> GPIO Zero supports a number of different pin implementations (low-level pin libraries which deal with the GPIO pins directly). By default, the RPi.GPIO library is used (assuming it is installed on your system), but you can optionally specify one to use. For more information, see the API - Pins documentation page.
> One of the pin libraries supported, pigpio, provides the ability to control GPIO pins remotely over the network, which means you can use GPIO Zero to control devices connected to a Raspberry Pi on the network. You can do this from another Raspberry Pi, or even from a PC.
Presumably, e.g. TLS to secure that control channel is your responsibility.
> TTL serial refers to single-ended serial communication using raw transistor voltage levels: "low" for 0 and "high" for 1. [31] UART over TTL serial is a common debug interface for embedded devices.
Found this:
"Ryanteck RTk.GPIO (PC GPIO Interface)" https://uk.pi-supply.com/products/ryanteck-rtk-gpio-pc-gpio-...
gpiozero > Remote GPIO: https://gpiozero.readthedocs.io/en/stable/remote_gpio.html :
> GPIO Zero supports a number of different pin implementations (low-level pin libraries which deal with the GPIO pins directly). By default, the RPi.GPIO library is used (assuming it is installed on your system), but you can optionally specify one to use. For more information, see the API - Pins documentation page.
> One of the pin libraries supported, pigpio, provides the ability to control GPIO pins remotely over the network, which means you can use GPIO Zero to control devices connected to a Raspberry Pi on the network. You can do this from another Raspberry Pi, or even from a PC.
Presumably, e.g. TLS to secure that control channel is your responsibility.
Parallel ports > Pinouts: https://en.wikipedia.org/wiki/Parallel_port#Pinouts
"The parallel port" (2023) https://news.ycombinator.com/item?id=34585216
Serial port: https://en.wikipedia.org/wiki/Serial_port
UART: Universal asynchronous receiver-transmitter:
Serial TTL: https://en.wikipedia.org/wiki/Transistor%E2%80%93transistor_... :
> TTL serial refers to single-ended serial communication using raw transistor voltage levels: "low" for 0 and "high" for 1. [31] UART over TTL serial is a common debug interface for embedded devices.
"Possible to use a 9 Pin Serial port as "GPIO" using ioctl()?" https://stackoverflow.com/questions/27789099/possible-to-use...
D-subminiature > Typical applications > Communications ports: https://en.wikipedia.org/wiki/D-subminiature#Communications_...
Crosstalk: https://en.wikipedia.org/wiki/Crosstalk
"Can you hotwire this computer to transmit a tone through the radio?" https://www.getyarn.io/yarn-clip/aac07d77-c6d6-4da7-bdd3-b93... https://en.wikipedia.org/wiki/Air-gap_malware