Maximus Su

general recent conversations

Discussion between Maximus Su and chrisl

Imported from a comment discussion on arduino.stackexchange.co...

Maximus Su

Dec 11, 2022 03:06

U suck !!!!!

Maximus Su

Dec 11, 2022 03:04

So, good luck !!!!!!

Maximus Su

Dec 11, 2022 03:04

Then, build one in order to learn. There are a lot of bugs that you cannot see and i am pretty sure your MPU 6050 has the problem too a 100%

Maximus Su

Dec 11, 2022 03:03

Have you even tried to build your own drone even before judging otherss??

Maximus Su

Dec 11, 2022 03:02

I finally get my drone working already because of that secret MPU 6050 gyroscope code

Maximus Su

Dec 11, 2022 03:01

Just a piece of advice, you must try hands on experience of what the other person is doing to even to able to help him out. Do not just say using words or your brain without using your hands on work expereince to understand what problem the OP has!!!

Maximus Su

Dec 11, 2022 02:59

Yo chris, can i ask a question?

Maximus Su

Dec 6, 2022 03:45

Oh, there is a same guy doing the same thing, are you able to help her out?

Maximus Su

Dec 5, 2022 16:39

My overall setup is an encoder as shown in youtube.com/… and a microbrushless motor (Can easily controlled by PWM) and yea, some transistors to amplify the PWM power to be fed to the motors :)

Maximus Su

Dec 5, 2022 16:33

But, they didn't provide the Arduino code sadly

Maximus Su

Dec 5, 2022 16:33

Exactly like what this video youtube.com/watch?v=6UKOWhIRKEw&ab_channel=EdX

Maximus Su

Dec 5, 2022 16:31

just need PWM to control it

Maximus Su

Dec 5, 2022 16:31

The motor I used, however, is a small mini DC brushless motor, 3.7V mini one

Maximus Su

Dec 5, 2022 16:29

of the stick

Maximus Su

Dec 5, 2022 16:29

Actually, my code works, just that after 10 seconds, the encoder reading gets bad and loses its correct angle of rotation

Maximus Su

Dec 5, 2022 16:28

And I combine it with my encoder to actually rotate a propeller suspended on the rotary encoder as shown in this youtube.com/watch?v=MmF5qTqPTxU&ab_channel=NabilMohammad

Maximus Su

Dec 5, 2022 16:27

Hi I updated my PID code and my PID code is copied from youtube.com/…

Maximus Su

Dec 5, 2022 16:25

Right, I updating it now

Maximus Su

Dec 5, 2022 15:57

Have you used these type of rotary encoder which I bought the same from the Youtube video before? Well, actually I was trying to implement PID code under the
Serial.println(county); , but it affects the rotary encoder steps. And without the PID code or when I just put simple if statement or command under the Serial.println(county); , everything works smoothly. Haizz, my code definetely has problem. Is the code I wrote correct haha?

Maximus Su

Dec 5, 2022 15:49

Hi chris, I have updated my code to exclude the temp? Is it correct? Pardon me, we have quite a discussion here

Maximus Su

Dec 5, 2022 15:48

A big thank you for your answer, by the way, very concise :)

Maximus Su

Dec 5, 2022 15:48

Hi chrisl, I have updated my code to use noInterrupts() in my post, may I know if it is correct? :)

Maximus Su

Dec 5, 2022 15:48

Hi, I have used your code above, and it does not work, problem still the same. So, I have tried the millis() function in my updated code in my post :) but it still gives the same problem. May I ask if my updated code in my post is correct :) ?

the k tree

app.element.io/#/room/#ngnk:matrix.org

Maximus Su

Jul 8, 2021 06:48

hi guys

Maximus Su

Jul 8, 2021 06:48

hi guys

$Mathematics$ Discussion between Pythagoras and Max…

Imported from a comment discussion on math.stackexchange.com/q...

Maximus Su

Jul 2, 2021 09:50

instead of f(n) + f(0) , this is the correct one

Maximus Su

Jul 2, 2021 09:49

I just wanna ask that after the word "Noting that B1 = -1/2, this leads to the result" in the link, shouldnt it be -f(n)+f(0)

Maximus Su

Jul 2, 2021 09:48

mathpages.com/home/kmath643/kmath643.htm

Maximus Su

Jul 2, 2021 09:48

I found all the answers we are looking for here

Maximus Su

Jul 2, 2021 09:47

Hi @Pythagoras, its me again:)

Maximus Su

Jul 1, 2021 18:06

Japan

Maximus Su

Jul 1, 2021 18:06

Thank you for your valuable time. I am from Asia btw

Maximus Su

Jul 1, 2021 18:05

ok sure. I assume you are a math teacher sir?

Maximus Su

Jul 1, 2021 18:02

This Maclaurin formula derivation from taylor series should match the wikipedia one, the wikipedia one can help to get good closed form approximation of any sums

Maximus Su

Jul 1, 2021 18:01

n^2 or something else

Maximus Su

Jul 1, 2021 18:01

i just used to get closed form of for example n^3

Maximus Su

Jul 1, 2021 18:00

oh i dont want infinity

Maximus Su

Jul 1, 2021 18:00

This author is using +f(a) same as wiki

Maximus Su

Jul 1, 2021 17:59

if the formula +f(a) is changed to -f(a), the summation of n^3 will differ greatly

Maximus Su

Jul 1, 2021 17:58

Hi, scroll to page 8

Maximus Su

Jul 1, 2021 17:58

phys.uconn.edu/~rozman/Courses/P2400_16S//downloads/…

Maximus Su

Jul 1, 2021 17:53

so you mean +f(a) which has the denominator of 2 in Wiki can actually be changed to -f(a) as it will not affect the results much?

Maximus Su

Jul 1, 2021 17:53

Hi Sir, Shouldn't B which is y(1)-y(0) be y(1)+y(0) as stated in Wikipedia. I shared the link above to check it out.

Maximus Su

Jul 1, 2021 17:53

I am confused on that part only, cuz it must match the exact formula stated in Wiki :))

Maximus Su

Jul 1, 2021 17:53

A is the integral

Maximus Su

Jul 1, 2021 17:53

I am confused on that part only, cuz it must match the exact formula stated in Wiki :))

Maximus Su

Jul 1, 2021 17:53

i got it now lol

Maximus Su

Jul 1, 2021 17:53

Thank you for your help !! So kind

Maximus Su

Jul 1, 2021 17:53

drive.google.com/file/d/1sxTiXSXNuM6cWQ-_C31EZR2oKrgOeO_8/…

Maximus Su

Jul 1, 2021 17:53

Hi @Pythagoras may i know how do you got the matrix above? Is it by guess?