- Fri Mar 21, 2008 9:38 am
#45125
Hello everyone!
I need to connect my arduino to a 3.3V RF device (nordic nRF2401 to be exact). I read the interfacing 3.3V tutorial but I am still confused with one of the pin's that require input and output. The data1 pin needs to be both (on startup for configuration and then for data retrieval). If I use a diode and a pull up resistor when the data1 pin goes low on the nRF2401 the arduino pin will still stay high. How do I create a circuit so that the data1 pin can do both?
I need to connect my arduino to a 3.3V RF device (nordic nRF2401 to be exact). I read the interfacing 3.3V tutorial but I am still confused with one of the pin's that require input and output. The data1 pin needs to be both (on startup for configuration and then for data retrieval). If I use a diode and a pull up resistor when the data1 pin goes low on the nRF2401 the arduino pin will still stay high. How do I create a circuit so that the data1 pin can do both?