nRF24L01 + PA + LNA Capacitor choice

I've asked this in a few topics before, but I haven't gotten an answer

Basically I need to know which capacitor I need to put in my nRF. One of them has a 47uF and the other has a 100uF, but I don't know if these capacitors are the right ones

I've seen people using ceramic capacitors (more specifically the 104) but some use electrolytic capacitors. What capacitor can I use to get the most out of my nRF?

Also what is the difference of using a ceramic capacitor and a eletrolitic capacitor?

What does that mean? Sometimes people have inadequate power supplies for their nRF devices and add an electrolytic capacitor on the power and ground leads. Do you have problems that you are trying to fix?

1 Like

It's because I don't know if the capacitor can affect the distance of the nRF.

NOT AT ALL! Might have an effect on the operation of the device, but distance is mostly a receive problem.

1 Like
  1. So using a ceramic or electrolytic capacitor have the same effect?
  2. Which one should I choose? And what value should it have?

Where are going to put it and what is the reason? What tests have you done?

1 Like

I see potential hardware problems, post an annotated schematic showing all connections, power, ground, power sources and any other non generic arduino device.

Post #2 answers your query fairly well as far as more stable power supply is concerned, again little to do with range. As a "normal " supply I simply use the adaptor board designed for them as it gives the above plus with it's onboard regulator, a means of using a wider supply arrangement.

Range problems can be from using clone devices, (and no knowing what you'll get except perhaps ordering from reputable dealers as usually a higher cost), packets sent , many many environmental conditions .
Other performance due to being too close between tx and rx.
Much has been wriiten about this and more and starting reference seems to be from Robin2 tutorials in here. Others will know the reference address.

This may be the tutorial you mean:
Simple nRF24L01+ 2.4GHz transceiver demo
https://forum.arduino.cc/t/simple-nrf24l01-2-4ghz-transceiver-demo/405123

Also my transmitter nRF only works properly if i'm stepping directly on the ground and touching the antenna. Does this have something to do with the capacitor? or is it just bad solder?

Are you using that antenna you took off your wifi router?

No, it's the one that came with the module. But I think I'll try the wifi router antenna later.

Were you holding the antenna at the top or bottom?

I were touching the antenna connector

That would help to create a ground plane for your antenna and possibly make it transmit/receive farther.

Sounds like a hardware problem to me. See post 6.

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.