Stefan-XpI just tried to attach the TLC59116 [https://hackaday.io/page/818-hmmm-what-about-an-i2c-port-led-driver-ic] to the Atmega Hearth. Unfortunately it is not working.
Not sure why. Perhapps i have to try it again with external 16MHz crystal.
Do you have Ideas why it couldn't be working?
The same sketch works at a Atmega328p...
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It could be anything - wrong pins, no pull-up resistors on SDA and SCL, wrong I2C address? Not so sure about the timing, but even if it's a wrong crystal it still should work, since it's the master? Have you tried another atmega hearth and I2C modules, just to make sure?
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I tried Pullup Resistors and 16MHz crystal. Still not working :(
I'm on Vacation after that i will try to use anoter I2C Device...
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Well... the pcf8574 works with the ATMEGA16. The TLC still refuses to work properly... it looks like it gets resets or misses some steps idk.. :-(
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