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A comment on Reverse Engineering All the Raspberry Pis. Parent comment

Re:Reverse Engineering All the Raspberry Pis by kees99 on Wednesday August 27, 2025 @11:54PM (#45048203)
> not offering (...) GPIO/I2C/SPI/Serial

Nearly every "old PC" does offer built-in easily accessible I2C - as "DDC channel" of a monitor plug - VGA, DVI, HDMI, DisplayPort - all have it. Linux exposes those as regular /dev/i2c-*, so any I2C software that works on a RPi or other Linux SBC, will run with those too:

https://web.archive.org/web/20120903090802/http://www.painty...

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Re:Reverse Engineering All the Raspberry Pis by jki275 on Thursday August 28, 2025 @12:08AM (#45048289)
Also there are usb devices that can run gpio/spi/i2c/uart for a few bucks.
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