Which MicroPython libraries should I use for ECG with ESP32?

Hello everyone, I'm trying to make ECG using esp32 with micropython, I need help to find the libraries to use in code.

18 Replies

Hi, you can use the machine library for hardware interaction and time for delays.and you can save and plot the data by matplotlib, do you have something specific you want to do!?

Razali Abdelrahmen•5mo ago

Only those txo librairies?, also, Can I use AI to analyse data ?, I mean I want to make GUI with tkinter and add button analyze which takes the data and makes analysis of the patient .

wafa_ath•5mo ago

Those are basic libraries, For AI analysis use Python on your computer. Save the ECG data from the ESP32 and transfer it to your computer. Because micropython is not that strong for ai tasks

Razali Abdelrahmen•5mo ago

Ok thank you so much, If I find problems can I ask you again ?,sorry it's my first project.

wafa_ath•5mo ago

Absolutely, you can ask in any time, you are very welcome

Razali Abdelrahmen•5mo ago

Hi again, I wanna plot a list of data that contains the values of ECG, thony of micropython doesn't know the library matplotlib.pyplot, what should I do ?, can I plot it in spyder ? If yes how I can do it ?, thank you

Dtynin•5mo ago

@Razali Abdelrahmen I don't think thonny support standard Python libraries like matplotlib.

Dtynin•5mo ago

using Spyder would be better for plotting your ECG data.. and Yes you can use Spyder

melta101•5mo ago

how are you going to showcase the plot?

melta101•5mo ago

On your device or somewhere else? OLED, LCD, etc.. Cant imagine matplotlib to run on those...

Dtynin•5mo ago

@Razali Abdelrahmen you can import the library matplotlib.pyplot as plt then use plt.plot(data)...hope this helps??

melta101•5mo ago

I have a doubt, How does matplotLib get to know which display is used, As we are not passing any display object info to Matplotlib

Razali Abdelrahmen•5mo ago

I wanna plot the graph of an ECG on pc

Razali Abdelrahmen•5mo ago

This message is printed : no module named matplotlib

Razali Abdelrahmen•5mo ago

But my data is on thony, how can I plot it in spyder ?

Enthernet Code•5mo ago

Thonny is not suitable for matplotlib based plotting, Spyder is a good alternative where you can easily plot your ECG data using matplotlib. You can manually transfer your ECG data to Spyder or load it from a file and then use matplotlib to create the plots. If you're plotting your ecg data directly from a list

import matplotlib.pyplot as plt

ecg_data = [100, 120, 130, 110, 115, 140, 150, 130, 125, 135, 120, 110]

plt.figure(figsize=(10, 5))
plt.plot(ecg_data, marker='o', linestyle='-', color='b', label='ECG Signal')
plt.title('ECG Data Visualization')
plt.xlabel('Time (s)')
plt.ylabel('Amplitude (mV)')
plt.grid(True)
plt.legend()
plt.show()

import matplotlib.pyplot as plt

ecg_data = [100, 120, 130, 110, 115, 140, 150, 130, 125, 135, 120, 110]

plt.figure(figsize=(10, 5))
plt.plot(ecg_data, marker='o', linestyle='-', color='b', label='ECG Signal')
plt.title('ECG Data Visualization')
plt.xlabel('Time (s)')
plt.ylabel('Amplitude (mV)')
plt.grid(True)
plt.legend()
plt.show()

If you're using a csv file

import matplotlib.pyplot as plt
import csv

ecg_data = []
with open('ecg_data.csv', 'r') as file:
    reader = csv.reader(file)
    for row in reader:
        ecg_data.append(float(row[0]))

plt.figure(figsize=(10, 5))
plt.plot(ecg_data, marker='o', linestyle='-', color='g', label='ECG Signal')
plt.title('ECG Data Visualization')
plt.xlabel('Time (s)')
plt.ylabel('Amplitude (mV)')
plt.grid(True)
plt.legend()
plt.show()

import matplotlib.pyplot as plt
import csv

ecg_data = []
with open('ecg_data.csv', 'r') as file:
    reader = csv.reader(file)
    for row in reader:
        ecg_data.append(float(row[0]))

plt.figure(figsize=(10, 5))
plt.plot(ecg_data, marker='o', linestyle='-', color='g', label='ECG Signal')
plt.title('ECG Data Visualization')
plt.xlabel('Time (s)')
plt.ylabel('Amplitude (mV)')
plt.grid(True)
plt.legend()
plt.show()

Hope this helps

melta101•5mo ago

Then i have a way, you can use serial port to transfer data from micropython to your desktop then on PC, use python, pyserial to read data, and plot normally

wafa_ath•5mo ago

Hey @Razali Abdelrahmen first In Thonny Save your ECG data to a file then open and plot it in Spyder using matplotlib it's that easy 😁

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Which MicroPython libraries should I use for ECG with ESP32?