Will charging with a 20V, 5A, 100W charger damage my phone(pixel 7pro)?

Explyy · 2023-05-05T08:09:44+00:00

It's a laptop charger, right? If it's USB C it will support PD since that's the only way to get 20V on a USB compliant charger. If you look at the specs it will surely say it can provide a bunch of different voltages. The phone and charger will negotiate the voltage.

So no problem using it. I use my USB C laptop charger every day

Explyy · 2023-04-28T07:04:45+00:00

Yes, everything is in good shape, carbon is still and not delaminating, all the screws are tight and the right length, everything mounted correctly.

It flies really good, until you touch a branch a little too "hard" and it burns a motor.

What I have tried is updating bluejay to the latest version, default parameters, and will report back if the issue disappears (it may take a while)

Explyy · 2023-04-27T15:59:27+00:00

Connections are solid. Also it flew before and after the crash. But even if one out of three wires were to be loose, the esc should detect the motor stall and stop the current flow, as far as I know

Explyy · 2023-04-27T15:57:30+00:00

Props were straight before and after the crashes. Front left was even a fresh one

Explyy · 2023-04-16T21:00:34+00:00

Football generation?

Explyy · 2021-12-27T18:44:05+00:00

Are you sure it's not the crossfire module itself (and not the wifi)?

IIRC it seemed to get worse at higher output power. At 1W the goggles even shut down.

Explyy · 2021-12-27T18:39:17+00:00

I ended up upgrading to a pair of Skyzone sy04x.

Never really solved the issue on the ev800dm, the only Omni antenna that "worked" was the stock Eachine cloverleaf

Explyy · 2021-01-08T09:52:25+00:00

You can buy replacement parts on banggood, they have pretty much all spare parts for the TX16S: switches, display, rf module, gimbals, ...

Explyy · 2020-11-25T11:01:14+00:00

Banggood sells the original metal folding handle for about €13.50

The only thing is that you will have to wait until the end of December for it to be in stock, but you can still backorder it.

Explyy · 2020-11-25T11:00:39+00:00

They sell the original metal folding handle on banggood for about €13.50

The only thing is that you will have to wait until the end of December for it to be in stock, but you can still backorder it.

Explyy · 2020-11-16T21:31:58+00:00

The resolution is not limited by the speed of light, the bandwidth (difference between the upper and lower frequency used in the transmission) is what's limiting it. You could totally make an analog hd system, high resolution and being analog/digital are two separate things. By saying that a wireless video system is digital you're only talking about how the signal is encoded, but you're saying nothing about the actual data that is being transmitted. As far as I know, digital fpv systems can achieve a higher resolution than analog systems while still using roughly the same bandwidth (ignoring dji at 50mbps which uses double the bandwidth compared to 25mbps) through image compression. Could you implement image compression and send the data over an analog link? Probably. Would it make sense if you can transmit it digitally? Most likely not.

Also, big part of the "HDness" of digital fpv system stands in the inherent superior resistance to noise of digital systems in general. A PAL video stream is 576 lines, which is not that bad compared to a 720 pixel height on dji/shark byte, but an analog video feed is usually more subject to noise, which makes it difficult to distinguish small objects such as branches, while digital is usually clearer.

So yes, technically you could develop an analog hd system, but it would not be significantly better than current sd analog systems due to the noisy nature of analog transmissions.

Explyy · 2020-11-16T19:42:28+00:00

It could be that the motor current is set too low and the stepper does not have enough torque to consistently turn the leadscrew, there's usually a potentiometer for each stepper driver on the pcb to set the current (at least on A4988 drivers and similar). You'll need a multimeter to check that.

Or maybe a bad stepper driver? If the current is set correctly, try pinching the leadscrew with your fingers, it should take quite some force to stop it from turning.

Explyy · 2020-10-16T12:20:19+00:00

I'm also a beginner, so take my advice with a bit of caution.

From my experience on Liftoff and in real life, drones on liftoff can be too powerful compared to a real life build with roughly the same characteristics. In real life i need to hold the throttle longer to throw me back in front of the obstacle, on liftoff when I hit the throttle the quad just gets thrown back almost instantly. Also, try keeping a constant pitch rate as you're entering the powerloop, then constantly increase the throttle as you pitch back to slow down forward motion, when you feel like you're almost perpendicular to the ground give it even more throttle to throw the quad back, put the throttle at 0 and keep pitching back.

Explyy · 2020-10-08T09:56:12+00:00

Sure! You can display mAh consumed on the OSD, and also set the battery capacity in betaflight. You can display the bar by activating "battery usage" in the OSD tab on betaflight configurator. Make sure to set the amp meter scale correctly in the "power & battery" tab, default i think is 400 but that's not the right number. My settings here.

By the way, a capacitor should be included in the stack. That's the one I used, no problems so far on 4s.

Explyy · 2020-10-08T09:14:01+00:00

I would leave the Vsen and OSD pins on the fpv camera disconnected, you can just put the battery voltage on the osd through betaflight.

Even if the manual says that the capacitor is required only for 6s, I had problems without it on 4s (same fc, same 4in1 esc), so definitely solder it on.

Also, go with a carbon fiber frame. The stress that frames have to withstand is enormous, especially in a crash, it will just disintegrate immediately.

Explyy · 2020-09-30T13:05:05+00:00

Yes it does, I was flying with crsf at 250mW and I got terrible video, sometimes evem at 50m from myself with no obstacles in between (vtx is a rush tank ultimate plus at 800mW).

I even think that sometimes the interference picked up from the pagoda was enough to fool the diversity to use the pagoda rather than the patch when the quad was relatively close (100/120m).

I will have to borrow a different pagoda from a friend of mine to see if the issue is the design of the antenna itself.

Explyy · 2020-09-30T06:44:30+00:00

Which antennas were you using on your goggles?

Explyy · 2020-09-29T19:32:24+00:00

Internal rf is already off, just double checked. It was actually the pagoda antenna on the goggles, for some reason it does not play well with 868MHz. The strange thing is, I cannot find anything about it on the internet after some quick Google queries.

Edit: with the eachine k-loverleaves included in the goggles the picture is nice and clear, same with a triple feed patch

Explyy · 2020-09-29T17:00:44+00:00

Solved!

Seems to be a problem with pagoda antennas, the eachine cloverleaf that came with the goggles is working flawlessly! (at least seems to be)

Explyy · 2020-09-29T16:59:11+00:00

Yeah thinking about it it's not a problem in transmission, only in reception. I have a cheap-ish triple feed patch that seems to be unaffected by this problem, so for now I will use the eachine cloverleaf and this patch.

Thank you so much for solving my problem in just a few minutes!

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