This is a modified DigiUSB (V-USB) library that provides digispark to use DigiMouse/DigiKeyboard/DigiJoystick with SoftSerial (SoftwareSerial) library at same time. It allows, for example, using a Bluetooth module to control the mouse or keyboard.

Also, there is a shield (Eagle files) for the digispark to connect typical bluetooth breakout boards.

If you want a much better solution than this, check this: https://github.com/J-Rios/Digispark_SoftSerial-INT0

How to install:

• Copy the digistump folder inside .../Arduino-X.X.X/hardware (Overwrite the folder if it exists).

How to use:

• Connect P2 pin to P3 pin (otherwise you will get: "USB device not recognized").
• Use the P0 for RX pin and P1 for TX pin of the Software serial library (PWM pins).

Example:

#include <TinyPinChange.h>
#include <SoftSerial.h>
#include <DigiMouse.h>

#define P_RX 0
#define P_TX 1

char a, s, d;
int x, y, c;

SoftSerial BLE(P_RX, P_TX);

void setup()
{
    x = 0;
    y = 0;
    c = 0;
    BLE.begin(9600);
    DigiMouse.begin();
}

void loop()
{
    if(BLE.available() >= 3)
    {
        a = BLE.read();
        s = BLE.read();
        d = BLE.read();
        
        mouse_action(a, s, d); // Determine x, y and c for move the mouse
    }
    DigiMouse.move(x, y, c);
    DigiMouse.update();
}