we are working with keypad and lcd on tinkercad with state machine and without state machine, for the project the question is to design keypad+lcd+blinker that has a blinking "*" on the first line in addition to the original keypad+lcd function. The blinker can be added using time interrupts. Thats thequestion, and i have no idea what the meaning of blinker
The requirement seems poorly worded, but one of the first things you learn is to deal with poor requirements.
In this case, I think "the blinker" is the flashing (or blinking) "*".
Blinker is any thing that " blinks" - make some thing on and off, for example a LED.
As I understand, in your work " the blinker" is repeatedly prints and clears "*" sign on the first line of display.
1. Are you using Parallel Port LCD (Fig-1) or I2C Controlled LCD (Fig-2)?
2. What is the blinking rate (ow many balink in 1 -sec) of * on the LCD. (*'s blinking rate is 1/sec means: * is On for 500 ms and then * is Off for 500 ms.)
3. Do you have physical Arduino UNO, LCD, 4x4 Keypad, Jumper Wire, and Bredboard?
Your topic does not indicate a problem with the Arduino CLI and therefore has been moved to a more suitable location on the forum.
I guess it means that after some time without activity the LCD screen is wiped and you see a blinking star at the top left of the LCD. This is likely to tell the user that the system is ready for a new command
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