Editing Tasks WiSe2021 (section)

== Resources ==

=== Pinout of Pi Zero ===
physical connections
<br/> JL: https://peppe8o.com/raspberry-pi-zero-pinout/
<br/> CR: https://de.pinout.xyz/pinout/io_pi_zero
<br/> HW: https://www.argon40.com/learn/index.php/2020/03/06/a-comprehensive-guide-on-raspberry-pi-3-and-raspberry-pi-zero-and-zero-w-gpio-pinout/
<br/> JW: https://www.raspberrypi.org/documentation/usage/gpio/

<br/> SF: With the gpiozero library you will by default want to reference the pin number as in GPIOx where x is the pin you define in software. Example: LED(5) in software; connect to GPIO5 on the Pi Zero header. (see also: https://gpiozero.readthedocs.io/en/stable/recipes.html#pin-numbering)

=== Setting up the OS and Python ===
NOOBS
configure
<br/> JL: https://www.tutorialspoint.com/python/python_environment.htm
<br/> CR: https://learn.adafruit.com/setting-up-a-raspberry-pi-with-noobs/download-noobs
<br/> HW: https://www.raspberrypi.org/help/noobs-setup./
<br/> JW: https://www.raspberrypi.org/documentation/installation/noobs.md
<br/> SG: https://medium.com/@nikosmouroutis/how-to-use-atom-with-your-raspberry-pi-through-sftp-382c43176a9e

<br/> SF: The simple three-step wizard we talked about: https://www.raspberrypi.org/software/

=== Access to GPIO ===
JL: http://codefoster.com/pi-basicgpio/
<br/> CR: https://fedoramagazine.org/raspberry-pi-zero-gpio-fedora/
<br/> HW: https://webnist.de/raspberry-pi-zero-gpio-pins-ueber-den-desktop-steuern/
<br/> SG: https://github.com/fivdi/onoff

<br/> SF: With the gpiozero library you will by default want to reference the pin number as in GPIOx where x is the pin you define in software. Example: LED(5) in software; connect to GPIO5 on the Pi Zero header. (see also: https://gpiozero.readthedocs.io/en/stable/recipes.html#pin-numbering)

=== Blinking an LED ===
JL: https://raspberrypihq.com/making-a-led-blink-using-the-raspberry-pi-and-python/
<br/> CR: https://fedoramagazine.org/raspberry-pi-zero-gpio-fedora/
<br/> HW: https://webnist.de/raspberry-pi-zero-gpio-pins-ueber-den-desktop-steuern/
<br/> JW: http://www.heidislab.com/tutorials/getting-started-with-raspberry-pi-led-blinking-on-raspberry-pi-zero

=== Reading a Pin ===
JL: http://raspberry.io/projects/view/reading-and-writing-from-gpio-ports-from-python/
<br/> CR: https://learn.sparkfun.com/tutorials/raspberry-gpio/all
<br/> HW: https://mjrobot.org/rpi-gpiozero/
<br/> SG: https://tutorials-raspberrypi.de/raspberry-pi-gpio-erklaerung-beginner-programmierung-lernen/

<br/> SF: What state does your input pin have by default? With gpiozero, you can configure the pin to be pulled up (pull_up=True) or pulled low (pull_up=False). If you pull up, you can only change the state by connecting the pin physically to GND. If pulled low, you can only change the input state by connecting it to 3.3V. (see also: https://gpiozero.readthedocs.io/en/stable/api_input.html). By default, the pin is pulled up. If you always define the state explicitly in your code, you might make it easier for yourself to debug the code. Example: Button(15, pull_up=True)

=== Runing a Webserver that access GPIO ===
JL: https://towardsdatascience.com/python-webserver-with-flask-and-raspberry-pi-398423cc6f5d
<br/> CR: https://www.e-tinkers.com/2018/04/how-to-control-raspberry-pi-gpio-via-http-web-server/
<br/> HW: https://hackaday.io/project/173322-controlling-gpio-outputs-using-a-web-interface-wit
<br/> JW: https://www.youtube.com/watch?v=c6FOpPXbLjs
<br/> SG: https://randomnerdtutorials.com/raspberry-pi-web-server-using-flask-to-control-gpios/

=== Restful API ===
JL: https://sites.google.com/site/cartwrightraspberrypiprojects/home/other-projects/rest-api
<br/> CR: https://docs.dataplicity.com/docs/control-gpios-using-rest-api
<br/> HW: https://www.youtube.com/watch?v=JZfevVG-VuA&list=PLLIDdNg0t5ceg3mI3vn0YJocJ4ndMtM98&index=4&t=0s
<br/> SG: https://tutorials-raspberrypi.de/raspberry-pi-nodejs-webserver-installieren-gpios-steuern/

=== Description of the components ===
JL: https://www.adafruit.com/product/3411
<br/> CR: https://computer.howstuffworks.com/raspberry-pi2.htm
<br/> HW: https://learn.adafruit.com/introducing-the-raspberry-pi-zero
<br/> JW: https://www.youtube.com/watch?v=WJdQ4rknBX0