Questions tagged [nrf24l01]
An Ultra low power 2.4GHz RF Transceiver IC
132 questions
0 votes
2 answers
34 views
Can we manually drive CSN or CE pins of NRF module while driving the module from some third party library?
This is a Wemos D1 mini ESP8266 module. The SCL and SDA lines are from a RTC module. And all the connections CE, SCLK up to CSN are from NRF24L01 module, and it is mandatory to use SPI communication ...
- 907
1 vote
2 answers
106 views
Does it really matter to interchange transmitter and receiver in a transceiver module, where one module is more powerful than other?
I have this and this module (one piece each), which I will be using to automatically turn on and off my water pump (which is installed in the basement, inside my house) by sensing the water level of ...
- 907
1 vote
0 answers
122 views
nRF24L01+ Communication Issues
I am trying to communicate between 2 nRF24L01+ and am using 2 Raspberry Pi Pico's to control them. Below is my code, schematic, and the datasheet. My problem is that the transmitter always prints <...
- 89
1 vote
4 answers
89 views
nRF24l01: Avoiding address conflicts
I have never used the nRF24l01 before, and there is something I don’t fully understand. I’ve tried googling and searching the forums but haven’t found a satisfactory explanation. My understanding is ...
- 1,719
1 vote
1 answer
126 views
Power supply problems: battery drains too fast in idle
I built a system to lock/unlock door using a fingerprint module (FPM) and servo connected to ATmega328P MCUs. The system, which is battery powered, works by FPM sending lock/unlock commands using a 2....
- 881
0 votes
1 answer
86 views
NRF24L01P only works with 15cm jumper wires on PCB
This is my first time designing a PCB. I designed and printed a PCB that has an NRF24L01P RFM. The system involves a transmitter and receiver. Transmitter is working as expected, but the receiver is ...
- 881
3 votes
3 answers
448 views
PCB Opinion and issues with NRF14L01
I'm new to PCB and trying to make my model rocket design into a PCB instead of a protoboard. I'm having issues with the NRF24l01. It seems the ack packet doesn't send or receive sometimes also ...
- 61
-1 votes
1 answer
55 views
Adding a second antenna to nRF2401l
All nRF2401l modules comes with one antenna. Can we add a second antenna to a custom made PCB? The image below from the chip data sheet shows it has 2 antenna pins. Am I right in this?
- 11
1 vote
0 answers
86 views
Authorization for non-commercial use of nRF24L01P in custom PCB (university project)
For a university project (non commercial) I am designing a PCB that uses a nRF24L01P. I read a number of forum threads (such as FCC certification for nrf24l01+) where the need of an FCC approval is ...
0 votes
0 answers
87 views
Load cell value becomes negative when above certain force
I have a 100 gram load cell with the hx711 amplifier board. I have it wired up to an arduino nano with an NRF24L01 module to send the raw value to another arduino nano. The problem is that when I aply ...
7 votes
2 answers
1k views
Do radios need a minimum range to function properly?
I'm going to use some well-known radios (nRF24L01+) to wirelessly read some voltage/current sensor data over little distances on a quad-copter since the drone is quite populated and we don't want to ...
- 2,395
3 votes
2 answers
484 views
RF receiver frizzes when start brushless motor
I'm trying to build a quadcopter with and Arduino, and I'm facing a problem, that is the RF receiver of the quadcopter freezes (not the Arduino) when I turn on the brushless motor. ...
0 votes
0 answers
37 views
What is the best way to understand if nRF24L01+ still works properly?
I continuously transmit some data from one nRF24L01+ (nRF) to another one. After a long transmission time, I often experience that the transmitter stops its transmission at a random time for no reason....
- 311
0 votes
0 answers
132 views
How to use nRF24L01 on ATTiny85 and together with serial TX?
I am using ATTiny85 + nRF24L01 to receive radio messages. After connecting nRF24L01 to ATTiny85 I don't have much PINs left, as I use all pins except PB5=RST: ...
- 279
2 votes
1 answer
112 views
Can I use the NRF24L01 in a vacuum?
Can I use the NRF24L01 module in a vacuum chamber? I want to put sensors in the chamber, connect them to an Arduino with an NRF24L01 module, and transmit data. Will the module work in metal and glass ...
- 21