Jasmeeet Singh

Hello TimothyP31! First of all I apologise for the late response. After some debugging I guess this is the reason for the error you are getting:When the blob reaches inside the range of the starting point the tracing begins as the flag variable is set to 1. Then in the next iteration of the loop again the keypoints are detected and stored in the 'points_array' numpy array. After this the program encounters the following lines:if flag == 1:# Get coordinates of the center of blob from keypoints and append them in points listpoints.append(points_array[0]) # Draw the path by drawing lines between 2 consecutive points in points list for i in range(1, len(points)): cv2.line(frame_with_keypoints, tuple(points[i-1]), tuple(points[i]), (255, 255, 0), 3)This is where I guess the error …

Hello TimothyP31! First of all I apologise for the late response. After some debugging I guess this is the reason for the error you are getting:When the blob reaches inside the range of the starting point the tracing begins as the flag variable is set to 1. Then in the next iteration of the loop again the keypoints are detected and stored in the 'points_array' numpy array. After this the program encounters the following lines:if flag == 1:# Get coordinates of the center of blob from keypoints and append them in points listpoints.append(points_array[0]) # Draw the path by drawing lines between 2 consecutive points in points list for i in range(1, len(points)): cv2.line(frame_with_keypoints, tuple(points[i-1]), tuple(points[i]), (255, 255, 0), 3)This is where I guess the error occurs because as the flag is 1 'flag==1' condition returns true and the program enters inside the if statement. It then tries to append the element at index 0 of points_array. But there is no kind of if statement here to check if the 'points_array' is empty or not. So if after the tracing begins and the blob gets undetected for some reason, the 'points_array' remains empty but the line inside the if statement: 'points.append(points_array[0])' still asks the program to append the element at 0 index of 'points_array' into points list. Since there is no element at that index it results in the 'tuple index out of range' error.As a solution I guess you should shift the statements inside 'if' on line 104 to the 'if' on line 114:if len(points_array) != 0:Do tell if this solution works out or if you have any further doubts. Good Luck!

Thank You!

Yes you can. You can build the whole circuit on a breadboard. The main reason for building this on a perf board was so that it could be placed inside a small box. But if that doesn't matter for you, you could build the project on a breadboard which won't require any soldering.

Thank you! :)

Thank you! :)

Thank you!

Thank you! :)

Glad you liked it!!