Frequency Hopping experiments on the NRF24 & full tx/rx

[AndyS]

Double post. Deleted

[AndyS]

After a long time I am revisting the NRF24 project. I have a few modules some with pa and screened as per documentation and some of the basic no pa with internal aerial. Problem is the same as I was getting before. Slow led rate and jumpy servos. Seems the same on all modules either with or without capactors. Whereas in the past the capacitors did solve the problem. What is the ideal value of capacitance to put across the 3.3v supply? The recommended 100 microfarad and 100nf in parrallel is a total of 100.1 microfarad. How come the 100nf is required. I have also seen 220 microfarad recommended and used. So far even though monitoring the 3.3 v on a scope nothing seems to help. Is there any other factor that may be causing a very slow led flash rate.

[Martin]

The idea of low and high value capacitors in parallel is that the low value ones are good at bypassing higher frequency noise or glitches.
The higher value ones tend to have more inductance - not wanted but a consequence of their design. So they're good at smoothing larger glitches and lower frequency noise, but can "miss" the highest frequencies.
I don't know if this matters, in practice, with the nRF24L01+ modules and their capacitors. - It could just be the designer following the rules learned when studying electronics

[AndyS]

Thanks for your reply. I will continue with the 2 in parrallel.