What's needed to talk over I2C with a 5v device from the pi?
I think I want a level shifter, but I'm not sure about how to do that with bidirectional multiplayer lines like I2C.
Thanks for any help!
PS - The 5v I2C device I'm working with is the HT16K33 breakout, product 1427.
5v I2C device w/Raspberry Pi?
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- adafruit_support_mike
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Re: 5v I2C device w/Raspberry Pi?
This breakout solves that problem: https://www.adafruit.com/products/757
If you want to roll your own, there are links to a couple of App Notes from Phillips/NXP (who officially own I2C) linked from the product page.
If you want to roll your own, there are links to a couple of App Notes from Phillips/NXP (who officially own I2C) linked from the product page.
- dmmps
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- Joined: Wed Jun 18, 2014 3:30 pm
Re: 5v I2C device w/Raspberry Pi?
Thanks so much! That should be perfect. I'll pick up a couple and see how it goes.
I did see something potentially workable in a competitor's shop, based on a PCA9306 chip, but for twice the price. Yay fruit!
I did see something potentially workable in a competitor's shop, based on a PCA9306 chip, but for twice the price. Yay fruit!
Forum rules
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/