KeyboardEmulator

Keyboard Emulator in CircuitPython

Connect D2 to GND to activate Keyboard

Acts as Keyboard:

No Keyboard output:

code for the keyboard emulator

  1 #"""based on CircuitPython Essentials HID Keyboard example"""
  2 
  3 # IF you connect D2 and GND it acts as keyboard
  4 
  5 import time
  6 import board
  7 import digitalio
  8 from digitalio import DigitalInOut, Direction, Pull
  9 import usb_hid
 10 from adafruit_hid.keyboard import Keyboard
 11 from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
 12 from adafruit_hid.keycode import Keycode
 13 from adafruit_lsm6ds.lsm6dsox import LSM6DSOX
 14 
 15 i2c = board.I2C()  # uses board.SCL and board.SDA
 16 # i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
 17 sensor = LSM6DSOX(i2c)
 18 
 19 led = digitalio.DigitalInOut(board.LED)
 20 led.direction = digitalio.Direction.OUTPUT
 21 
 22 switch = DigitalInOut(board.D2)
 23 switch.direction = Direction.INPUT
 24 switch.pull = Pull.UP
 25 
 26 def sensorRead():
 27         a=(sensor.acceleration)
 28         g=(sensor.gyro)
 29         return (a+g)
 30 
 31 # The keyboard object!
 32 time.sleep(1)  # Sleep for a bit to avoid a race condition on some systems
 33 keyboard = Keyboard(usb_hid.devices)
 34 keyboard_layout = KeyboardLayoutUS(keyboard)  # We're in the US :)
 35 
 36 
 37 while True:
 38     readings = []
 39     
 40     for _ in range(100):
 41         reading = sensorRead()
 42         readings.append(reading)
 43         time.sleep(0.02)  # Sleep for 100 milliseconds
 44     
 45     sum_absolute_differences = [0] * 6
 46 
 47     for i in range(1, len(readings)):
 48         for j in range(6):  # Assuming each reading has 6 components
 49             sum_absolute_differences[j] += abs(readings[i][j] - readings[i-1][j])
 50     
 51     x = sum(sum_absolute_differences)
 52     print(x)
 53     
 54     #for i, reading in enumerate(readings):
 55         #print(f"Reading {i+1}: {reading}")
 56     
 57     if switch.value:
 58         led.value = False
 59         write2keyboard = False
 60         #print("Off")
 61     else:
 62         led.value = True
 63         write2keyboard = True
 64         #print("On")
 65 
 66     #if write2keyboard: 
 67     #    keyboard.press(Keycode.SHIFT, Keycode.A)
 68     #    keyboard.press(Keycode.ENTER)
 69 
 70     if 0 <= x <= 20:
 71         print("nothing")
 72     elif 20 < x <= 180:
 73         print("nice, I like this\n")
 74         if write2keyboard:
 75             keyboard_layout.write("nice, I like this\n")
 76     elif 180 < x <= 300:
 77         print("are you careful?")
 78         if write2keyboard:
 79             keyboard_layout.write("are zou careful_\n")
 80     elif 300 < x <= 400:
 81         print("be careful with me!")
 82         if write2keyboard:
 83             keyboard_layout.write("be careful with me!\n")
 84     elif 400 < x <= 600:
 85         print("no this is not nice!")
 86         if write2keyboard:
 87             keyboard_layout.write("no this is not nice!\n")
 88     elif 600 < x <= 800:
 89         print("this hurts!!!")
 90         if write2keyboard:
 91             keyboard_layout.write("this hurts!!!\n")
 92     elif x > 800:
 93         print("you are killing me")
 94         if write2keyboard:
 95             keyboard_layout.write("zou are killing me\n")
 96     else:
 97         print("Value out of range")
 98         
 99     if write2keyboard:
100             time.sleep(1)
101     time.sleep(1)