2013年1月19日 · I have come across many simple circuits that show how to switch on an LED or something else. Pull up resistors are often mentioned. What do they do? Some GPIO pins …

2024年8月17日 · While using the gpiod library, I found that it doesn’t support internal pull up/down resistors, nor pwm. Although I could just use external pull up resistors, it would be a lot more …

2013年12月7日 · The short answer is yes. The pull up resistor ensures a valid logic level when the pins are switching from input to output, you won't melt anything but it may not function …

2024年8月12日 · Recently I've been exploring pull up resistors. I’m wondering how I can initiate internal pull up resistors via the kernel as it is a lot simpler than making pull up resistor hardware.

2019年1月27日 · But I can not find how to active/desactivate the internal pull-up or pull-down resistors. I searched into the Python library, and found the place where the magic happens.

2017年3月26日 · So question is: Does all Raspberrys GPIO have a internal pull-up/pull-down resistor which can be enabled from program, in my case Java language with PiJ4? I have …

2017年4月29日 · A fresh install of raspbian has fixed the issue, whatever I tinkered with yesterday must of activated the pull up resistors.

2016年6月15日 · On the other hand, I got one of those RTC and they got two 222Ohm pull up resistor on board. My questions are: First, why the would put a pull up resistor if the …

Note: When I say 'pull up resistor' I meant either a physical external resistor or the internal pull-up resistor, configured in code.

2019年10月6日 · I can't seem to set the pull-up resistor mode on the PI4 with most methods I try. I have tried: C# (the new System.Device.Gpio interface), WiringPi (using a C# abstraction), and …