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Κανένα προϊόν στο καλάθι σας.
The 4×4 matrix keypad usually is used as input in a project.
It has 16 keys in total, which means the same input values.
The keys of each row and column are connected through the pins outside – pin Y1-Y4 as labeled beside control the rows, when X1-X4, the columns.
1. With the ULN2003A motor driving chip
2. all pins of the chip have been led out to make connection easy
3. with pins of 5-12V power supply
4. with 4 signal indicator
5. with XH-5P socket directly connected with the 28BYJ-48 model stepper motor
6. PCB board size: 40.5 (mm) x21.3 (mm)