crisstel.ro Raspberry PI – Emițător FM radio În acest tutorial vei descoperi cum se poate transforma placa Raspberry PI într-un emițător FM. Poți asculta melodiile preferate pe o distanta relativ scurtă în jurul plăcii (câțiva zeci de metri) iar pentru a realiza acest lucru este nevoie de o antena Antena va fi un fir lung de 20 cm care se conectează la pinul GPIO4 sau pinul 7 ar trebui să dureze mai puțin de o jumătate de oră pentru a-ți configura propria stație de emisie FM și a emite într-o zonă locală ar trebui să poți acoperi o suprafață de 50 m rază care ar trebui să fie suficientă pentru a fi transmisă spre exemplu în școală

Raspberry PI – Emițător FM

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Emițător FM

În acest tutorial vei descoperi cum se poate transforma placa dezvoltare Raspberry PI într-un emițător FM. Poți asculta melodiile preferate pe o distanta relativ scurtă în jurul plăcii (câțiva zeci de metri) iar pentru a realiza acest lucru este nevoie de o antena. Antena va fi un fir lung de 20 cm care se conectează la pinul GPIO4 sau pinul 7.

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Destul de surprinzător, cu ajutorul Raspberry Pi, ar trebui să dureze mai puțin de o jumătate de oră pentru a-ți configura propria stație de emisie FM și a emite într-o zonă locală. Cu ajutorul unei antene corespunzătoare, ar trebui să poți acoperi o suprafață de 50 m rază care ar trebui să fie suficientă pentru a fi transmisă spre exemplu în școală.

Loghează-te la placa prin SSH și execută următoarele comenzi:

  1. Creeaza fisierul pifm: mkdir pifm ;
  2. Schimba locatia: cd pifm;
  3. Descarca arhiva care contine codul sursa si fisierul executabil: sudo wget http://www.icrobotics.co.uk/wiki/images/c/c3/Pifm.tar.gz ;
  4. Dezarhiveaza fisierul: sudo tar -xzvf Pifm.tar.gz ;
  5. Executa programul specificand melodia (sound.wav) si frecventa (100.0 Mhz) sudo ./pifm sound.wav 100.0

Din acest moment, placa dezvoltare Raspberry PI a început să transmită pe frecventa 100.0 Mhz melodia sound.wav. Pornește aparatul de radio (sau telefonul mobil dacă are aceasta funcție) și schimba frecventa acestuia la 100 Mhz….

Conținutul acestui articol este în format PDF pus la dispoziție de specialiștii RoboFun.ro. Pentru a vizualiza apăsați butonul Preview iar pentru a descărca butonul Download.

Raspberry PI – Emițător FM

  • În acest tutorial vei descoperi cum se poate transforma placa Raspberry PI într-un emițător FM. Poți asculta melodiile preferate pe o distanta relativ scurta în jurul plăcii (câțiva zeci de metri) iar pentru a realiza acest lucru este nevoie de o antena.Antena va fi un fir lung de 20 cm care se conecteaza la pinul GPIO4 sau pinul 7, din imaginea de mai jos. Asa arata antena conectata la placa Raspberry PI:Dupa ce ai conectat antena urmeaza sa conectezi alimentatorul de 5V si cablul de retea. Logheaza-te la placa prin SSH si executa urmatoarele comenzi: 1. Creeaza fisierul pifm: mkdir pifm 2. Schimba locatia: cd pifm 3. Descarca arhiva care contine codul sursa si fisierul executabil: sudo wget Dezarhiveaza fisierul:sudo tar -xzvf Pifm.tar.gz 5. Executa programul specificand melodia (sound.wav) si frecventa (100.0 Mhz) sudo ./pifm sound.wav 100.0 Din acest moment, placa Raspberry PI a inceput sa transmita pe frecventa 100.0 Mhz melodia sound.wav. Porneste aparatul de radio (sau telefonul mobil daca are aceasta functie) si schimba frecventa acestuia la 100 Mhz.  

    Citește și:

    https://crisstel.ro/cum-putem-partaja-fisiere-in-retea-utilizand-o-placa-raspberry-pi/ https://crisstel.ro/wifi-car-reloaded-partea-i/ https://crisstel.ro/clouds-lights/

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