ããã«ã¡ã¯ãããã§ãã
ã»ãšãã©ã®äººãèªå®
ã« Raspberry Pi ãæã£ãŠãããå€ãã®äººãããã䜿ããã«ç ãããŠããã®ã§ã¯ãªãããšæããŸãã ããããRaspberry ã¯è²Žéãªæ¯ç®ã§ããã ãã§ãªããLinux ãæèŒããéåžžã«åŒ·åãªãã¡ã³ã¬ã¹ ã³ã³ãã¥ãŒã¿ãŒã§ããããŸãã ä»æ¥ã¯ãã³ãŒãããŸã£ããæžãå¿
èŠããªããRaspberry Pi ã®äŸ¿å©ãªæ©èœãèŠãŠãããŸãã
èå³ã®ããæ¹ã®ããã«ã詳现ã¯ã«ããã®äžã«ãããŸãã ãã®èšäºã¯åå¿è
åãã§ãã
泚æ: ãã®èšäºã¯ãIP ã¢ãã¬ã¹ãšã¯äœãããããŸãã¯ãã®ä»ã®ã¿ãŒããã«ã䜿çšã㊠Raspberry Pi ã« SSH æ¥ç¶ããæ¹æ³ãããã³ nano ãšãã£ã¿ãŒã§ãã¡ã€ã«ãç·šéããæ¹æ³ã«ã€ããŠå°ãªããšãåºæ¬ãç解ããŠããåå¿è
ã察象ãšããŠããŸãã å®éšãšããŠãä»åã¯ãªãŒããŒã« Python ã³ãŒãããããŒããããŸãããããã°ã©ãã³ã°ã¯ãŸã£ããè¡ããŸããã 以äžã®ãã¹ãŠã«ã€ããŠã¯ãã³ãã³ã ã©ã€ã³ã®ã¿ã§ååã§ãã ãã®ãããªåœ¢åŒã®éèŠãã©ã®çšåºŠããã®ããããã¹ãã®èŠç©ãããèŠãŠãããŸãã
ãã¡ãããFTP ãµãŒããŒããããã¯ãŒã¯ ããŒã«ãªã©ã®éåžžã«æçœãªãã®ã«ã€ããŠã¯èæ ®ããŸããã 以äžã§ã¯ãå€ããå°ãªãã䟿å©ã§ç¬åµçãªãã®ã匷調ããŠã¿ãŸããã
äœããã€ã³ã¹ããŒã«ããåã«ãéèŠãªããš ã¢ããã€ã¹: é©åãªé»æº (ç¡åã®æºåž¯é»è©±å é»åšã§ã¯ãªããã§ããã°ãã©ã³ãã® 2.5A é»æº) ãšããã»ããµãŒçšã®ããŒãã·ã³ã¯ã¯ãRaspberry Pi ã®å®å®ããåäœã«ãšã£ãŠéåžžã«éèŠã§ãã ããããªããšãRaspberry ãããªãŒãºãããããã¡ã€ã« ã³ã㌠ãšã©ãŒã衚瀺ããããããå¯èœæ§ããããŸãããã®ãããªãšã©ãŒãçºçããã®ã¯ãCPU è² è·ã®ããŒã¯æã倧ããªãã¡ã€ã«ã SD ã«ãŒãã«æžã蟌ãŸããŠãããšããªã©ãããŸã«ãã衚瀺ãããªãããšã§ãã
ã³ã³ããŒãã³ããã€ã³ã¹ããŒã«ããåã«ãã·ã¹ãã ãæŽæ°ããããšããå§ãããŸããããããªããšãapt ã³ãã³ãã®å€ãã¢ãã¬ã¹ãæ©èœããªããªãå¯èœæ§ããããŸãã
sudo apt-get update
ããã§ãã€ã³ã¹ããŒã«ãšæ§æãéå§ã§ããŸãã
1. WiFiãããã¹ããã
Raspberry Pi ã¯ç°¡åã«ã¯ã€ã€ã¬ã¹ ã¢ã¯ã»ã¹ ãã€ã³ãã«å€ããããšãã§ããWi-Fi ããã§ã«æèŒãããŠãããããäœãè³Œå ¥ããå¿ èŠã¯ãããŸããã ãããè¡ãã«ã¯ãhostapd (ãã¹ã ã¢ã¯ã»ã¹ ãã€ã³ã ããŒã¢ã³ãã¢ã¯ã»ã¹ ãã€ã³ã ãµãŒãã¹) ãš dnsmasq (DNS / DHCP ãµãŒããŒ) ã® 2 ã€ã®ã³ã³ããŒãã³ããã€ã³ã¹ããŒã«ããå¿ èŠããããŸãã
dnsmasq ãš hostapd ãã€ã³ã¹ããŒã«ããŸãã
sudo apt-get install dnsmasq hostapd
Raspberry Pi ã WiFi ãããã¯ãŒã¯äžã§æã€éç IP ã¢ãã¬ã¹ãèšå®ããŸãã ãããè¡ãã«ã¯ã次ã®ã³ãã³ããå ¥åã㊠dhcpcd.conf ãã¡ã€ã«ãç·šéããŸãã sudo nano /etc/dhcpcd.confã 次ã®è¡ããã¡ã€ã«ã«è¿œå ããå¿ èŠããããŸãã
interface wlan0
static ip_address=198.51.100.100/24
nohook wpa_supplicant
ã芧ã®ãšãããWiFi ãããã¯ãŒã¯ã§ã¯ãRaspberry Pi ã®ã¢ãã¬ã¹ã¯ 198.51.100.100 ã«ãªããŸã (ããã¯ãäœããã®ãµãŒããŒãå®è¡ãããŠããå Žåã«èŠããŠããããšãéèŠã§ããããã®ã¢ãã¬ã¹ããã©ãŠã¶ã«å ¥åããå¿ èŠããããŸã)ã
次ã«ãIP 転éãæå¹ã«ããå¿ èŠããããŸãããã®ããã«ã³ãã³ããå®è¡ããŸãã sudo ãã /etc/sysctl.conf ãããŠè¡ã®ã³ã¡ã³ããå€ããŸã net.ipv4.ip_forward = 1.
次ã«ãDHCP ãµãŒããŒãæ§æããå¿ èŠããããŸããDHCP ãµãŒããŒã¯ãæ¥ç¶ãããããã€ã¹ã« IP ã¢ãã¬ã¹ãé åžããŸãã ã³ãã³ããå ¥åããŸã sudo nano /etc/dnsmasq.conf 次ã®è¡ãè¿œå ããŸãã
interface=wlan0
dhcp-range=198.51.100.1,198.51.100.99,255.255.255.0,24h
ã芧ã®ãšãããæ¥ç¶ãããããã€ã¹ã® IP ã¢ãã¬ã¹ã¯ 198.51.100.1 ïœ 198.51.100.99 ã®ç¯å²ã«ãªããŸãã
ããããWi-Fiã®èšå®ã§ãã ãã¡ã€ã«ã®ç·šé /etc/default/hostapd ããã®è¡ã«å
¥åããŠãã ãã DAEMON_CONF="/etc/hostapd/hostapd.conf"ã 次ã®ã³ãã³ããå
¥åããŠãhostapd.conf ãã¡ã€ã«ãç·šéããŸãããã é è€ãã /etc/hostapd/hostapd.conf.
ã¢ã¯ã»ã¹ ãã€ã³ãã®èšå®ãå
¥åããŸãã
interface=wlan0
driver=nl80211
ssid=Raspberry Pi
hw_mode=g
channel=7
wmm_enabled=0
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=12345678
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
ããã§ããã©ã¡ãŒã¿ãssidãïŒã¢ã¯ã»ã¹ãã€ã³ãåïŒããwpa_passphraseãïŒãã¹ã¯ãŒãïŒããchannelãïŒãã£ãã«çªå·ïŒããã³ãhw_modeãïŒåäœã¢ãŒããa = IEEE 802.11aã5 GHzã b = IEEE 802.11 bã2.4 GHzãg = IEEE 802.11gã2.4 GHz)ã æ®å¿µãªãããèªåãã£ã³ãã«éžææ©èœã¯ãªããããæãæ··éã®å°ãªã WiFi ãã£ã³ãã«ãèªåã§éžæããå¿ èŠããããŸãã
ãããéèŠã : ãã®ãã¹ã ã±ãŒã¹ã§ã¯ããã¹ã¯ãŒã㯠12345678 ã§ãããå®éã®ã¢ã¯ã»ã¹ ãã€ã³ãã§ã¯ãããè€éãªãã®ã䜿çšããå¿ èŠããããŸãã èŸæžã䜿ã£ãŠãã¹ã¯ãŒããç·åœãæ»æããããã°ã©ã ããããåçŽãªãã¹ã¯ãŒãã䜿çšããã¢ã¯ã»ã¹ ãã€ã³ãã¯ãããã³ã°ãããå¯èœæ§ããããŸãã ããã§ãããçŸä»£ã®æ³åŸã®äžã§ã€ã³ã¿ãŒããããéšå€è ãšå ±æããããšã¯å°é£ã䌎ãå¯èœæ§ããããŸãã
ãã¹ãŠã®æºåãæŽã£ãã®ã§ããã¹ãŠã®ãµãŒãã¹ãã¢ã¯ãã£ãåã§ããŸãã
sudo systemctl unmask hostapd
sudo systemctl enable hostapd
sudo systemctl start hostapd
sudo systemctl reload dnsmasq
ãããã¯ãŒã¯ã®ãªã¹ãã«æ°ãã WiFi ãããã¹ãããã衚瀺ãããã¯ãã§ãã ãã ããã€ã³ã¿ãŒãããããã®äžã«è¡šç€ºããã«ã¯ãã€ãŒãµããããã WLAN ãžã®ãã±ãã ãªãã€ã¬ã¯ããã¢ã¯ãã£ãã«ããå¿ èŠããããŸãããã®ããã«æ¬¡ã®ã³ãã³ããå ¥åããŸãã é è€ãã/etc/rc.local ãããŠãiptables èšå®è¡ãè¿œå ããŸãã
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
ããã§ãããŸãã Raspberry Pi ãåèµ·åããŸãããã¹ãŠãæ£ããè¡ãããŠããã°ãã¢ã¯ã»ã¹ ãã€ã³ãã衚瀺ãããã¢ã¯ã»ã¹ ãã€ã³ãã«æ¥ç¶ã§ããŸãã
ã芧ã®ãšãããé床ã¯ããã»ã©æªããªãããã®ãããªWiFiã䜿çšããããšã¯ååã«å¯èœã§ãã
ã¡ãªã¿ã«å°ããã®ã¯ ã¢ããã€ã¹: ã³ãã³ããå®è¡ãããšãRaspberry Pi ãããã¯ãŒã¯åãå€æŽã§ããŸãã sudo raspi-configã ããã©ã«ã㯠(é©ã:) raspberrypi ã§ãã ããã¯ããããåžžèã§ãã ãã ãããã®ååãããŒã«ã« ãããã¯ãŒã¯ã§ã䜿çšã§ããããšã誰ããç¥ã£ãŠããããã§ã¯ãããŸããããã.localããè¿œå ããå¿ èŠããããŸãã ããšãã°ã次ã®ã³ãã³ããå ¥åãããšãSSH çµç±ã§ Raspberry Pi ã«ãã°ã€ã³ã§ããŸãã ãã [ã¡ãŒã«ä¿è·]ã 確ãã«ãXNUMX ã€æ³šæç¹ããããŸãããã㯠Windows ãš Linux ã§ã¯æ©èœããŸãããAndroid ã§ã¯æ©èœããŸãããããã§ã IP ã¢ãã¬ã¹ãæåã§å ¥åããå¿ èŠããããŸãã
2. ã¡ãã£ã¢ãµãŒããŒ
Raspberry Pi ã§ã¡ãã£ã¢ ãµãŒããŒãäœæããæ¹æ³ã¯ 1001 éããããŸãããããã§ã¯æãç°¡åãªæ¹æ³ã ãã説æããŸãã ãæ°ã«å ¥ãã® MP3 ãã¡ã€ã«ã®ã³ã¬ã¯ã·ã§ã³ãããããããããŒã«ã« ãããã¯ãŒã¯äžã®ãã¹ãŠã®ã¡ãã£ã¢ ããã€ã¹ã§å©çšã§ããããã«ããããšããŸãã ãããè¡ãããšãã§ãã MiniDLNA ãµãŒããŒã Raspberry Pi ã«é 眮ããŸãã
ã€ã³ã¹ããŒã«ããã«ã¯ã次ã®ã³ãã³ããå ¥åããŸã sudo apt-get install minidlnaã 次ã«ã次ã®ã³ãã³ããå ¥åããŠæ§æãæ§æããå¿ èŠããããŸãã sudo nano /etc/minidlna.confã ãã¡ã€ã«ãžã®ãã¹ã瀺ãè¡ã XNUMX è¡ã ãè¿œå ããå¿ èŠããããŸãã media_dir=/home/pi/MP3 (ãã¡ããããã¹ã¯ç°ãªãå ŽåããããŸã)ã ãã¡ã€ã«ãéããåŸããµãŒãã¹ãåèµ·åããŸãã
sudo systemctl åèµ·å minidlna
ãã¹ãŠãæ£ããè¡ãããŠããã°ãããŒã«ã« ãããã¯ãŒã¯äžã«æ¢è£œã®ã¡ãã£ã¢ ãµãŒããŒãããããããããã¹ã¯ããã WiFi ã©ãžãªãŸã㯠Android ã® VLC ãã¬ãŒã€ãŒçµç±ã§é³æ¥œãåçã§ããŸãã
åè°äŒ: WinSCP ã䜿çšãããšãRaspberry Pi ãžã®ãã¡ã€ã«ã®ã¢ããããŒããéåžžã«äŸ¿å©ã§ãããã®ããã°ã©ã ã䜿çšãããšãããŒã«ã«ã®ãã©ã«ããšåãããã«ç°¡åã« RPi ãã©ã«ããæäœã§ããŸãã
3.SDRåä¿¡æ©
RTL-SDR ãŸã㯠SDRPlay ã¬ã·ãŒããŒãããå Žåã¯ãGQRX ãŸã㯠CubicSDR ããã°ã©ã ã䜿çšã㊠Raspberry Pi ã§ããã䜿çšã§ããŸãã ããã«ãããXNUMX æé皌åããèªåŸçã§éã㪠SDR ã¬ã·ãŒããŒã䜿çšã§ããããã«ãªããŸãã
ãã¬ãç»é¢ã®ã¹ã¯ãªãŒã³ã·ã§ããã®å質ã«ã€ããŠãè©«ã³ããŸãã
RTL-SDR ãŸã㯠SDRPlay ãå©çšãããšãæ倧 1 GHz (ããããå°ãé«ãåšæ³¢æ°) ã®ããŸããŸãªç¡ç·ä¿¡å·ãåä¿¡ã§ããŸãã ããšãã°ãéåžžã®FMã©ãžãªã ãã§ãªãããã€ãããã®äŒè©±ãä»ã®ãµãŒãã¹ãèãããšãã§ããŸãã ã¡ãªã¿ã«ãã¢ããã¥ã¢ç¡ç·å®¶ã¯ Raspberry Pi ã䜿çšããŠä¿¡å·ãåä¿¡ããã³ãŒããããµãŒããŒã«éä¿¡ããããšãã§ããŸãã
SDR ç¡ç·ã®è©³çŽ°ãªèª¬æã¯ãã®èšäºã®ç¯å²ãè¶
ããŠããŸãã詳现ã¯ãã¡ããã芧ãã ããã
4.ãã¹ããŒãããŒã ãçšãµãŒããŒ
èªå® ãããã¹ããŒãã«ããã人ã¯ãç¡æã® OpenHAB ããã°ã©ã ã䜿çšã§ããŸãã
ããã¯åãªãããã°ã©ã ã§ã¯ãªããããŸããŸãªããã€ã¹ (Z-WaveãPhilips Hue ãªã©) ãå¶åŸ¡ã§ããããŸããŸãªãã©ã°ã€ã³ãã¹ã¯ãªãããåãããã¬ãŒã ã¯ãŒã¯å
šäœã§ãã ãåžæã®æ¹ã¯ãµã€ãå€ã§ããã«è©³ããåŠã¶ããšãã§ããŸã
ãšããã§ããã¹ããŒãããŒã ãã«ã€ããŠè©±ããŠããã®ã§ãRaspberry Pi ã¯ããŸããŸãªããŒã«ã«ããã€ã¹ã§äœ¿çšã§ãã MQTT ãµãŒããŒãå®è¡ããå¯èœæ§ããããŸãã
5. FlightRadar24 ã®ã¯ã©ã€ã¢ã³ã
ããªããèªç©ºæ奜家ã§ãFlightRadar ã®åä¿¡ç¯å²ãçãå°åã«äœãã§ããå Žåã¯ãåä¿¡æ©ãèšçœ®ããããšã§ã³ãã¥ããã£ãšãã¹ãŠã®æ è¡è ãå©ããããšãã§ããŸãã å¿ èŠãªã®ã¯ãRTL-SDR ã¬ã·ãŒããŒãš Raspberry Pi ã ãã§ãã ããŒãã¹ãšããŠãFlightRadar24 Pro ã¢ã«ãŠã³ãã«ç¡æã§ã¢ã¯ã»ã¹ã§ããŸãã
詳ãã説æ
ãŸãšã
ãã¡ãããããã«ãã¹ãŠãèšèŒãããŠããããã§ã¯ãããŸããã Raspberry Pi ã¯é«ãåŠçèœåãåããŠãããã¬ãããªã²ãŒã æ©ããããªç£èŠãããã³ããŒãã¬ãŒãèªèãããã«ã¯å€©æåŠçšã®ãµãŒãã¹ã«è³ããŸã§ãããŸããŸãªã¿ã¹ã¯ã«äœ¿çšã§ããŸãã
ã¡ãªã¿ã«ãæžãããå 容ã¯Raspberry Piã ãã§ãªããããŸããŸãªãã¯ããŒã³ãïŒAsus TinkerboardãNano Piãªã©ïŒã«ãé¢é£ããŠããããããããã¹ãŠã®ããã°ã©ã ãããã§ãåäœããŸãã
èŠèŽè ãèå³ãæã£ãŠããå Žå (èšäºã®è©äŸ¡ã«ãã£ãŠæ±ºãŸããŸã)ããããã¯ãç¶ããããšãã§ããŸãã
ãããŠãã€ãã®ããã«ãçããã®å¹žéãç¥ããŸãã
åºæïŒ habr.com