I am using a NRF24L01+ 2.4Ghz radio transmitter to talk between Arduinos.
I was having issues with them frequently cutting out for short periods of times.
I noticed that when I added 100uF capacitors to the power pins of the NRF, I had almost no packet drops.
I added 100uF tantalum capacitors to my circuit board design, but when I plugged in the NRFs, I was still getting the same issue as before (albeit slightly better.)
When I soldered the capacitor onto the leads manually, I was using an aluminum electrolytic capacitor.
The NRF is connected to its own dedicated 3.3V LDO regulator that can supply 500ma of current, so power is not an issue.
I heard that these NRFs are incredibly sensitive to voltage noise, so adding capacitors is good for them.
But my suspicion right now is that for this case, aluminum electrolytic capacitors are better for this purpose than tantalum (and cheaper.) Am I right in this assumption?
Also, if I am trying to get the smoothest voltage to the NRF, what is the best capacitor setup?
Should I do one big 100 uF aluminum electrolytic, or should I do a 100uF aluminum and a 0.1 uF ceramic capacitor in parallel?