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Use in reference to electronic speed controllers, used with both brushed and brushless DC motors on drones and model aircraft.

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4
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35 views

ESC burned twice

I got burned my ESC twice, this makes me think this is not a coincidence, but I'm doing something wrong. Would be glad if someone would be able to point it out. I have a simple drone, with the ...
5
votes
1answer
50 views

Estimate safe ESC curerent for 4108 600kv motors?

Is there a way to safely guess what current ESC's will need to be with this motor (or any motor in general)? The motors are rated 23A in the table, but that's only with a 4s; I might use a 6s in the ...
6
votes
2answers
202 views

Unrecognised ESC motor connector

I purchased an ESC and a Speed 400 motor about 17 years ago with the intention of building my first electric powered model plane. Life took its various turns though and my time for R/C modelling dried ...
8
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1answer
76 views

Is there a method to wire a brushless motor to an ESC so it spins in the required direction first time?

So I know that three phase motors will reverse direction when 2 wires are swapped round, or that the direction can be changed in software (such as BLHeli). But is there a method to get it right first ...
5
votes
1answer
43 views

4 in 1 ESC and FC won't turn on when connected together

After crashing my drone recently, my ESC and flight controller won't turn on (the power led lights up on the FC, but nothing else works either it doesn't anymore, or I was wrong before) any more when ...
6
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3answers
106 views

How to determine the lowest safe ESC current rating for a drone build?

I was planning to build a quadcopter and was wondering how I should decide what ESC to get. I'm asking about ESC current ratings. I am building a 7 inch drone using 4s with 2306 1900Kv motors. I have ...
7
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1answer
65 views

Grinding sound on FPV motor but no apparent damage

I have been testing a new brushless motor for an RC plane. It is a 2200KV motor controlled by a 30A BLDC ESC. I heard a grinding noise coming from my motor, as demonstrated in the following video: ...
1
vote
1answer
86 views

How to prevent an ESC from overheating?

I have a 5-inch drone with individual ESCs on the arms of the frame. The ESCs tend to get very hot (somewhere around 70°C) and I'm not sure what is causing this and how to keep them cooler. Are there ...
2
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1answer
49 views

How to measure the RPM of a drone motor using Betaflight?

I am interested in finding out the RPM of the motors on my drone with certain amounts of load and without load. Is there some way to measure the RPM of a drone motor using BetaFlight? If not, is there ...
2
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1answer
50 views

How can I set up appropriate motor mixing for a frame of a custom layout?

First, whilst this post is mainly about how to program in Betaflight, it also involves ESC layout so I feel it is appropriate for this Stack Exchange. For example, I intend to create a frame that is ...
5
votes
2answers
126 views

When I power up my flight controller and ESC's, I hear a series of beeps. What do all of the beeps mean?

How can you use the series of beeps you hear when powering up to diagnose issues with your equipment? Should all of the beeps be synchronized or is it ok if they are slightly off? Are there ...
1
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0answers
91 views

What motors, battery and ESC to use for a drone of payload >50kg?

So I am designing this octocopter which can lift up a payload of more than 50kg, min 50kg for an intra-city package delivery drone. From what I figured, with 8 motors, the safest thrust needed will be ...
5
votes
1answer
83 views

Does active braking help protect propellers from damage?

As far as I know with active braking option enabled in BLHeli32 the speed controller will counteract the free spinning of the rotor according to throttle value hence making it slow down quicker when ...
6
votes
3answers
106 views

What happens if i select the wrong number of motor poles in BetaFlight?

what kind of effect has on my gear and flights to have set a different number of motor poles that I actually have installed. for example, my motors have 14 poles but I set 12 on BetaFlight or vice-...
6
votes
2answers
112 views

Can I salvage a 4in1 ESC?

I have a 4in1 Brushless ESC that only one ESC burned out on, but the rest should still be usable. Is there a way to salvage it and use a single ESC to replace the burned one or something? If so, how ...
3
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1answer
72 views

What is DSHOT in ESCs?

I've heard that modern quadcopters use a DSHOT protocol. Could you describe what it is? What's its purpose?
3
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1answer
74 views

What happened to DSHOT1200 support in Betaflight?

I just went to update my flight controller from 3.5.3 to 4.1.0, and I noticed that some time in the past two years the option to enable DSHOT1200 was removed from Betaflight. Does anyone know why ...
3
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2answers
61 views

How hot should an ESC get?

What is the maximum safe temperature that a brushless drone ESC should get? What could happen if a brushless ESC were to go over its maximum temperature tolerance?
4
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3answers
85 views

Can I run two motors off of one ESC?

Normally, a dual-motor plane has two ESCs but could I connect two brushless motors to one ESC? What would happen to the torque and speed of each of the two motors connected to the ESC?
5
votes
1answer
36 views

How to create a motor startup tone with a BLHeli ESC?

I am using a 32bit DShot1200 ESC, how can I make a custom startup sound for when the drone is powered on?
2
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4answers
71 views

Effect of motor load on ESC?

I know that when a prop is caught on something or is slowed down by something it can put extra strain on the ESC or even burn it out. If I was using a 2207 motor with an unusually large and heavy ...
6
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2answers
41 views

ESCs for inverted flight?

What types of brushless drone ESCs are reversible and will work for flying inverted?
11
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3answers
95 views

What does BEC, SBEC, UBEC, and OPTO mean for brushless motor ESCs?

I'm looking to purchase an ESC to go with a brushless motor. Many of the product pages include terms related to a BEC, such as SBEC, UBEC, and Opto. What do those acronyms mean and how should I ...