Wiring a separate power supply for the radio
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Hi,
I think this is a good thread since power supply seems to be the most tricky one in this. Shouldn't it be possible to have a "reference architecture" for power supply to eliminate 80-90% of the issues people (including me) run into?!I made some tests on a problematic sensor yesterday and sicne I use NRF24L01+PA+LNA (Antenna version) I added 5V external supply and AMS1117 5V-3.3V Step Down Module, with IRQ connected over 10k resistor but got a number of problems e.g. MySensors complaining "check wires". Maybe it's possible/ok (the logic detecting presence of the radio) if the radio isn't alive before Arduino starts?!
Got tired of it and setup a new sensor...
@jocke4u I have since put the set up I have described above in permanent operation as my Vera gateway and have not had any problems with it. I do have a cap across the NRF24L01+PA+LNA power and ground terminals--that may make a difference, even with external power. I did power up the radio before the Arduino.
