Questions tagged [esc]

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

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BLHELI32 DShot600 or DShot150 is not activated in my ESCs from my code written in c c++ in testing with 3 different ESC

My question is more related to inner working of ESC than coding. Particularly how to activate a particular protocol like DShot600 or Dshot150. Assuming a generic BLHELI ESC has all these protocols. I ...
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How to calculate the ESC and the LiPo?

I would like to know how many amps the ESC needs in order to use my brushless motor, and also which LiPo battery I'm going to need. I want the know how to calculate this, so that I can do it myself ...
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1 answer
20 views

How can I use a Pixhawk 4 power distribution board (PM07) to power an older pixhawk?

I have the PM07 power distribution board designed for the Pixhawk 4 but I currently have a Pixhawk 2.8.4. On the data sheets I can clearly see a 5V output but I am not getting any power from those ...
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  • 43
5 votes
2 answers
67 views

Will different brushless motor sizes work with the same flight controller and esc

I recently built a 5-inch quad using: Diatone Mamba F405 Mk2 F40 Mk2 3-6S 30x30 Stack/Combo (F4 FC / 40A 4in1 ESC) Motors: iFlight Xing-E PRO 2207 1800Kv Motor with DShot 600 and 4S battery cell. I ...
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3 votes
1 answer
110 views

Brushless Motor not spinning when controlling with Raspberry Pi, PWM and ESC

I'm currently working on a drone which is controlled by a Raspberry Pi. I try to control the motors by using PWM on the connected ESCs, which is described in many guides and forums. For that I use the ...
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3 votes
1 answer
158 views

Motor doesn't work, ESC doesn't calibrate

After I figured out why SAFE never turned off, now I'm stuck because my motor won't spin and I can't enter calibration mode of the ESC. After turning on the plane, it does three startup beeps in ...
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4 votes
1 answer
71 views

Choosing ESCs for an Autonomous Drone

I'm about to build my first drone. I chose the PixHawk 4 with PX4 as a flight controller and the Raspberry Pi Model 3B as the companion computer. I am not sure about the ESCs yet. So far I'm ...
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3 votes
1 answer
46 views

Lipo battery with an ESC and a BLDC motor

I'm not sure if I can connect four brushless dc motors to my Lipo battery. I don't know how to calculate it. The brushless motor I have is the Turnigy L2210C-1200 brushless motor (150w) and the Lipo ...
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3 votes
1 answer
85 views

ESC overload protection at stall current?

I am trying to build, for the first time a drone, on a F330 frame, 30a ESC and 1000KV 2212 motors... But I destroyed 2 ESCs in the process. It literally burned up when the drone falled and the ...
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2 votes
2 answers
45 views

Brushless Motor Acting Weird

I recently got a brushless motor upgrade set for my RC car (I have previously asked questions about it), and there seems to be something wrong with it... The steering servo works fine. The brushless ...
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4 votes
1 answer
44 views

Brushless Motor/ESC Voltage Cut-off

I got an ESC and brushless motor set for my RC car. After I finally got it to work, I put my car back together, but then when I turn on the transmitter and then the ESC, the motor emits a "beep&...
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5 votes
2 answers
76 views

Brushless Upgrade for RC Car

I was told that if my question was about motors and ESCs than it would be okay to put it on here even though it has to do with an RC car... I am wanting to do a brushless upgrade for my WLTOYS 12428 ...
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3 votes
1 answer
52 views

Why is the ESC not giving enough current for my propeller?

So I have a Hobbywing Skywalker 80 amp ESC and Sunnysky X3520-720 that I just did a ground test with a power meter. Results gave only about 31 amps at 16.3V which is way under what I was expected (...
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3 votes
0 answers
41 views

Dshot 600 ESC is not responding to the transmitter

I'm building a drone with arducopter 2.8 (ArduCopter V3.2.1) and I'm using the DSHot 600 (BLHELI_S) Opto ESC's as my ESC and when I connect the Opto ESC to the arducopter and arducopter to the ...
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2 votes
1 answer
28 views

How to connect Opto esc to BLDC Motor

I'm using 30A Opto 2-4s LIPo Blheli-S ESC for my drone. And I'm currently confused about how to connect the BLDC motor to the ESC. I found nothing online that currently explains the type of ...
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4 votes
3 answers
286 views

Are the power connections for BECs of ESCs made in parallel or series with each other?

I see the 5V power pin of BECs all are connected to the flight controller, but within the flight controller, is this registered as a 4 5V batteries in series or parallel? In series would not make ...
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7 votes
1 answer
315 views

what is the voltage output from the ESCs of drone motors?

the flight controller i am using is a custom one, which is a teensy 4.0 microcontroller. it cannot have more than 3.3V into its GPIO pins. I know I can use the 5V from the BEC of the ESC to power my ...
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7 votes
2 answers
90 views

One of my motor don't turn if throttle is raised too rapidly

I've recently have an issue with my quad. One of my motor don't spin if I raise throttle too rapidly. If i raised it slowly i the motor turn correctly. Only one of my motor have this issue and i've ...
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1 answer
124 views

ESC shutting down when motor loaded

I have a BLDC motor and a 300 amp ESC, The ESC shuts down after a few seconds at full load. The motor only draws 2 amps at full throttle, full load and the voltage only drops .5 volts. The battery is ...
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2 votes
1 answer
83 views

Questions regarding drone components

I am wanting to build an ultra-light manned bi-copter from scratch, but I first must learn about the components, which is why I am here. I am working with a 43kv (24s rated, 192 max Amp) 70kg thrust ...
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3 votes
0 answers
53 views

BLDC Motors not spinning at commanded RPM

I have a F450 Quadcopter frame with BLDC motors of 1000Kv and ESC (simonk) 30A each. I am trying to verify if the bldc motor rpm output at a commanded rpm is same as commanded rpm. I am using ...
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4 votes
1 answer
65 views

Why isn't my manual DSHOT600 programming of a HobbyWing ESC not responding to direction change?

I wrote a firmware for an STM32L4 board to talk to a HobbyWing XRotor Micro 60A running BLHeli_32. I can drive each motor indiviudally just fine using DSHOT600 by bit-blasting the signals out of GPIO ...
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  • 233
5 votes
3 answers
134 views

Why can't quadcopters handle failure of one rotor?

Ardupilot can detect (and it logs) motor output mismatch. I think detecting in flight motor failure is possible with modern firmware and flight controllers. Then if one rotor fails, why can't we have ...
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6 votes
1 answer
369 views

Connecting 4 in 1 esc with power module

I have a 4 in 1 iflight esc currently connected to my motors. I am attempting to interface it with my flight controller (Pixhawk 4), which comes with a power module (https://docs.px4.io/master/en/...
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  • 309
8 votes
1 answer
506 views

What is Commutation Enhancement in BLHeli_M and what should i set it to?

In the BLHeli_M version of the BLHeli Configurator, theres an Option for Commutation Enhancement. By default its set to Async-PWM but it can be set from 3%-CE to 100%-CE. What does this Parameter do ...
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5 votes
1 answer
65 views

My esc cuts the motor when I move control surfaces a lot

I finally built my plane and started testing it on my workbench. If I moved the servos a lot (using my transmitter), the motor would cut out, the ESC would play a tone similar to when I first turn it ...
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6 votes
1 answer
720 views

Wiring a 4-in-1 ESC to an Arduino Uno

I have four brushless motors that I want to control using an Arduino Nano. I was looking at getting a 4-in-1 ESC controller similar to this one on amazon. At this point in my project, I'm more ...
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6 votes
1 answer
73 views

Help finding ESC for brushless motor

I'm very very new to hobby electronics however I have studied a bit about basic electronics in school. I have four EMAX 0802 Brushless Motors and I want to drive them with an Arduino Nano. I know that ...
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5 votes
1 answer
71 views

Why does motor not want to go above 2/3 thrust?

This is related to my past ESC troubles. See link for some flight history. I tried the recalibration as suggested by ifconfig, which sadly didn't work. But now the motor will not go above 2/3rds ...
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3 votes
2 answers
410 views

Motor will not go above half thrust. Why and how to fix?

I fixed the esc of my aircraft, but now it won't go above half thrust for whatever reason. Here is a short record of the electronics in the craft; Crashed twice, broke esc, soldered 3-pin ground ...
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7 votes
2 answers
80 views

DJI F450 ESC calibration fail

everyone. I am building a DJI F450 clone. I've got everything attached except for the propellers. The Pixhawk connects to my mission planner via USB. The remote controller is paired with the drone. ...
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5 votes
4 answers
219 views

Is it common to break ESCs?

I'm pretty certain my ESC is broken, so I went looking for some on amazon. I found a decent one for a good price, as well as a 4 pack that was a better cost per unit. I don't really want to have extra ...
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3 votes
1 answer
623 views

ESC power up beeps sound twice: du-du-du...du-du-du beep-beep

Just recently, my power-up beep sounds have changed. The normal sequence is just du-du-du beep-beep for ESC power, then throttle signal, right? Now I get du-du-du, pause, du-du-du (again) beep-beep. ...
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3 votes
1 answer
72 views

Flight controller or ESCs on Eachine Viswhoop not booting properly

After last flight my Eachine Viswhoop stopped booting properly and arming (link to gfycat with sound). When connecting battery to drone I can hear FC beeping but don't get second set of "beeps&...
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  • 131
3 votes
1 answer
56 views

Vibrating like a jelly when takeoff

I have Kotleta 20 UAVCAN ESCs. When I trying to increase throttle, motors are vibrating like a jelly. How can I configure my ESCs via development port? What are best options for non vibrated flight? ...
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1 vote
1 answer
454 views

Is there a benefit to using multiple capacitors on FPV drones?

From what I've heard, you need at least one capacitor on the ESC of a drone so that it can smooth out the voltage spikes to prevent electrical noise and improve the longevity of the ESC. If this is ...
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  • 5,510
5 votes
1 answer
844 views

Betaflight with Mamba F405 MK2 stack 40A ESC's and XING-E 2207 motors problem

I build a quad using Mamba F405 MK2 stack 40A ESC's and XING-E 2207 motors. Here are some pictures of my configurations on Betaflight and BLHeli Configurator: https://imgur.com/a/mFLDiVp Also video of ...
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  • 225
4 votes
1 answer
121 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 ...
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  • 141
5 votes
1 answer
95 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 ...
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  • 641
6 votes
2 answers
226 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 ...
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8 votes
1 answer
100 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 ...
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5 votes
1 answer
539 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 ...
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6 votes
3 answers
803 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 ...
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  • 5,510
7 votes
1 answer
713 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: ...
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1 vote
2 answers
847 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 ...
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  • 5,510
2 votes
1 answer
685 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 ...
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  • 5,510
3 votes
1 answer
675 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 ...
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5 votes
2 answers
8k 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 ...
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  • 1,110
1 vote
0 answers
161 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 ...
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5 votes
1 answer
100 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 ...
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