This guide assumes you already have CircuitPython installed on your Trinkey. The Trinkey ships with CircuitPython pre-installed, so if you have put Arduino on it or need to re-install CircuitPython, check out this guide.
This project only uses built-in libraries, so all you have to do is plug your Trinkey into your computer, click Download Project Bundle below and unzip it.
This code will not work on Gemma M0, Trinket M0 or Feather M0 non-Express as the function time.monotonic_ns() is not available for those boards. If you get that or a message on No long integer support, please post to https://forums.adafruit.com/
Now, copy code.py and duckyscript.txt over to your Trinkey and you should be all set.
You can use the script included in the project bundle which can be used to enroll a Chromebook, or you can make your own. You can find the syntax and available commands and a bunch of example scripts in the wiki.
# SPDX-FileCopyrightText: Copyright (c) 2021 Eva Herrada for Adafruit Industries
#
# SPDX-License-Identifier: Unlicense
import time
import usb_hid
from adafruit_hid.keyboard import Keyboard
from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
import adafruit_ducky
import touchio # pylint: disable=unused-import
import board
import neopixel
from digitalio import DigitalInOut, Pull # pylint: disable=unused-import
# Uncomment for Neo Trinkey
touch1 = touchio.TouchIn(board.TOUCH1)
touch2 = touchio.TouchIn(board.TOUCH2)
# Uncomment for NeoKey Trinkey
#button = DigitalInOut(board.SWITCH)
#button.switch_to_input(pull=Pull.DOWN)
#button_state = False
pixels = neopixel.NeoPixel(board.NEOPIXEL, 4)
pixels.fill((0xFFFFFF))
time.sleep(1) # Sleep for a bit to avoid a race condition on some systems
keyboard = Keyboard(usb_hid.devices)
keyboard_layout = KeyboardLayoutUS(keyboard) # We're in the US :)
duck = adafruit_ducky.Ducky("duckyscript.txt", keyboard, keyboard_layout)
result = True
running = False
while result is not False:
#if button.value: # Uncomment for NeoKey Trinkey
if any([touch1.value, touch2.value]): # Uncomment for Neo Trinkey
running = not running
if running:
pixels.fill((0x00FF00))
else:
pixels.fill((0xFF0000))
time.sleep(0.2)
if running:
result = duck.loop()
Usage
To use this device, simply plug it into the target computer and press the key switch. You can find a number of other scripts and attacks here:
Non-US Keyboard Layouts
A library of non-US keyboard layouts is available if you want to adapt this for other keyboards.
First, the code imports the required libraries.
import time import usb_hid from adafruit_hid.keyboard import Keyboard from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS import adafruit_ducky import touchio # pylint: disable=unused-import import board import neopixel from digitalio import DigitalInOut, Pull # pylint: disable=unused-import
The code next sets up the buttons used to control the script and the NeoPixels used to indicate the status of the script.
# Uncomment for Neo Trinkey touch1 = touchio.TouchIn(board.TOUCH1) touch2 = touchio.TouchIn(board.TOUCH2) # Uncomment for NeoKey Trinkey #button = DigitalInOut(board.SWITCH) #button.switch_to_input(pull=Pull.DOWN) #button_state = False pixels = neopixel.NeoPixel(board.NEOPIXEL, 4) pixels.fill((0xFFFFFF))
Then, the code sets up the objects required to emulate a keyboard.
time.sleep(1) # Sleep for a bit to avoid a race condition on some systems keyboard = Keyboard(usb_hid.devices) keyboard_layout = KeyboardLayoutUS(keyboard) # We're in the US :)
Before the ducky script is run, the code needs to initialize the object it will use to send the keystrokes in the script.
duck = adafruit_ducky.Ducky("duckyscript.txt", keyboard, keyboard_layout)
Finally, the code runs the script. It checks if the control button has been pressed and if it has, it runs the loop. If the button is pressed again, the script is paused.
while result is not False:
#if button.value: # Uncomment for NeoKey Trinkey
if any([touch1.value, touch2.value]): # Uncomment for Neo Trinkey
running = not running
if running:
pixels.fill((0x00FF00))
else:
pixels.fill((0xFF0000))
time.sleep(0.2)
if running:
result = duck.loop()
Page last edited January 21, 2025
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