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#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup(){
    ofLogToFile("log.txt", true);
}

//--------------------------------------------------------------
void ofApp::update(){

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const int buttonPin = 2;     // the number of the pushbutton pin

// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status

void setup() {
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);

  // Setup serial

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arp -na | grep -i b8:27:eb

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Install OpenCV 4.1.2 on Raspbian Buster

$ chmod +x *.sh
$ ./download-opencv.sh
$ ./install-deps.sh
$ ./build-opencv.sh
$ cd ~/opencv/opencv-4.1.2/build
$ sudo make install