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nRF51 dongle Arduino / ATmega AVR with TWI ANT

erltot

I have a few nRF51 dongles I wish to use with ANT+ for wireless mesh communication between some robots. I want to connect each to one ATmega 1284p and another Arduino Mega with ATmega 2560, both 5v chips. Can I connect them directly to the GPIO edge pins to interface with TWI or will it destroy the nRF chip?

Edit; www.nordicsemi.com/.../nRF51-Dongle

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  • 0

    If you connect the TWI (I2C) pullups to the nRF51 3V supply, that should be OK - so long as nothing on the Arduino is pulling-up to 5V...

  • 0 in reply to awneil

    Yes, I have done something similar to connect arduino and rpi before. I need to use the 3.6-5.5V input on the nRF51 Dongle for power, can I use the 3.3V edge connector for the pull-ups?

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  • 0 in reply to awneil

    Yes, I have done something similar to connect arduino and rpi before. I need to use the 3.6-5.5V input on the nRF51 Dongle for power, can I use the 3.3V edge connector for the pull-ups?

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