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by consp 712 days ago
On the note of testing I2C devices: hook them up to any VGA or HDMI port and you are good to go with a complete OS. I even have some sensors running that way on my server for domotica needs.
1 comments
tarasglek 712 days ago
I don't get it. How does one use vga or HDMI to hook up i2c?
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nom 712 days ago
You literally just hook a device up to pin 15/16 on an HDMI port.

https://mitxela.com/projects/ddc-oled

DDC is how your OS reads the list of supported resolutions from your display and is present on VGA ports as well. It's just a low speed i2c bus and can be used for other things :)

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tarasglek 711 days ago
That's so cool. I just recently saw a more recent impl of this: copying fb over spi on rpi. This approach is much more clever and equally useless
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