MeARM_RaspberryPI

Control The MeARM using a RaspberryPi 3B/3B+ using Python (Tkinter)

The MEArm has 4 micro servo motors(sg90)

They are being controlled by Pulse Width Modulation(PWM)

The pinout in the Raspberry Pi is in BCM mode

The current version is already configured for the diagram attached

Setup & Instructions

Step 1:

Display:

If you have an LCD display, make sure you have the drivers installed from this repository

https://github.com/goodtft/LCD-show.git

No Display:

For Linux Client:

No Configurtion required...Its already pre-configured

For Windows Client:

Download a Xserver like Xming or X410: Xming:

https://sourceforge.net/projects/xming/

X410: Download from Windows Store!!

https://www.microsoft.com/en-us/p/x410/9nlp712zmn9q?activetab=pivot:overviewtab

On the Client side:

Step 1: Run the Xserver program

Step 2: Open cmd (Start -> type "cmd" -> Hit Enter/Return Key

Step 3:

ipconfig

Find the IP address of your current Wireless Device...(Say XX.XX.XX.XX)

On the Raspberry Pi (Server side):

Note: Your might require a monitor/xrdp/Teamviewer Session

Step 1: Open a Terminal window

Step 2: Set the Display variable to forward the Interface to the Client(Laptop/Desktop you are currently working on)

DISPLAY=XX.XX.XX.XX:0
export DISPLAY

Step 3: Clone this git repository, cd(change directory into it, and run the python file

git clone https://github.com/1412kauti/MeARM_RaspberryPI.git
cd MeARM_RaspberryPI
python servo.py

Step 2:

You are now presented by a small window on the left corner of your Client's Display

Enjoy !!

Step N:

The GUI is highy modular, For instances of more than 4 motors, all you have to do is add a another variable like

app5 = App(root, <pin_no>)

after the "Servo Control" part. Add the new variable app5 = App(root, 5) ONLY AT THE END. also change the root.geometry() part, where the second dimension has to be incremented(increased)/decremented(decreased) as per the increase/decrease of the number of Slider in your setup. an example is as follows:

This is for a 5 motor setup

root = Tk()

root.wm_title('Servo Control')
app = App(root,6)
app2 = App(root,13)
app3 = App(root, 19)
app4 = App(root, 26)
app5 = App(root, 5)
root.geometry("200x220+0+0")
root.mainloop()

Happy Robotics People !!