Motor Throttle Help

ESK8 Electronics
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#1

Hi guys,

I am currently doing my first build and I am experiencing the following problem: The motor throttle seems to burst randomly, especially at low throttle values. (video: https://drive.google.com/file/d/0B5qHMcrmYIvbalFQQTFqYlpLRkE/view )

My Setup:

I have doublechecked the values transmitted to and received by the arduino, but these do not show any irregularities. Does anyone have a clue what could be going wrong here? Much obliged.

#2

Are you expirencing the same problem with a normal rc remote and receiver?

#3

sadly I don’t own a normal set, so I can’t tell

#4

I would buy the cheapest thing you can find or borrow a friends to test. If it works good with a normal rc remote than the arguing code is the problem.

#5

yeah I figured that that would be a next step. I will try to hook up a potentiometer instead of the bluetooth communication tomorrow and see if the problem persists

#6

The code is wrong.

#7

Change the code with SoftwareServo.
SoftwareServo is inbuilt already, i think. If not download it here.

(hashtag)include “SoftwareServo.h” SoftwareServo ESC;

void setup(){ ESC.setMinimumPulse(800); //800 ESC.setMaximumPulse(2000); //2000 }

Here you change the values, you need to have the softwareservo refresh thing.

ESC.write(value); SoftwareServo::refresh();

#8

thanks, I’ll give it a try

#9

and the values are from 0-180 i believe

#10

I’ve tried to make it work yesterday with the SoftwareServo library yesterday to no avail ( ESC wouldn’t set the min. throttle properly, probably should try with other values than 800) and after reading a little bit about the reliability problems of self-made bluetooth solutions I’ve decided to go forward with a conventional car remote. I guess the app + Arduino setup was more for testing purposes anyways, don’t think that riding around with a smartphone in hand would be a good idea :smile:

Thanks for the fast replies.

#11

Hehe, but did you calibrate your ESC?

#12

During calibration I could set the max throttle while transmitting 2000, but when setting the min throttle of 800 the esc wouldnt take it and just did nothing.

#13

hange the values? from 2000 to 3800?