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Questions tagged [pifm]

a software used to turn the Raspberry Pi into an FM transmitter.

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0answers
28 views

I think my PiFM just broke my Raspberry Pi

I followed the PiFm instructions to broadcast a .wav file on 87.5 MHz. I connected my antenna to GPIO 4, but nothing happened. Then I unplugged & tried again, but got the same result. I think I ...
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0answers
16 views

PIPE jack_capture on pi_fm

I want to transmit sound over FM with a Raspberry pi. To avoid latency, I would like to use jackd rather than ALSA to process audio. I try this command to route stdout into pifm : jack_capture -ws |...
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1answer
1k views

auto start using /etc/rc.local or /etc/init.d not working

-My problem: I can't get autostart to work (/etc/rc.local or /etc/init.d) /etc/rc.local screen never boots and kills the pi, which then needs to be re-flashed to work again. /etc/init.d no auto ...
0
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1answer
54 views

Calling random audio files with PiFm + Node.js

I am trying to play a random amount of random audio files over PIFM using node.js // A function that will let me call and play one random audio file. function audio1(){ var child_process = ...
1
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1answer
80 views

Node.JS, PiFm and SetTimeout()

I'm working on an audio installation involving PiFM (https://github.com/oatmeal3000/pi2fm) that I want to play random audio files from a large selection of .wavs. My plan is to randomly select an ...
1
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0answers
52 views

Communication system using PiFmRds between two pis

I would like to use PiFmRds as a communication method between two of my Pis. I would like to be able to encode text or other data into the RDS RT (64 chars) and then decode it once received. Or even ...
1
vote
1answer
144 views

PiFM Crashing on Boot

I've only recently begun working with Raspberry Pi, and decided to start with what seemed like a relatively simple project in the Pirate Radio (found here), but I have been unable to make it work ...
0
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1answer
206 views

pifm Crash Loop my Raspberry Pi

I've made a FM radio transmitter using the tutorial from Make: http://makezine.com/projects/pirate-radio-throwies/ Everything worked perfectly until I got to step 7 (Run PiFM at Startup). I wrote ...
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2answers
94 views

Issues with PIFM Numbers Station tutorial/project

I am trying to get the following PiFM numbers station project working: https://www.youtube.com/watch?v=SZx9aB1jkH8 https://github.com/korn101/PiNumberStation I'm running it on a Pi Model B+ and ...
0
votes
2answers
503 views

PiFM on the Pi 2

I encountered some issues when trying to create my own FM radio after downloading pifm. Indeed after plugging my own designed antenna, writing on my pi's terminal: sudo ./pifm sound.wav 100.0 I used ...
1
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2answers
1k views

PiFm on raspi-zero

I'm having some issues with PiFm on the raspberry pi zero - I found this thread but nothing to alleviate my problem. PiFM not working for me I installed PiFm on a raspi-zero and it seems to be ...
1
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1answer
368 views

Ffmpeg Piping output to pifm

I am trying to convert mp3 audio files on the fly with ffmpeg since pifm(a program to transmit over the FM band) only takes a specific file. I was told I could use: ffmpeg -i input.mp3 -f s16le -ar ...
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0answers
226 views

PiFM on another GPIO

I want to make my own Pi Radio using PiFM on my Raspberry Pi 2, but i have a display already mounted on pin 4. Can i use some other GPIO pin for mounting antenna ? And if i can, which is the best GPIO ...
4
votes
3answers
440 views

PiFm dBµV/m without an antenna

I have been wanting to tinker with the Raspberry PI to learn more about electromagnetic frequencies; however, before initiating anything, I read the legal debates regarding PiFm. It appears that both ...
1
vote
2answers
505 views

Pi as HF ham band transmitter and FM repeater

If the pi is able to transmit fm signals from 1 to 250mhz wiht pifm and it has been used as an HF qrp transmitter why hasnt it been further developed as an HF transmitter with a small cheap amplifier? ...
3
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2answers
1k views

Problems with Pifm legality

There is a lot of discussion online about whether using Pifm is okay because it is low powered, or whether it is very bad because the square waves cause a lot of interference outside the FM band. ...
3
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3answers
1k views

PiFM not transmitting on some frequencies

I was playing with the PiFm on my Pi and successfully transmitted the sound.wav on a specific frequency. That is 94.5 . But when I am trying to do the same on 89.7 , it does nothing. I changed ...
3
votes
1answer
345 views

GPIO affected by audio playback

I recently found the PiFm project which sends a FM signal through a GPIO pin to effectively create a FM transmitter out of the Pi. A problem arises when you do a normal playback of a .wav audio ...