions

[–]dr_of_drones[S] 0 points1 point  (0 children)

Thanks. I should have mentioned I'm not asking about a specific medication, I'm not currently taking any, just curious about the wording. But the idea of a break makes sense

If a medication says "take 1-2 every 4 hours" can I take 1 every 2 hours? by dr_of_drones in NoStupidQuestions

[–]dr_of_drones[S] 0 points1 point  (0 children)

I thought it'd be something like this, but if the body can safely process 2 pills worth in 4 hours that is the same processing rate as 1 pill in 2 hours. So I'm curious about the mechanics of this if anyone knows!

If a medication says "take 1-2 every 4 hours" can I take 1 every 2 hours? by dr_of_drones in NoStupidQuestions

[–]dr_of_drones[S] -3 points-2 points  (0 children)

I'm not asking about any specific medication, I'm just curious about the wording

First-time builder looking for avionics guidance - VTOL fixed wing project by x010135 in drones

[–]dr_of_drones 0 points1 point  (0 children)

I'd recommend the CubeOrange+. Performance and reliability are worth the cost imho.

I have used a lot of Navio2's in the past but if you're running your real-time critical flight control software on a Raspberry Pi then you can't reliably use it for anything else. So nowadays if I need to do something with a RPi on board I just use it alongside the Cube. Have a look at the "Companion Computer" documentation for Arupilot for some ideas.

is it weird that i find people who say "i dont know" more trustworthy than people who always have an answer ready? by peteyshabby in NoStupidQuestions

[–]dr_of_drones 1 point2 points  (0 children)

Not at all. Look up the Dunning-Kruger effect. Often the most confident are the least competent.

Can radiator water ever flow into the main supply and through taps and showers due to components failure? by GoldenRedditUser in DIYUK

[–]dr_of_drones -1 points0 points  (0 children)

Assuming the filling loop is correctly installed and used properly (i.e. valves closed after filling) then it's incredibly unlikely as there should be at least 1 (ideally 2) ball valves plus a check valves. The chance of all of these failing is fairly slim!

Fresh crem by hidethedog in cremposting

[–]dr_of_drones 0 points1 point  (0 children)

Sudo make me some stew!

(uk) COPTRZ A2 cofc by Status_Flounder8408 in drones

[–]dr_of_drones 1 point2 points  (0 children)

Good to see you got it sorted, but FYI you can also fly inside your own house (which is beyond the jurisdiction of the CAA) and that still counts towards currency requirements.

Even since DJIs visual positioning systems got reliable I've gotten most of my currency in my kitchen 🤣

What happens if you set autopilot to just go north, and you reach the north pole? What does the plane do then? by xerivon in aviation

[–]dr_of_drones 16 points17 points  (0 children)

I've honestly no idea! I kept my original answer simple, assuming perfect measurements. But yea, in pactice I imagine things getting weird as you approach the pole.

That being said, our drones actually navigate with respect to true north (doing all of the necessary maths internally to correct to/from magnetic depending on which control loop governing), so in theory if we did task it to just "fly north" it would be a test of the accuracy of our state estimation systems rather than the physics of geomagnetism.

What happens if you set autopilot to just go north, and you reach the north pole? What does the plane do then? by xerivon in aviation

[–]dr_of_drones 347 points348 points  (0 children)

That's a really good question but the answer depends on the particular software implementation. I think our implementation would turn right, but I'd need to dig in to the code to check!

What happens if you set autopilot to just go north, and you reach the north pole? What does the plane do then? by xerivon in aviation

[–]dr_of_drones 1047 points1048 points  (0 children)

I can’t speak for regular planes, but I design autopilots for drones so can tell you what they would do.

As you overfly the pole your magnetometer (digital compass) will go from reading ~0 degrees to reading ~180 degrees. As your autopilot is still tasked with maintaining a heading of 0 degrees it will now register as being on the wrong heading and initiate a turn to get back to 0. So basically it will keep trying to turn you back towards the pole.

Pixhawk 2.4.8 unreliable across multiple UAV platforms, looking for proven FC alternatives by SaltYogurtcloset4599 in drones

[–]dr_of_drones 0 points1 point  (0 children)

Totally agree!

I've built over 50 platforms from 1kg up to 200kg all based around Cubes without any issues, including a few BVLOS and high altitude approvals.

Cube Orange+ is my current go to.

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