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You can use delay() or write code to check millis() between calling nd_now(), Of keys you want pressed (and zero for the ones you want not pressed), and then

To micro manage the keyboard, you use functions to set which combination The USB keyboard can have up to 6 normal keys and 4 modifier keys pressed at the You are very directly controlling the actual key codes without any extra software The media and system keys are not supported. Represent the location of a key on the USA English keyboard layout. Only key codes may be used with the Micro Manager functions. Used by the USB communication sent to your PC. The "Micro Manager Way" allows you to exactly control the 6 possible key slots Normally Keyboard.press(key) and Keyboard.release(key) are sufficient, but The micro manager way requires more effort but gives you complete control. Here is a very simple example, using Keyboard.print(). With all the same control as Serial.print(). You can print strings, numbers, single characters Keyboard.print() works the same way as Serial.print(), except the message There are two ways you can make your Teensy send USB keystrokes. Which your computer will recognize as coming from a standard USB keyboard. When you select "USB Keyboard" from the Tools -> USB Type menu, the Teensyīecomes a USB keyboard and mouse while running your program. Unexpected keystrokes can quickly ruin your program.