{"id":39479,"date":"2019-10-31T22:33:41","date_gmt":"2019-10-31T19:33:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/5-sposobov-poleznogo-ispolzovaniya-raspberry-pi\/"},"modified":"2019-10-31T22:33:41","modified_gmt":"2019-10-31T19:33:41","slug":"5-sposobov-poleznogo-ispolzovaniya-raspberry-pi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/administrirovanie\/5-sposobov-poleznogo-ispolzovaniya-raspberry-pi","title":{"rendered":"5 na\u010dina korisnog kori\u0161tenja Raspberry Pi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Pozdrav, Habr.<\/p>\n<p>Vjerojatno gotovo svatko ima Raspberry Pi kod ku\u0107e, a riskiram pretpostaviti da mnogi od njih le\u017ee neiskori\u0161teni. No, Raspberry je ne samo vrijedan materijal, ve\u0107 i prili\u010dno mo\u0107an fanless ra\u010dunalnik s Linuxom. Danas \u0107emo pogledati korisne mogu\u0107nosti Raspberry Pi-a koje ne zahtijevaju pisanje koda. <br \/>\n<img decoding=\"async\" alt=\"5 na\u010dina korisnog kori\u0161tenja Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/e69119cc5036df2ca55ee5cea97fe30d.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nZa one koje zanima, detalji su ispod. \u010clanak je namijenjen po\u010detnicima.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<i>Napomena<\/i>: \u010dlanak je namijenjen po\u010detnicima, ali koji imaju barem osnovno razumijevanje \u0161to je IP adresa, kako se povezati na Raspberry Pi putem SSH koriste\u0107i putty ili neki drugi terminal, i kako ure\u0111ivati datoteke koriste\u0107i nano ure\u0111iva\u010d. Kao eksperiment, ovaj put ne\u0107u \"optere\u0107ivati\" \u010ditatelje Python kodom, programiranja ovdje ne\u0107e biti. Za sve \u0161to slijedi bit \u0107e dovoljno koristiti samo naredbenu liniju. Koliko je takav format tra\u017een, pratiti \u0107u prema ocjenama teksta.<\/p>\n<p>Naravno, ne\u0107u razmatrati potpuno o\u010dite stvari poput FTP poslu\u017eitelja ili mre\u017enih dijeljenja. Ispod sam poku\u0161ao istaknuti ne\u0161to korisno i originalno.<\/p>\n<p>Prije nego \u0161to po\u010dnemo s instalacijom, va\u017ean <b>savjet<\/b>: odgovaraju\u0107a napajanja (preporu\u010dljivo je koristiti originalno s 2.5A, a ne noname punja\u010d od telefona) i hladnjak za procesor iznimno su va\u017eni za stabilan rad Raspberry Pi-a. Bez toga, Raspberry mo\u017ee zablokirati, mogu se pojaviti pogre\u0161ke pri kopiranju datoteka itd. Opasnost od takvih pogre\u0161aka je u tome \u0161to se pojavljuju samo povremeno, primjerice pri vrhunskom optere\u0107enju CPU-a ili tijekom zapisivanja velikih datoteka na SD karticu.<\/p>\n<p>Prije instalacije bilo kojih komponenti, po\u017eeljno je a\u017eurirati sustav, ina\u010de stare adrese za apt naredbu mo\u017eda ne\u0107e raditi:<\/p>\n<pre><code class=\"bash\">sudo apt-get update<\/code><\/pre>\n<p>\nSada mo\u017eemo krenuti s instalacijom i postavljanjem.<\/p>\n<h2>1. WiFi pristupna to\u010dka<\/h2>\n<p>\nRaspberry Pi se lako mo\u017ee pretvoriti u be\u017ei\u010dnu pristupnu to\u010dku, a ni\u0161ta dodatno ne treba kupiti, WiFi je ve\u0107 \"na brodu\". Za to je potrebno instalirati 2 komponente: hostapd (daemon za pristupnu to\u010dku) i dnsmasq (DNS\/DHCP poslu\u017eitelj).<\/p>\n<p>Instaliramo dnsmasq i hostapd:<\/p>\n<pre><code class=\"bash\">sudo apt-get install dnsmasq hostapd<\/code><\/pre>\n<p>\nPostavljamo stati\u010dku IP adresu koju \u0107e Raspberry Pi imati u WiFi mre\u017ei. Za to trebate urediti datoteku dhcpcd.conf tako da upi\u0161ete naredbu <i>sudo nano \/etc\/dhcpcd.conf<\/i>. U datoteku treba dodati sljede\u0107e retke:<\/p>\n<pre><code class=\"bash\">interface wlan0\n  static ip_address=198.51.100.100\/24\n  nohook wpa_supplicant\n<\/code><\/pre>\n<p>\nKao \u0161to se mo\u017ee vidjeti, u WiFi mre\u017ei na\u0161 Raspberry Pi \u0107e imati adresu 198.51.100.100 (to je va\u017eno zapamtiti ako na njemu bude radio neki poslu\u017eitelj \u010dija adresa \u0107e trebati biti unesena u preglednik).<\/p>\n<p>Sljede\u0107e, moramo aktivirati IP proslje\u0111ivanje, za \u0161to izvr\u0161avamo naredbu <i>sudo nano \/etc\/sysctl.conf<\/i> i otkomentiramo redak <i>net.ipv4.ip_forward=1<\/i>.<\/p>\n<p>Sada je potrebno postaviti DHCP poslu\u017eitelj \u2014 on \u0107e dodjeljivati IP adrese povezanim ure\u0111ajima. Unosimo naredbu <i>sudo nano \/etc\/dnsmasq.conf<\/i> i dodajemo sljede\u0107e retke:<\/p>\n<pre><code class=\"bash\">interface=wlan0\ndhcp-range=198.51.100.1,198.51.100.99,255.255.255.0,24h\n<\/code><\/pre>\n<p>\nKao \u0161to se mo\u017ee vidjeti, povezani ure\u0111aji \u0107e imati IP adrese u rasponu od 198.51.100.1 do 198.51.100.99.<\/p>\n<p>Nap finally, vrijeme je za postavljanje Wi-Fi-a. Ure\u0111ujemo datoteku <i>\/etc\/default\/hostapd<\/i> i unosimo redak <i>DAEMON_CONF=\u00bb\/etc\/hostapd\/hostapd.conf\u00ab<\/i>. Sada \u0107emo urediti datoteku hostapd.conf, unose\u0107i naredbu <i>sudo nano \/etc\/hostapd\/hostapd.conf<\/i>.<br \/>\nUnosimo parametre pristupne to\u010dke:<\/p>\n<pre><code class=\"bash\">interface=wlan0\ndriver=nl80211\nssid=Raspberry Pi\nhw_mode=g\nchannel=7\nwmm_enabled=0\nmacaddr_acl=0\nauth_algs=1\nignore_broadcast_ssid=0\nwpa=2\nwpa_passphrase=12345678\nwpa_key_mgmt=WPA-PSK\nwpa_pairwise=TKIP\nrsn_pairwise=CCMP<\/code><\/pre>\n<p>\nOvdje je va\u017eno obratiti pozornost na parametre \u201essid\u201c (ime pristupne to\u010dke), \u201ewpa_passphrase\u201c (lozinka), \u201echannel\u201c (broj kanala) i \u201ehw_mode\u201c (na\u010din rada, a = IEEE 802.11a, 5 GHz, b = IEEE 802.11b, 2.4 GHz, g = IEEE 802.11g, 2.4 GHz). Na\u017ealost, automatskog izbora kanala nema, pa \u0107emo morati sami odabrati najmanje zauzeti WiFi kanal.<\/p>\n<p><b>Va\u017eno<\/b>: u ovom testnom primjeru navedena je lozinka 12345678, dok realna pristupna to\u010dka trebala bi koristiti ne\u0161to slo\u017eenije. Postoje programi koji provode napad brute force na lozinke, a pristupnu to\u010dku sa jednostavnom lozinkom mogu hakirati. Tako\u0111er, dijeljenje interneta s neovla\u0161tenim korisnicima mo\u017ee imati posljedice prema va\u017ee\u0107im zakonima.<\/p>\n<p>Sve je spremno, mo\u017eemo aktivirati sve usluge. <\/p>\n<pre><code class=\"bash\">sudo systemctl unmask hostapd\nsudo systemctl enable hostapd\nsudo systemctl start hostapd\nsudo systemctl reload dnsmasq<\/code><\/pre>\n<p>\nSada bismo ve\u0107 trebali vidjeti novu WiFi pristupnu to\u010dku na popisu mre\u017ea. No kako bi se Internet pojavilo, potrebno je aktivirati proslje\u0111ivanje paketa s Ethernet-a na WLAN, za \u0161to unosimo naredbu <i>sudo nano \/etc\/rc.local<\/i> i dodajemo redak za postavljanje iptables:<\/p>\n<pre><code class=\"bash\">sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE\n<\/code><\/pre>\n<p>\nSada je to sve. Ponovno pokre\u0107emo Raspberry Pi, i ako je sve ispravno u\u010dinjeno, mo\u017eemo vidjeti pristupnu to\u010dku i povezati se s njom.<\/p>\n<p><img decoding=\"async\" alt=\"5 na\u010dina korisnog kori\u0161tenja Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/fe586866e572ea9950b5ad5f6fcfe9e7.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nKao \u0161to se mo\u017ee vidjeti, brzina nije lo\u0161a i kori\u0161tenje ovakvog WiFi-a je sasvim podno\u0161ljivo.<\/p>\n<p>Usput, mali <b>savjet<\/b>: promjena mre\u017enog imena Raspberry Pi mo\u017ee se izvr\u0161iti unosom naredbe <i>sudo raspi-config<\/i>. Zadano je zadano ime (surprise:) raspberrypi. To je vjerojatno op\u0107e poznato. Me\u0111utim, nisu svi svjesni da je to ime dostupno i u lokalnoj mre\u017ei, ali mu treba dodati \u00ab.local\u00bb. Na primjer, mo\u017eete se prijaviti na Raspberry Pi putem SSH-a tako da upi\u0161ete naredbu <i>putty pi@raspberrypi.local<\/i>. Ima jedan detalj: ovo radi na Windowsu i Linuxu, ali ne i na Androidu \u2014 tamo \u0107ete jo\u0161 uvijek morati ru\u010dno upisivati IP adresu.<\/p>\n<h2>2. Medijski poslu\u017eitelj<\/h2>\n<p>\nPostoji 1001 na\u010din za izradu medijskog poslu\u017eitelja na Raspberry Pi, ali razmotrit \u0107u samo najjednostavniji. Pretpostavimo da imamo svoju omiljenu kolekciju MP3 datoteka i \u017eelimo da ona bude dostupna u lokalnoj mre\u017ei za sve medijske ure\u0111aje. Instalirat \u0107emo MiniDLNA server na Raspberry Pi, koji to mo\u017ee u\u010diniti za nas. <\/p>\n<p>Za instalaciju upi\u0161ite naredbu <i>sudo apt-get install minidlna<\/i>. Nakon toga potrebno je postaviti konfiguraciju unosom naredbe <i>sudo nano \/etc\/minidlna.conf<\/i>. Tamo je potrebno dodati samo jedan redak, koji pokazuje put do na\u0161ih datoteka: <i>media_dir=\/home\/pi\/MP3<\/i> (put, naravno, mo\u017ee biti druga\u010diji). Nakon zatvaranja datoteke, ponovno pokre\u0107emo servis:<\/p>\n<p><i>sudo systemctl restart minidlna<\/i><\/p>\n<p>Ako smo sve napravili ispravno, dobit \u0107emo gotov medijski poslu\u017eitelj u lokalnoj mre\u017ei, s kojeg mo\u017eemo slu\u0161ati glazbu putem stolnog WiFi radija ili putem VLC Player-a na Androidu:<\/p>\n<p><img decoding=\"async\" alt=\"5 na\u010dina korisnog kori\u0161tenja Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/07991c505022aa823c51bb7176540d90.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>Savjet<\/b>: prenos datoteka na Raspberry Pi vrlo je jednostavan uz WinSCP \u2014 ovaj program omogu\u0107ava rad s mapama RPi jednako lako kao i s lokalnim.<\/p>\n<p><img decoding=\"async\" alt=\"5 na\u010dina korisnog kori\u0161tenja Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/7ebb1fd564575179d774ebebb61aecac.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>3. SDR prijemnik<\/h2>\n<p>\nAko imamo RTL-SDR ili SDRPlay prijemnik, mo\u017eemo ga koristiti s Raspberry Pi uz program GQRX ili CubicSDR. To \u0107e omogu\u0107iti autonomni i tihi SDR prijemnik, sposoban raditi \u010dak 24 sata dnevno.<\/p>\n<p>Ispri\u010davam se zbog kvalitete snimke sa televizora:<\/p>\n<p><img decoding=\"async\" alt=\"5 na\u010dina korisnog kori\u0161tenja Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/8f466f8eb64a37c383861b5dd791c81c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nUz RTL-SDR ili SDRPlay mogu\u0107e je primati razli\u010dite radio signale s frekvencijom do 1 GHz (\u010dak i malo vi\u0161e). Na primjer, mo\u017eemo slu\u0161ati ne samo obi\u010dan FM radio, ve\u0107 i razgovore pilota ili drugih slu\u017ebi. Usput, radioamateri mogu s Raspberry Pi bez problema primati, dekodirati i slati na poslu\u017eitelj signale <noindex><a rel=\"nofollow\" href=\"https:\/\/www.rtl-sdr.com\/tutorial-setting-up-a-low-cost-qrp-ft8-jt9-wspr-etc-monitoring-station-with-an-rtl-sdr-v3-and-raspberry-pi-3\/\">WSPR i drugih digitalnih modova<\/a><\/noindex>. <\/p>\n<p>Detaljna analiza SDR radija nadilazi okvir ovog \u010dlanka, vi\u0161e informacija mo\u017eete prona\u0107i <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450534\/\">ovdje<\/a><\/noindex>. <\/p>\n<h2>4. Poslu\u017eitelj za 'pametnu ku\u0107u'<\/h2>\n<p>\nOni koji \u017eele u\u010diniti svoj dom 'pametnijim' mogu iskoristiti besplatni program OpenHAB. <\/p>\n<p><img decoding=\"async\" alt=\"5 na\u010dina korisnog kori\u0161tenja Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/78d1b38bb45f4705276cf010b63f6927.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTo nije samo program, ve\u0107 cijeli okvir s razli\u010ditim plugin-ima i skriptama, koji omogu\u0107uje upravljanje raznim ure\u0111ajima (Z-Wave, Philips Hue itd.). \u017deljni mogu saznati vi\u0161e na slu\u017ebenoj stranici. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openhab.org\/\">https:\/\/www.openhab.org<\/a><\/noindex>.<\/p>\n<p>Usput, kad smo ve\u0107 spomenuli \"pametnu ku\u0107u\", MQTT poslu\u017eitelj mo\u017ee raditi na Raspberry Pi, a koji mogu koristiti razni lokalni ure\u0111aji.<\/p>\n<h2>5. Klijent za FlightRadar24<\/h2>\n<p>\nAko ste ljubitelj avijacije i \u017eivite u podru\u010dju gdje je pokrivenost FlightRadar-a nedostatna, mo\u017eete pomo\u0107i zajednici i svim putnicima postavljanjem prijemnika kod sebe. Dovoljno je imati RTL-SDR prijemnik i Raspberry Pi. Kao bonus, dobit \u0107ete besplatan pristup Pro ra\u010dunu FlightRadar24.<\/p>\n<p><img decoding=\"async\" alt=\"5 na\u010dina korisnog kori\u0161tenja Raspberry Pi\" src=\"\/wp-content\/uploads\/2019\/10\/84d67383fd6b528315789d2ddfc3f413.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nDetaljne upute <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/408003\/\">ve\u0107 su objavljene<\/a><\/noindex> na Habru.<\/p>\n<h2>Zaklju\u010dak<\/h2>\n<p>\nNaravno, ovdje nije navedeno sve. Raspberry Pi ima prili\u010dnu ra\u010dunalnu mo\u0107 i mo\u017ee se koristiti u raznim zadacima, od retro igra\u010dkih konzola ili videonadzora do prepoznavanja registarskih oznaka ili \u010dak kao usluga za astronomiju. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.instructables.com\/id\/Wireless-All-Sky-Camera\/\">all-sky kamere<\/a><\/noindex> za promatranje meteorita. <\/p>\n<p>Usput, napisana informacija je relevantna ne samo za Raspberry Pi, ve\u0107 i za razne \"klonove\" (Asus Tinkerboard, Nano Pi itd.), sve programe vjerojatno \u0107e raditi i tamo.<\/p>\n<p>Ako \u0107e publika biti zainteresirana (\u0161to \u0107e se odrediti na temelju ocjena \u010dlanka), temu \u0107e biti mogu\u0107e nastaviti. <\/p>\n<p>I kao obi\u010dno, svima uspje\u0161ne eksperimente.<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/472778\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0438\u0432\u0435\u0442 \u0425\u0430\u0431\u0440. Raspberry Pi \u043d\u0430\u0432\u0435\u0440\u043d\u043e\u0435 \u0435\u0441\u0442\u044c \u0434\u043e\u043c\u0430 \u043f\u043e\u0447\u0442\u0438 \u0443 \u043a\u0430\u0436\u0434\u043e\u0433\u043e, \u0438 \u0440\u0438\u0441\u043a\u043d\u0443 \u043f\u0440\u0435\u0434\u043f\u043e\u043b\u043e\u0436\u0438\u0442\u044c, \u0447\u0442\u043e \u0443 \u043c\u043d\u043e\u0433\u0438\u0445 \u043e\u043d\u0430 \u0432\u0430\u043b\u044f\u0435\u0442\u0441\u044f \u0431\u0435\u0437 \u0434\u0435\u043b\u0430. \u0410 \u0432\u0435\u0434\u044c Raspberry \u044d\u0442\u043e \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0446\u0435\u043d\u043d\u044b\u0439 \u043c\u0435\u0445, \u043d\u043e \u0438 \u0432\u043f\u043e\u043b\u043d\u0435 \u043c\u043e\u0449\u043d\u044b\u0439 fanless-\u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440 \u0441 Linux. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u043c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u043f\u043e\u043b\u0435\u0437\u043d\u044b\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 Raspberry Pi, \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043a\u043e\u0434 \u043f\u0438\u0441\u0430\u0442\u044c \u043d\u0435 \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u0441\u043e\u0432\u0441\u0435\u043c. \u0414\u043b\u044f \u0442\u0435\u0445 \u043a\u043e\u043c\u0443 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e, \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0441\u0442\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":39480,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-39479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0438\u0432\u0435\u0442 \u0425\u0430\u0431\u0440. 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