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  • Author Author: kk99
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Prank with HID device emulated by Raspberry Pi Pico

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The main idea was to use the Raspberry Pi Pico to emulate the keyboard and mouse to send random keys. I have used CircuitPython with additional usage of adafruit hid library. Below there is source code:

import random
import usb_hid
import time
from adafruit_hid.consumer_control import ConsumerControl
from adafruit_hid.consumer_control_code import ConsumerControlCode
from adafruit_hid.keyboard import Keyboard
from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
from adafruit_hid.mouse import Mouse

kbd = Keyboard(usb_hid.devices)
layout = KeyboardLayoutUS(kbd)
m = Mouse(usb_hid.devices)
cc = ConsumerControl(usb_hid.devices)

while True:
    for x in range(random.randrange(15, 50)):
        kbd.send(random.randrange(32, 127))

    m.click(Mouse.RIGHT_BUTTON)
    for x in range(random.randrange(5, 25)):
        m.move(random.randrange(-100, 100), random.randrange(-100, 100), random.randrange(-1,1))

    cc.send(ConsumerControlCode.VOLUME_INCREMENT)
    time.sleep(random.randrange(5,30))

At the beginning there is initialization of keyboard and mouse devices. In main loop at the first stage there are sent few random key press. Then there is sent right mouse button click and few moves of mouse in to random position. At the end there is increasing of system volume and waiting at random delay to next loop. Of course it is easy to find due that the device is present and listed in system as mass storage device. Below there is short video where random keys or moves are send by Raspberry Pi Pico:

 

In similar way we could prank users of remote driven devices e.g. TV. In that case is required to use of IR diode connected to RPI Pico and send random key codes in one of popular standard for remote device e.g. RC-5.