Radio Frequency. Typically used to refer to the radio portion of the electromagnetic spectrum which is used for wireless communication. Strictly speaking though, RF can refer to any oscillation (electrical or otherwise) at the associated frequency.
-1
votes
2answers
19 views
Problem with combination of Bluetooth and RF 434MHz with Arduino Mega
I want to receive text from Bluetooth from an android phone to Arduino Mega. Then I want to send that text to other Arduino UNO through RF 434MHz.
Here is my code for Transmitter.
#include <...
0
votes
0answers
14 views
How to make a 433 scanner by SI4463? [duplicate]
I want to make a 433 scanner like this . But , I just know how to use RH_RF24.h to control SI4463. Although there is a function about RSSI in RH_RH24.h . But it is not suitable for scanner . So ,I ...
-1
votes
1answer
53 views
What is the principle of scanner
I find a 2.4GHz scanner in this web . I want to do same thing in 433 Mhz with SI4463. But I fail to understand it's principle. Who can explain it ? Thanks.
0
votes
0answers
17 views
Unable to use ENC28J60 and RF 433mhz together
I would like to ask if any of you guys could give me a help with this problem.
I'm working on this project to make a home automation system to my house using Arduino Uno + ENC28J60 + RF 433mhz.
I'm ...
0
votes
2answers
37 views
RF signal boosting
I'm working on a quadcopter project. The quadcopter will be quite autonomous, but sometimes I'll need to send some messages to it. So I built a simple, one-way RF communication system based on two ...
-5
votes
1answer
42 views
Multiple (3) RF transmitters to a single receiver?
How can I have three remote transmitters send distinct signals to a single receiver?
My project requires 3 remote controls, each with 2 inputs.
I need to distinctly identify these 6 signals from ...
1
vote
0answers
30 views
How to find a clear frequency when use SI4463 [closed]
I use RH_RF24 to control SI4463, and success to send some simple data. But I know maybe there will be disturb . So, I want a way to avoid disturb.
First, whether there is a way that choose a best(...
1
vote
2answers
38 views
read AM signal only with an Arduino
Some people have managed to send simple AM signals with just a bare Arduino. An example is here.
This works thanks to the fact that the PWM can reach high frequencies and, setting the divider properly,...
3
votes
1answer
25 views
Read signal from co-ax cable with ADC
I have an Arduino Uno and I'd like to read a signal from a co-ax cable with it. The cable carries 12VDC (power for other components) along with a signal (of about 1 Ghz frequency). How do I go about ...
1
vote
1answer
26 views
How to use setModemRegisters in RF24
The below picture is the introduction of setModemRegisters .
First: What is the mean of ModemConfig* config? I mean: how to write the parameter. Maybe just give a example, and it will be better if it'...
-1
votes
1answer
27 views
Speed of comunication by SI4463 under RH_RF24.h
As in this SO question, I use use a RH_RF24.h to control an SI4463. In RH_RF24, there is not anything about the speed of communication. I need the way to control the speed of communication. Because I ...
2
votes
1answer
46 views
How to program an nRFL01 RF module that is connected to a pc via a USB to UART/TTL adapter?
In a few of my previous questions I was told that the nRF24L01 RF Module can be connected to a pc using a USB to UART/TTL adapter. After a bit of research I understand that one way to use it is to ...
0
votes
1answer
54 views
Can the EWRF 3022 module be directly connected to the pc totransmit data from the pc wirelessly? [duplicate]
In my project I want to connect my pc to an RF transmitter. The receiver will be connected to an arduino on my robot. However most of the RF modules I looked up couldn't be directly connected to my ...
0
votes
1answer
34 views
How to connect an RF module directly to a PC without using an arduino? [closed]
I know that in xbees i can connect the xbee module directly to my pc using the USB explorer. But I'm using the nRF24L01 RF modules. I want to transmit from my pc, via the RF transmitter to my RF ...
0
votes
2answers
49 views
Transmitting Variables over RF
I'm using the 3715 RF arduino modules and a hc-sr04, and i'm trying to send the distance i get from the ultrasonic over to the arduino with the rf recieving module but i get something like this:
...
2
votes
1answer
98 views
options for wireless data broadcasting to hundreds of nodes
I would like to build approx 100 arduino devices that can talk to each other, I have a set of constraints that I'm looking to get some insight on :
all devices would operate within a 300 meter ...
0
votes
0answers
14 views
433M modules w. soldered 34.6cm antenna, first test
I'm doing a first tx/rx on a pair of modules, and some hams have alluded that they 'autoadjust' - since I've soldered halfwave antennas onto the modules, what's the optimal range for first tests? And ...
0
votes
0answers
22 views
AD8347 application without using baseband amplifier section
I am using the AD8347 as a mixer to demodulate a RF signal. However, I am operating the chip without using the AGC function and don't want any amplification for all three internal amplifiers. ...
0
votes
0answers
33 views
Can't able to receive RF signal using arduino
I'm a beginner using an Arduino Uno R3. I am trying to receive RF signal using an RF Receiver. I used the RC Switch library to decode the RF signal. When sending signals from the RF Remote, the ...
4
votes
0answers
91 views
Problems with transmission between Attiny and Arduino Uno with 433MHz RF modules and Manchester
I am trying to transmit from an Attiny85 running at 16MHz internal clock to an Arduino Uno with the Manchester Library:
https://mchr3k.github.io/arduino-libs-manchester/
The problem is that the ...
0
votes
0answers
55 views
Using the manchester Libary with Attiny85 and Ardunio Pro Mini
I have problems sending data from my Attiny85 to my Ardunio Pro Mini with 433MHz RF Modules with the Arduino Manchester Library.
The LEDs are switching on both sender and receiver, but I am only ...
0
votes
1answer
385 views
Send RF 433MHz data to Domoticz RfxCom with protocol X10 from Arduino Nano
I have installed Domoticz on Raspberry Pi and bought an RfxCom 433MHz emitter/receiver.
It works well for example with Chacon DiO 54781 door sensor.
I want to create my own sensor with Arduino that ...
0
votes
0answers
25 views
Arduino Mamba PLC range
does anyone know the approximate range for the Mamba Power Line Communication Arduino shield here. The website says
Note: You will need to supply at least 1Amp for the shield to function correctly....
0
votes
1answer
86 views
nrf24l01+ packet loss caused by arduino reading and communicating with sensors
I have 2 arduino communicating with each other. My problem is that the one sends packets every 1.5-2 seconds but the other arduino does sensor reading and data uploading with a wifi module which may ...
0
votes
1answer
88 views
Arduino - RF 433 Mhz transmitting string and but receiving ASCII values of those characters
When I am using RF 433 MHz module with ARDUINO MEGA then it is transmitting any text or anything in ASCII values. Now how to decode those ASCII values to alphabets? If I use ASCII conversion programme ...
1
vote
1answer
32 views
Send button press over RF
I'm trying to send a button press over RF (performing a closed circuit operation on the receiving end).
I have a controller with an UP and DOWN button. Unfortunately I am limited to the cable length, ...
1
vote
4answers
91 views
Reduce 5v Trinket Pro to 3.3v?
Apparently these nRF24L01+ modules need 3.3v, but I've only got 5v Trinket Pros that I'm using.
How can I reduce the voltage to the RF transmitter?
Would a voltage regulator work? Specifically ...
0
votes
0answers
37 views
slow transmission when using RF 315Mhz and bluetooth
I am creating game controller using Gyroscope these data will be transmitted from slave Arduino to master Arduino using RF315
then these data will be transmitted to android phone via Bluetooth.
...
0
votes
0answers
91 views
RC Switch with Arduino Pro Mini & 433MHz Receiver
I have downloaded the latest RC Switch library and uploaded the simple receive example to my arduino pro mini 3.3v with the receiver attached to pin 2, interrupt 0.
Testing it with my controller, ...
0
votes
0answers
37 views
Sync arduino-python transmision
I'm communicating two Arduinos with RF modules.
One of them is:
controlling a process
measuring an analog input
sending the measurement to the second Arduino
The second Arduino is connected to a ...
3
votes
1answer
153 views
How can I get ultra clean dc wall power for my arduino project?
I'm doing an rfid project that requires a read range of at least 5 inches or about 13cm. I'm using a nano with a usb port, a rfid reader from priority 1 design and a large antenna. The problem I'm ...
-1
votes
1answer
56 views
radio wave generation using arduino
const byte ANTENNA = 9;
void setup()
{
// set up Timer 1
TCCR1A = bit (COM1A0); // toggle OC1A on Compare Match
TCCR1B = bit (WGM12) | bit (CS10); // CTC, no prescaler
OCR1A = 9; ...
1
vote
0answers
92 views
Connecting Pulse Sensor to RFDuino Simblee
I am trying to make a heart rate sensor watch. I am trying to do this using a Simblee (www.simblee.com) and a Pulse Sensor (www.pulsesensor.com) however they will not work! The original code from ...
2
votes
1answer
96 views
rf24 change order of data
I'm using two Arduinos with the rf24 modules.
I want to control a process with those, but for now I'm just checking the connection.
This is the code of the master:
#include <SPI.h>
#include "...
1
vote
1answer
270 views
Rc switch library transmit using protocol 5
I'm trying to transmit using mode 5 with the rc switch library, but my reciever tells me that the data is using protocol 2. I'm using the RecieveDemo_simple example as a sniffer for 433 MHz and I'm ...
0
votes
2answers
238 views
RF 433 Module with VirtualWire: transmit and receive using the same Arduino board
I was wondering if it was possible to work, in the same Arduino board, both Transmitter and Receiver RF 433 MHz modules. Is it feasible?
Here is the schematics I tried:
1) a pushbutton toggles a ...
2
votes
1answer
128 views
Why is the nRF24L01 not working with Arduino Esplora?
I am working on a remote control car from an Arduino Esplora board and the Mega 2650 Board. My problem lies with the Esplora board as the nRF does not transmit like it is supposed to or does not even ...
0
votes
0answers
80 views
radio frequency communication of potentiometer values between arduinos
Using a 434 MHz transmitter and receiver combination, how would one communicate potentiometer values from a transmitting Arduino to a receiving one? Assuming the virtual wire library would be used I ...
1
vote
1answer
289 views
434 RF Transmitter and Receiver for distance measurement problem
As a student I'm working on a project where we use 434 MHz RF Transmitter and receiver pairs for distance measurement. I know that this technology is not a good choice for this, but we have to deal ...
3
votes
1answer
146 views
Module and library for self healing large sensor network
I have to build a wireless sensor network with arduinos on my project. It does not need to be a mesh network, but it needs to have self healing capabilities.
I would like to use something cheaper ...
0
votes
0answers
63 views
443 MHz RF Transmitter Help
I have recently bought a kit that included a 443 MHz Transmitter and Receiver. I have gone looking online and everything I've read uses VirtualWire, which is outdated, so I was wondering whether ...
1
vote
1answer
55 views
panstamp device signature is random
I Have 2panstamp. I can program the first but not the second with the arduino program.
When I upload the sketch (a simple blink) on the second, I got this
Reading | #################################...
2
votes
5answers
3k views
433mhz range optimization
I would like to get the best range possible from my 433MHz modules. After A LOT of searching and reading, I'm convinced I should be able to cover 10m indoors with free line of sight.
[update]
After ...
2
votes
1answer
52 views
powering RF on GPIO
I have been running a simple RF link between 2 arduini uno recently and everything went faily well. I am now trying a new project with an arduino mini pro (5V/16MHz) and the seeeduino RF link (@315MHz)...
1
vote
0answers
25 views
Looking for an existing lightweight RF protocol
I'm currently looking for an RF protocol that doesn't use much power (generally much less than wifi) Something similar to simple AM radio, but with an authentication library readily available. ZigBee ...
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votes
1answer
167 views
2 way RF with Virtual Wire / 315 / 433 MHz
I am trying to figure out how to get 2 Arduinos to talk back and forth from one another using cheap simple RF modules. I have a total of 4 RF modules (2 receiver and 2 transmitter) and 2 Arduinos. I ...
0
votes
1answer
188 views
How to transmit more than 1 byte continually?
In software serial, the write function only sends 1 byte at a time. Is there someway, some library, that i can send multiple bits/bytes, without stopping (and not using digitalWrite)? i want to be ...
0
votes
1answer
166 views
Unable to tell if error is from receiving or transmitting end
so I am having trouble sending data using software serial's write function.
TX Code:
#include <SoftwareSerial.h>
SoftwareSerial TX(2,3);
void setup() {
// put your setup code here, to ...
0
votes
2answers
146 views
Is there a away to transmit sensor signal over RF without Arduino?
I would like to place analog sensor in a place, that is impractical to reach with a wire. But it looks like an overkill to use a separate small Arduino board to read and transmit sensor signal to main ...
0
votes
0answers
127 views
Would the VirtualWire library cause any conflicts with the hardware interrupt?
I'm using the VirtualWire library and set up my transmitter and receiver on Arduino.On the other hand, I'm also using the bluefruit nrf8001 breakout board to send data captured by the receiver to my ...
