วีดีโอ

I have a question, I'm using a drv8825-ish in 1\32 micro step, and the motor moves terribly slow. What can I do to make it go faster? My ultimate goal is just a constant rotation speed which varies per motor so that I can use it in my drawing machine

How did you get it!??? Thank you very much!!!!

volatile long StartTime = 0; volatile long CurrentTime = 0; volatile long Pulses = 0; int PulseWidth void setup() { Serial.begin(9600); pinMode(RCPin, INPUT_PULLUP); attachInterrupt(digtalPinToInterrupt(RCPin),PulseTimer,CHANGE); } void loop() { if (Pulses < 2000){ PulseWidth = Pulses; } Serial.println(PulseWidth); } void PulseTimer(){ CurrentTime = micros(); if (CurrentTime > StartTime){ Pulses = CurrentTime - StartTime; StartTime = CurrentTime; } }

Excellent video - Thanks! Consider using unsigned math on micros() it simplifies the code (no if() needed). Consider a small state machine in the inyerrupts. On a rising edge save time and on falling edge compute delta and set a new system state. Thid avoids some complications and can help clarify the interface.

if yes can you provide the circuit diagram and code for it

can we control the position of stepper motor with tb6600 and potentiometer

Please could you release code for this that uses Rc PWM for the control input? My personal use requirement is 2 Rc channel input for 2 stepper controls so this would work great for me if I could use Rc input to control it. Steve.

Oh wow this is incredible, I also manage to make the Y axis modification work on Mac, you just need to do the modification in VScode, thank you so much kind sir.

Thanks!!!!!

ขอบคุณมากครับ

Outputs were visibly not synchronised.

Quiero fabricar un afilador de herramientas, quiero agregarle un eje mas. Tres ejes que se muevan de forma lineal y un eje rotativo. Display para agregar valores en pantalla para el desplazamiento y valores de angulos para que gire la herramienta. Hay formas que me puedas ayudar?

In this video and on your blog you show schematics and a PCB for two modules to control two motors but the Arduino code provided is only for one, I understand enough to see its only for one but don't have the knowledge to modify it myself for two and would likely just break the code, could you provide the code for the two modules please? I want to use this to control zoom and focus on a motorised lens for a HD FPV system on a Rc plane!

Is it possible to stop the motor at same time with different position?

thanks code works

It's really helpful! Thank you!

thanks a lot

Hi great video. But my code does not work. It just displays a blank plot and says: Animation was deleted without rendering anything

Out of interest, if one motor is moved by hand when stationary, does the other motor follow the other still?

THANK YOU VERY MUCH, you saved me i was looking the documentation or arduino but couldn't find anything so thaaaank yoouuuuu

Hello bro I'm doing a project that will use 3 stepper motors So far I'm still in my prototype for this project (Of 3 engines I'm only testing 1) I was using the L298n driver I saw this driver there and found it more interesting The A4988 It requires less wire connected to Arduino, enabling a greater number of motors connected at the same time, interesting I would like to know if you have seen any difference in practice using these drivers, if, for example, it is more interesting to use an L298N or an A4988 to keep a stepper motor on for longer A big hug from Brazil :)

No matter what value I put on the useState sentence, the plotter stays as default on the x-axis. Any suggestions?

Ok.... but... why? ha ha ha. I was expecting a particular practical reason for that.

I want to do this for arudino nano how much battery required for this and which one where to apply power in arudino nano there power supply pin

Amazing video and absolute gem of a channel! I have just started getting into robotics and had spent weeks struggling with how to solve this. Sod's law I found an old archived post that described something similar on the same day I found this video!! Just wish I had found this channel sooner haha :)

hello. im performing a teste where i need that the sensorValue1 and 2 to be a float. because i need to be very precise. and so when i put float sensorValue1 and 2, in the python code, the append on the list does not accept float value to be assigned. Can you help?

Is it possible for the motor '1' to go around 10 times, and the motor '2' to go around 1 time?

It would be nice if you could be more specific about the parts you used, such as the potentiometer

I watched an hour and a half of videos trying to understand pull up resistors, this is the best video i found and now i get it. Thanks :)

Very helpful video thanks

Does synchronizing also depend on the initial position of the two motors? Since from the beginning we are counting encoder counts, then synchronization only can happen if the motors started at the same position.

Very good video. Where's the code?

This made much more sense of the Accel Stepper Library. Thank you

Worked for the X-axis, thanks!

ı am usinf fly sky FS-İ6x can ı used ıt wıth the same circiut and code

Much appreciated - Needed something like this for a lil project of mine :) Very helpful

Hi, is this working with elrs transmitters ?

can you include python code to copy

Omg that could have been so useful 5 years ago on my highschool project

is this also possible using an esp32

Thanks for this helpful video. Makes sense, and explained at a good pace. QUESTION: Do you have a video to show simple contact closure switch/motor control integration? (i.e. simple code for stopping and starting individual motors with a simple switch) Thank you!

Please, I need your help. I applied this code to the Arduino Nano and Mega and adjusted the pound rate The problem persists: strange numbers appear

Yes, very well done. Clear, simple, and thorough. Quite excellent.

Hey man! Your explanation was clear and helpfull! I've been trying to use this same library to control 2 Nema 17 motors, on my line follower robot. But when add the code to read some IR sensors, it start's to stop the nema motors. After a quick search for similar problems on the internet, I've found that i can't have functions with that library that take to much time. I'm currently using an Arduino Uno, what if I move to a fast MCU, do you think it can solve this problem? I'm open to other alternatives!

I did this on an Arduino Nano and it didn't work

import datetime current_time = datetime.datetime.now().strftime('%Y-%m-%d_%H-%M-%S') filename = 'arduino_data_' + current_time + '.csv' type(filename) print(filename) import serial # import the serial library to establish a connection with arduino import matplotlib.pyplot as plt # imort this library for real-time plotting and named as plt for convienient from matplotlib.animation import FuncAnimation import csv import warnings warnings.filterwarnings("ignore", category=UserWarning) # Define some cotnents to configure serial connection SERIEAL_PORT = 'COM3' # Choose the port connecting to Arduino BAUD_RATE = 115200 # set the communication speed # Using the cotnents to initialize serial connection ser = serial.Serial(SERIEAL_PORT, BAUD_RATE) # now we can you the object 'ser' to connect serial data. we can get byte data from serial port # Initialize empty lists to store data x_vals = [] # to hold the timestamps sensorValue1_data = [] # as y1 sensorValue2_data = [] # as y2 # Create a function to read and process data from Arduino def read_and_process_data(): line = ser.readline().decode('utf-8').strip() # reads a line of data from the serial port. It then decodes the data into a UTF-8 encoded string and removes any leading or trailing whitespace characters before returning the cleaned string data. sensorValues = line.split(', ') # the string is split whenever a comma followed by a space is encountered. The resulting substrings are stored as elements in the sensorValues list. # seperate and convert the timestamp, sensorValue1_data, sensorValue2_data from sensorValues x_vals.append(float(sensorValues[0])) sensorValue1_data.append(int(sensorValues[1])) sensorValue2_data.append(int(sensorValues[2])) # Print the recived values (for the sake of debugging) print(f'Time:{sensorValues[0]}, Sensor 1:{sensorValues[1]}, Sensor 2:{sensorValues[2]}') # An f-string is a way to format strings in Python that allows for variable interpolation within a string. # Create a function to update the plot def update_plot(frame): read_and_process_data() plt.cla() # clear the existing plot plt.plot(x_vals, sensorValue1_data, label='Sensor 1') plt.plot(x_vals, sensorValue2_data, label='Sensor 2') plt.xlabel('Time') plt.ylabel('Sensor Values') plt.legend() # Creat a function to save data to a CSV file whem the plot window is closed def on_close(event): with open(filename,'w',newline='') as csvfile: # open a csv file in a eitable way. If the file don't exit, it will automatly crear a new one. newline='' to prevent write empty line. writer = csv.writer(csvfile) # create a CSV writer to write data into this CSV file writer.writerow(['Time','Sensor1','Sensor2']) # Writ Title row into CSV for x, s1, s2 in zip(x_vals, sensorValue1_data,sensorValue2_data): # looped the data in parallel for timestamp, sensor1 and sensor2. writer.writerow([x,s1,s2]) # Write each row to the CSV file # Register the callback funtion for when the plot window is closed fig, ax = plt.subplots() # Creates a new figure window and its corresponding axes, returning the fig figure object and ax axes object for further plotting operations. fig.canvas.mpl_connect('close_event', on_close) #Listens for the close event of the figure window. When the figure window is closed, it triggers the on_close function to handle the close event. ani = FuncAnimation(fig, update_plot,interval=10) #creates an animation object ani using the FuncAnimation class from Matplotlib. It associates this animation with the fig figure object and specifies the update_plot function to be called at each frame update with an interval of 10 milliseconds. plt.show() # displays the plot window containing the animated plot generated by the FuncAnimation, allowing the animation to be shown to the user.

void setup() { Serial.begin(115200); //setting up the connection between arduino and computer } void loop() { float time = micros() /1e6; // calculate the current time using micros and convert it to seconds for time stamping int sensorValure1 = analogRead(A0); //read the analog values from the two light sensors int sensorValure2 = analogRead(A1); delay(100); // add a short delay to ensure a reasonable sampling rate Serial.print(time); // send the data to the computer via the seral port. Print the "timestamp,sensorValure1,sensorValure2" Serial.print(", "); Serial.print(sensorValure1); Serial.print(", "); Serial.println(sensorValure2); }

where is the code?

How is that simultaneous reading? if it was simultaneous wouldnt that mean you can do both accelerate and turn on the joystick and it should chnage both graphs at the same time on the plotter. i need this because i read from a transmitter but one rc signal is for my left wheels and the other rc signal is for the right wheels. i can do both separately but not a the same time so i cant make my car go forward

appreciate it bro