Most guides for how to program your garage door keypad are super confusing! I tried to make a coherent one. If you thought ...
According to the Staff Memo taped to the window of the Nurses' Station (above), you aren't going to find the keycode to its door simply written down somewhere in the hospital. This is technically ...
The I2CKeyPad library implements the reading of a 4x4 keypad by means of a PCF8574. Smaller keypads, meaning less columns or rows (4x3) can be read with it too. Since 0.3.2 the library allows a 5x3, ...
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