Questions tagged [radio]

"Radio" here refers to wireless communication other than normal wifi or bluetooth bands, e.g. FM, shortwave, and RC.

Filter by
Sorted by
Tagged with
-1
votes
1answer
35 views

What's the best way to remote control a Raspberry pi - powered robot? [closed]

I'm going to build a robot powerd by raspberry pi and i wnat to control it remotely, the principal tasks that need to have a remote exchande of data is: the streaming of 3 cameras the monitoring of ...
0
votes
1answer
22 views

Is there a way to transmit live voice through radio without a soundcard on raspberry pi 3

Is it possible to transmit live voice through raspberry pi 3 without a usb soundcard I only have a hradset with a mic And I am a beginner If possible let me know the answer in a simple way Thank you
0
votes
1answer
46 views

Is it possible to receive an FM radio's audio stream in software?

My goal is to be able to "rebroadcast" FM radio over the internet. What I mean by this is connect some kind of FM radio board to the raspberry pi, and receive the audio in software (i.e. ...
0
votes
0answers
33 views

Connect wifi direct (GO) with 5GHZ frequency

I can connect with 2GHZ frequency and can transfer data successfully using WIFI DIRECT. In this connection, I have a data transfer rate is only 2MB/s. By online search, I found that if we use the 5GHZ ...
0
votes
2answers
58 views

How to send text over rf radio?

I just got my hands on a 433MHz RF Wireless Transmitter and Receiver Module and I was wondering if anyone knows how to send text data (not just yes or no) using them and a RPI. I would appreciate it ...
0
votes
3answers
54 views

How to send gps data over short range with rpi?

I am planning on starting a project soon that requires me to be able to send GPS data over a short distance (no more than 1 mile at most). I have never done anything like this with a rpi before so any ...
0
votes
0answers
23 views

Calculating a time-varying voltage output that simulates a modulated carrier wave

So I have this measurement instrument and I want to transmit its data (database files from MySQL) at low frequencies (80-100kHz) through a limestone cave ceiling to the surface. Disregarding the ...
0
votes
0answers
46 views

Raspberry AM radio transmitter

Is there a AM radio trasmitter library for raspberry? Like PiFMRDS ? AM travels further and it would get better range on low power RPi trasmitter. Or how could I do that myself? Generate high (~1Mhz) ...
0
votes
0answers
26 views

Trying to make a car horn out of a pi zero w and possibly use it as the radio

Hey there I’m looking into buying a raspberry pi zero w to turn it into a car horn. ALso was wondering if it would be possibly to turn the same raspberry pi into the car radio running off two ...
0
votes
0answers
37 views

Specifics on connecting RFM69 to pi3

I am trying to follow these instructions to test a RFM69 module added to an Raspberry Pi 3. This is likely rather naive, but I would like to know details on how to connect the pi to the module. The ...
1
vote
1answer
79 views

Raspberry Pi / Low-power FM transmitter?

I recently got a Raspberry Pi 400 and I tried this https://github.com/markondej/fm_transmitter without an antenna. The range was approximately of about 5 feet, from what I could notice. Now I've heard ...
0
votes
0answers
41 views

450MHz - 2.4GHz Receiver

There is a device in my house that is broadcasting in the 450MHz - 2.4GHz range. I do not know the exact frequency that the device is broadcasting on. I am looking to use my raspberry pi to receive ...
0
votes
0answers
20 views

accessing terminal from long rang

I'm new here and I followed a guide to create a Raspberry Pi 3B+ / Navio2 drone. I have it all set up with radio telemetry modules and Mission Planner is working. Now my goal is to access the RPi/...
1
vote
0answers
23 views

three position on/off/on

Hi I am converting a 1963 Roberts R300 transistor radio into an internet Radio. I will be using a raspberry pi for this and as the radio has a three position on/off/on switch to choose between long ...
1
vote
1answer
49 views

How is the radio module connected to motherboard (CPU) on Pi-4? [closed]

By this link we can see that in Pi 4 there is Wi-Fi module (called radio module under the picture). But I can't figure out, how is this module connected to motherboard? Is this PCI bus or whatever? ...
1
vote
0answers
40 views

Inject audio and broadcast/stream over internet

I like to attach an FM tuner like Si4703 to raspberry pi 3 and want to rebroadcast particular frequency (FM) over the internet (I want to listen to local FM when I'm in my office since I don't get a ...
1
vote
0answers
185 views

pigpio: Read PWM from RCcontroller then send to ESC via GPIO

Im trying to learn Python by combining my interest in designing an AWD radio controlled car (3D printed, Im decent with Fusion 360 too) with some smarts from Pi/Python to allow things like software ...
0
votes
1answer
48 views

Dynamically setting address of HT12E

I have a project where I need to send a wireless signal to one of several receivers to turn on an LED. One transmitter, several (many) receivers, each with an LED. The receivers need to have low ...
0
votes
0answers
38 views

Wireless Protocol to use in a Forest

I am planning to make a robotic tank for monitoring a large wilderness area like a forest. I need some form of radio communication with which I can control the tank from anywhere in the world. What ...
0
votes
1answer
79 views

Signal generator connected to raspberry pi via USB

Ido connect to the device from my raspberry pi and able to send commands. The power consumption of the SG is 2.5 W. That means that the current of usb port should be 2.5 / 5 = 500 mA. >>> ...
2
votes
0answers
67 views

Unable to intercept the code of my remote control at 433 MHz with RaspberryPi

I'm trying to reproduce the code generated by my universal 4-channel radio control with RaspberryPI. I cloned my remote with a universal remote like this: I used the libraries included in 433Utils ...
2
votes
1answer
506 views

Pi based Radio Telescopes?

I'm interested in building a Raspberry Pi based radio astronomy telescope. I'm not too set on any particular science objectives, but rather just want to get some experience with the full system, learn ...
0
votes
2answers
1k views

How to decode a 433MHZ signal

I've made the classic 433mhz send/receive experiment, using cheap hardware on the same breadboard and same raspberry, I've wired both sender and receiver to VCC 5V, GND to GND and data to GPIO 27 (...
1
vote
0answers
705 views

Control 868MHz device from a RPi4

I am trying to control my electric blind (elero brand, controlled by this remote) from my RPi4, and while I'm fine tinkering with anything on the software side, I must admit my knowledge of GPIO and ...
3
votes
3answers
1k views

RF 433 MHz cannot transmit or receive from more than 10-30 cm

I have 3 Pi's and a transmitter and receiver on all of them. We are trying to just send a number from Pi 1 to Pi 2 and have Pi 2 send back a response. We followed the instructions in https://www....
1
vote
2answers
614 views

Using EnOcean PI 868 with raspberry PI4

first of all: I'm new to raspberry I.ve just bought a raspberry PI 4 together with an EnOcean PI 868 module to set up a house automation system. To make it run I've tried the steps described on the ...
1
vote
1answer
1k views

How can Rpi4B use UART to read and analyze received data at a 3DR FPV Air Radio Module?

I am trying to set up the FPV telemetry radios (Air and Ground Module 433MHz). I have connected the Ground module to my laptop (USB) and air module to Raspberry Pi 4 UART pins. Using Mission planner ...
1
vote
0answers
160 views

FM Radio with HifiBerry Amp2

Is there a way of running a Raspberry Pi 3 with a mounted HifiBerry Amp2 together with an FM Radio Module e.g. TEA5767 FM Radio Breakout Board? Currently I set up my RPI to run Mopidy and Spotify ...
0
votes
0answers
297 views

Raspberry PI 3 with Funcube Dongle Pro+ SDR does not read the antenna

I am trying to configure my RPi3 into a small receiving ground station. I already have installed the gnuradio, gqrv, gpredict packages. The RPi is connected to an SDR dongle (Funcube Dongle Pro+) with ...
1
vote
0answers
186 views

RF 433Mhz reciever not finding remotes

I'm having some trouble with my 433Mhz receiver on my pi. I first tried to read the signal my Nexa PET-910 and 433Mhz doorbell sent on the pi, but I could not get any usable data, just noise, or no ...
1
vote
1answer
93 views

Stream web radio and choose via Smartphone app

the question could sound trivial, but I'm super new in the Raspberry world. I searched a lot in the internet for this problem, but I wasn't able to find an "easy" solution. I've a raspi 3 with ...
1
vote
1answer
78 views

Radio Transmission

Yes, I pretty much a noob, but I was wondering if there is a way to program the Raspberry Pi in Assembly Code to transmit data via radio frequencies (like remote control) between itself and another ...
1
vote
1answer
2k views

433mhz RFSniffer doesn't recognize signal

as in the tile, I've tried to sniff a 433mhz radio signal with my raspberry pi 3b but something failed the receiver is one of the cheaps available in the web, 5v powered. I've followed this tutorial ...
-1
votes
1answer
49 views

RF script automation

First time poster, so forgive me if I missed anything. I'm trying to get an automation script working with some RF modules. I want a script to wait for a certain code, and then output 1/0 to a file. ...
0
votes
2answers
2k views

FM transmitter antenna length

I'm a new raspi user, and I'm starting to build some projects with hardware. I would like to try this FM radio station for example, but I have a doubt about the antenna's length. This is important ...
6
votes
4answers
1k views

How much electromagnetic or radio interference is caused by a typical unshielded Raspberry Pi?

Most desktop computers come with metal cases, which have a side-effect of blocking the radiofrequency emissions or electromagnetic radiation which is produced by the internal electronics. Back when ...
3
votes
2answers
1k views

Detecting electromagnetic field with Raspberry Pi

For my school project, my objective, among others, is to detect EMF changes (frequencies between ~400MHz and 2,4GHz) in a room (to simplify it even more, let's assume it's gonna be very small room/...
0
votes
1answer
98 views

starting up radio and one led

I'm using this in as my /etc/init.d/pirateRadio.sh the Radio does play a wav with this in the rc.local export PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/sbin:/usr/bin sleep 10 ( exec &&...
2
votes
0answers
907 views

Transmit 433 MHz Manchester from Arduino - receive on Rasberry Pi

On Attiny85 I'm using Manchester encoding library with code #include <Manchester.h> #define TX_PIN 1 uint8_t transmit_data = 123; void setup() { man.workAround1MhzTinyCore(); man....
1
vote
2answers
447 views

PiFmRds: Raspbian freezes when I change windows. How do I fix it?

I am running my raspberry pi 3 with a radio station software PiFmRds The program works fine but then when I go to move the window (or any other window) the system freezes and I have to unplug and ...
0
votes
1answer
693 views

Send and receive 868Mhz signals with my Pi

My home lighting is achieved using wireless Delta Dore switches working in 868 Mhz. Here are my switches reference : https://www.deltadore.fr/data/product_files/6351091/documents/notices/Util/fr/...
0
votes
0answers
44 views

Sudden Square Wave Transmission

I was playing around with korn101's PiNumberStation (found here: https://github.com/korn101/PiNumberStation). It uses GPIO Pin 4 on the Raspberry Pi Model B. I had it working excellently. I had ...
1
vote
3answers
5k views

AM/FM receiver that can be tuned through raspberry pi?

Is there an AM/FM receiver that can be hooked up to the raspberry pi and be tuned by the pi? I am building a radio and obviously need a receiver, and I want to be able to tune it through the pi. I am ...
0
votes
1answer
65 views

dev file for microphone

On my pi, I want to use my microphone in the terminal, as if it were a sound file. If it is not clear what I want to do, I am trying to broadcast sound as an fm radio signal. The command that I use ...
5
votes
2answers
169 views

Gather data in rural areas

I am building a prototype with temperature and humidity sensors for rural areas and I am trying to determine which is the best way to gather data, since Internet may not be available (no WiFi). I am ...
2
votes
0answers
1k views

Loopback to aux out and record audio at the same time from audio in

I am currently developing a device that silences adverts from a streaming radio. Im taking audio input from a radio to a USB sound card.To silence the ads, I have am currently using the arecord ...
0
votes
1answer
915 views

How to control a RF transmitter using Raspberry pi GPIO [closed]

I'm very new to this so apologies if this is a stupid question. But I'm thinking of controlling an RC car with a RF transmitter/ receiver pair using the Raspberry Pi. I'm thinking of hooking up the ...
3
votes
0answers
3k views

Pi bluetooth not detecting any devices

Board: Raspberry Pi 3 I have a Pi which is unable to detect any bluetooth peripherals. I diagnosed the bluetooth service by running sudo service bluetooth status which throws the error Failed to ...
2
votes
1answer
524 views

How do I connect my PHAT-DAC to the Adafruit class D stereo amp

Following on from my previous question here I have the Adafruit 2.1 W stereo amp and now I'm researching how to connect it to the Pimoroni PHAT-DAC. I've found plenty of references to a mono amp but ...
1
vote
0answers
2k views

Testing 433 MHz Receiver- Data Pin Indicating Constant Signal

I'm trying to understand what's happening with the 443 MHz receiver I've plugged into a Raspberry Pi3. When I plug the data pin into GPIO 21 and I run a simple python sniffer script to plot the ...