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.. _py_slide:

2.7 Toggle Left and Right
====================================

|img_slide|

The slide switch is a 3-pin device, with pin 2 (middle) being the common pin. When the switch is toggled to the left, the left two pins are connected together, and when toggled to the right, the right two pins are connected together. 


**Schematic**

|sch_slide|

GP14 will get a different level, when you toggle the slide switch to the right or left.

The purpose of the 10K resistor is to keep the GP14 low during toggling (not toggling to the far left and not toggling to the far right).

The 104 ceramic capacitor is used here to eliminate jitter.

* :ref:`cpn_slide`
* :ref:`cpn_cap`

**Wiring**

|wiring_slide|

.. 1. Connect the 3V3 pin of Pico to the positive power bus of the breadboard.
.. #. Insert the slide switch into the breadboard.
.. #. Use a jumper wire to connect one end of slide switch pin to the negative bus.
.. #. Connect the middle pin to GP14 with a jumper wire.
.. #. Use a jumper wire to connect last end of slide switch pin to the positive bus
.. #. Use a 10K resistor to connect the middle pin of the slide switch and the negative bus.
.. #. Use a 104 capacitor to connect the middle pin of the slide switch and the negative bus to realize debounce that may arise from your toggle of switch.
.. #. Connect the negative power bus of the breadboard to Pico's GND.

**Code**

.. note::

    * Open the ``2.7_slide_switch.py`` file under the path of ``euler-kit/micropython`` or copy this code into Thonny, then click "Run Current Script" or simply press F5 to run it.

    * Don't forget to click on the "MicroPython (Raspberry Pi Pico)" interpreter in the bottom right corner. 

    * For detailed tutorials, please refer to :ref:`open_run_code_py`.

.. code-block:: python

    import machine
    import utime
    button = machine.Pin(14, machine.Pin.IN)
    while True:
        if button.value() == 0:
            print("The switch works!")
            utime.sleep(1)


After the program runs, when you toggle the slide switch to the right, "The switch works!" will appear in the shell.