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| How to control brushless DC motor speed with my ESC? |
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| Mechatrommer:
thats the thing i was playing about and have many in stock, the air ESC type, just not up to 80A, the rc transmitter/controller has flip joystick value capability. the motor is one direction, once the joystick is correct, if motor in wrong direction, 2 wire flip is the trick. that land rc i only saw my brother played it so it must be different since motor can go 2 directions, but i believe 2 wire flip trick applied. one brand came with some programmer pad that i still have no clue how to use, the ESC just works OOB with no programming hassle, just simple up and down and its armed. |
| beanflying:
To reverse the motor direction in the case of aircraft or land/water vehicles and controllable direction you are correct that switching any two motor wires reverses direction like a conventional 3 phase industrial motor. So yes you are correct on that. The signal however needs to get the correct pulse series to arm and be programmed in most cases. Some ESC's can be software programmed to reverse also so don't even need a wire swap for a change in direction. Without knowing the operating details of the ESC the original poster has a lot of the advice here isn't necessarily good advice. As you changed your post to reflect yes some have a programming card too like this one Some of mine are can be hooked up to a laptop as well and then there is the more common stick programming approach. |
| radar_macgyver:
--- Quote from: drummerdimitri on December 12, 2018, 10:23:58 pm ---Can't even get the motor to run. So what is needed to get this thing going :-// --- End quote --- As @beanflying mentioned, get a servo tester, like this one: https://hobbyking.com/en_us/hobbykingtm-servo-tester.html Connect the control cable from your ESC to the tester, make sure the knob is at zero, apply power. The motor should emit a few beeps indicating that the ESC measured the PWM output of the tester and stored it as 'zero'. Turn up the throttle, the motor will spin. Since they are fairly cheap, get a couple of them. Once you have the ESC working, you can hack the throttle that you bought and wire it in place of the pot inside the servo tester. |
| drummerdimitri:
I got myself a function generator that can create PWM signals. I've tried a 50 Hz signal with a 1 ms pulse duration and a 5V RMS/Vpp signal but the thing just wont budge! There are Three wires that connect to the ESC, a black (ground), a red (5V) and a white (signal). I've tried feeding the signal into the ground and white wires but still nothing. Am I wiring thing wrong? What am I missing here? :-// |
| beanflying:
1mS is generally off. It is a range from 1-2mS square wave for control generally. Failing that do you have an instruction sheet for the ESC? EDIT : Found you an instruction sheet https://img.banggood.com/file/products/20151229020656SKU308360.pdf Based on this it can be programmed by control inputs so if you get it WRONG you will need to reset the options again. |
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