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RPI
input
MISC
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RPI
https://www.raspberrypi.org/documentation/hardware/raspberrypi/gpio/README.md
https://raspberrypi.stackexchange.com/questions/9298/what-is-the-maximum-current-the-gpio-pins-can-output#
50 mA.
https://elinux.org/RPi_Low-level_peripherals#Internal_Pull-Ups_.26_Pull-Downs
http://www.raspberrypi.org/documentation/usage/gpio/
http://makezine.com/projects/tutorial-raspberry-pi-gpio-pins-and-python/#
RpI
https://electronics.stackexchange.com/questions/7423/what-is-a-pull-up-and-pull-down#
http://razzpisampler.oreilly.com/ch07.html#
PullUp
are connected to Ground
input
https://www.raspberrypi.org/forums/viewtopic.php?t=46525#
50kΩ pull up/down resistors
The pins can only source or sink 16mA so limiting the current to that level (with at least 220 ohms) makes sense.
MISC
http://www.sonelec-musique.com/electronique_theorie_led.html
http://visualgdb.com/tutorials/raspberry/LED/
https://vimeo.com/153263103#connected-tizen-20160131rzr#
https://github.com/mozilla-iot/wiki/wiki/Configuring-GPIO-for-use-with-the-gpio-adapter#
IoT
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RemoteControl
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gpio.txt · Last modified: 2022/04/16 12:23 (external edit)
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