BTscope - Arduino oscilloscope

Free app for making a simple Bluetooth oscilloscope with Arduino and HC-05. This simple oscilloscope can be used, for example, in auto electronics to test sensors and other places where high speed isn't needed.

oscilloscope app, oscilloscope for android, Arduino simulator, Arduino bluetooth

```cpp

// Arduino Nano example with and HC-05:

// Pinout:

// VCC --> Vin

// TXD --> pin 10

// RXD --> pin 11

// GND --> GND

#include "SoftwareSerial.h"

SoftwareSerial BTSerial(10, 11); // RX | TX

int val = 0; // variable to store the read value

int analogPin = A7; // potentiometer wiper (middle terminal) connected to analog pin 3

void setup() {

BTSerial.begin(9600); // HC-05 default speed in AT command mode

}

void loop() {

static unsigned long previousMillis = 0;

const unsigned long interval = 30; // Set your desired interval in milliseconds

unsigned long currentMillis = millis();

if (currentMillis - previousMillis >= interval) {

previousMillis = currentMillis;

// Your code to read and send data over Bluetooth

val = analogRead(analogPin);

BTSerial.println(val);

}

// Your other non-blocking tasks can go here

// ...

// Avoid using delay() to keep the loop responsive

}