![]() ![]() Launch IDLE IDE by typing the following command.Circuit diagram button press Python Programming Pull Down tup(port_or_pin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) Pull Up tup(port_or_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP) Circuit DiagramĬonnect the push button switch to 6 (ground) and 12 (GPIO). ![]() You should use following commands to configure it. Pull up resistors have a value between 50KΩ ~ 65KΩ and pull down resistors between 50KΩ ~ 60KΩ. The GPIO ports consist of software configurable internal pull up and pull down resistors. Pull resistors can avoid such discrepancies and provide a smooth operation. Any wire connected to that pin can act as an antenna and can build up stray voltages. If no pull resistor is added to an input pin, it remains floating. Pull up resistors give a default HIGH state to input pin while pull down resistors a default LOW state. ![]() Alternately external pull up and pull down resistors may also be used. Raspberry Pi has internal Pull Up and Pull Down resistors which can be enabled through software. Raspberry Pi GPIO Pin Out Raspberry Pi GPIO layout Pull Up and Pull Down I hope that you already installed Python GPIO Library in your Raspberry Pi, if not please follow our first tutorial LED Blinking using Raspberry Pi. Here we using Python programming language. Detecting switch status is one of the basic step in learning Raspberry Pi GPIO operations. I hope that you already go through our tutorial, LED Blinking using Raspberry Pi. ![]()
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