IoT made easy @ SITCON x HK

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QBUSJDLTUXTMJEFT "CPVU+FSFNZ ˙ #BDLFOE%FWFMPQFS ˙ 4*5$0/UX%FQVUZ%JSFDUPSPG"HFOEB$PNNJUUFF ˙ ,1.(5BJXBO*5"EWJTPSZ*OUFSO ˙ 5BJXBO5FDI
/5645 ˙ IUUQQBUSJDLTUX 2

QBUSJDLTUXTMJEFT 0VUMJOF ˙ $PNNVOJDBUJPOXJUI#-&EFWJDF ˙ 8SBQQJOHVQXJUI/PEFKT ˙ 'FFEJUUP8FCTPDLFU ˙ $POOFDUJOHUP.VMUJQMF%FWJDF
˙ 5SPVCMFTIPPUJOH ˙ "EEJUJPOBM*OTUBMMJOHPO.BD049 ˙ "EEJUJPOBM3FBEJOH23$PEFXJUI[CBS 3

QBUSJDLTUXTMJEFT 8IZ#-& ˙ *UJUDVSSFOUMZUSFOEJOHJO5BJXBO ˙ :PVSQSPGFTTPSMJLFTJU 4

QBUSJDLTUXTMJEFT 8IZ#-& ˙ *UJUDVSSFOUMZUSFOEJOHJO5BJXBO ˙ :PVSQSPGFTTPSMJLFTJU ˙ )FMJLFTCJHEBUBNPSF 5

QBUSJDLTUXTMJEFT 0CKFDUJWFT ˙ 6OEFSTUBOEJOH#-&QSPUPDPMGBTUFS ˙ #VJMEZPVSQSPKFDURVJDLMZ ˙ 6TF/PEFKTOPUKBWB 3FDPNNFOETCZZPVS QSPGFTTPS
6

Introduction

QBUSJDLTUXTMJEFT 3FRVJSFNFOU ˙ 3BTQCFSSZ1J #VJMUJOCMVFUPPUI ˙ CMVF[ESJWFS ˙ 5*4FOTPSUBH$$PS$$
9

QBUSJDLTUXTMJEFT 5*4FOTPSUBH $$ ˙ *35FNQFSBUVSF ˙ "DDFMFSPNFUFS ˙ )VNJEJUZ ˙
4JNQMF,FZ ˙ .BHOFUPNFUFS ˙ #BSPNFUSJD1SFTTVSF ˙ (ZSPTDPQF ˙ -VYPNFUFS ˙ *0 $$ ˙ *35FNQFSBUVSF ˙ "DDFMFSPNFUFS ˙ )VNJEJUZ ˙ 4JNQMF,FZ ˙ .BHOFUPNFUFS ˙ #BSPNFUSJD1SFTTVSF ˙ (ZSPTDPQF 10

QBUSJDLTUXTMJEFT 4JNQMF,FZ ˙ 5XPCVUUPOTPOUIFUBH ˙ 3FDFJWFTTJHOBMXIJMFQSFTTFE *ODMVEJOHCPUI QSFTTFE 11

QBUSJDLTUXTMJEFT $$*0 ˙ %JFSFOU$PMPS-&% ˙ #V[[FS 12

QBUSJDLTUXTMJEFT *OTUBMM#MVF[%SJWFS ˙ %FQFOEFODZ ˙ TVEPBQUHFUJOTUBMMMJCVTCEFWMJCECVTEFWMJCHMJC EFWMJCVEFWEFWMJCJDBMEFWMJCSFBEMJOFEFWMJCCMVFUPPUI EFW ˙ *OTUBMM
˙ XHFUXXXLFSOFMPSHQVCMJOVYCMVFUPPUI CMVF[UBSY[ ˙ DPOHVSFEJTBCMFTZTUFNE ˙ NBLF ˙ TVEPNBLFJOTUBMM 13

QBUSJDLTUXTMJEFT 5VSOPOCMVFUPPUIJOUFSGBDF hciconfig hciconfig hci0 up 14

QBUSJDLTUXTMJEFT 5FTU$POOFDUJPO sudo hcitool lescan gatttool -b [Address] -I 15

Communication with BLE device

QBUSJDLTUXTMJEFT ("551SPUPDPM [78:A5:04:19:59:B9][LE]> connect Attempting to connect to 78:A5:04:19:59:B9 Connection
successful 17

QBUSJDLTUXTMJEFT ("551SPUPDPM # Enable Humidity Sensor Service [78:A5:04:19:59:B9][LE]> char-write-cmd 0x3f
01 # Enable Notification [78:A5:04:19:59:B9][LE]> char-write-cmd 0x3c 01:00 Notification handle = 0x003b value: 38 6c be 84 Notification handle = 0x003b value: 38 6c be 84 ... http://processors.wiki.ti.com/images/a/a8/BLE_SensorTag_GATT_Server.pdf 18

QBUSJDLTUXTMJEFT 1SPDFTTJOH7BMVF var buffer = new Buffer([0x38, 0x6c, 0xbe, 0x84]);
var temperature = -46.85 + 175.72 / 65536.0 * buffer.readUInt16LE(0); var humidity = -6.0 + 125.0 / 65536.0 * (buffer.readUInt16LE(2) & ~0x0003); 19

QBUSJDLTUXTMJEFT 1SPDFTTJOH7BMVF ˙ 4BNQMF+4$PEF ˙ IUUQTHJUIVCDPNTBOEFFQNJTUSZOPEF TFOTPSUBHCMPCNBTUFSMJCDDKT ˙ 4QFDTBOE%PDVNFOUBUJPO ˙
IUUQQSPDFTTPSTXJLJUJDPNJOEFYQIQ 4FOTPS5BH@6TFS@(VJEF 20

Wrapping up with Node.js

QBUSJDLTUXTMJEFT *OTUBMM1BDLBHF sudo apt-get install nodejs npm sudo npm -g
install npm node-gyp npm install sensortag IUUQTHJUIVCDPNTBOEFFQNJTUSZOPEFTFOTPSUBH 22

QBUSJDLTUXTMJEFT OPEFTFOTPSUBH ˙ %FQFOETPOOPCMF /PEFKT#-& ˙ 8SBQVQBMMGFBUVSFTGPSBNPSFDMFBSDPEF 23

QBUSJDLTUXTMJEFT 3VO5FTU node test.js node test-cc2650-io.js 24

QBUSJDLTUXTMJEFT 1SPDFEVSF sensortag.discover(function(tag) { tag.connectAndSetUp(function(error) { tag.enableHumidity(function() { tag.notifyHumidity(); });
}); }); 4BZOPUPDBMMCBDLIFMM IUUQTHJUIVCDPNTBOEFFQNJTUSZOPEFTFOTPSUBH 25

QBUSJDLTUXTMJEFT 3FDFJWJOH%BUB tag.on('humidityChange', function (temperature, humidity) { }); 26

Feed it to Websocket

QBUSJDLTUXTMJEFT .BQUBHUPHMPCBM var _tag = {}; function enableService(error) { _tag[tag.uuid]
= tag; 28

QBUSJDLTUXTMJEFT XTGVODUJPO router.ws('/humidity/:uuid', function(ws, req) { _tag[uuid].on('humidityChange', function (temperature, humidity)
{ var obj = {}; obj[uuid] = { temperature: temperature, humidity: humidity }; ws.send(JSON.stringify(obj));; 29

QBUSJDLTUXTMJEFT OPUJGZEFWJDFTUBUVT function tagDiscovery(tag) { tag.on('disconnect', function() { // Remove
Property delete device_info[tag.uuid]; // Emit Disconnected Event events.emit('device_disconnect'); 30

QBUSJDLTUXTMJEFT OPUJGZEFWJDFTUBUVT var EventEmitter = require('events').EventEmitter, events = new EventEmitter();
router.ws('/connected', function(ws, req) { events.on('device_disconnect', function() { ws.send(JSON.stringify(device_info)); 31

Connecting to Multiple Device

QBUSJDLTUXTMJEFT 3VOUIFFYBNQMFDPEF 33

QBUSJDLTUXTMJEFT "OEJUXJMMOPUXPSL 34

QBUSJDLTUXTMJEFT 5SJDL ˙ %JTDPWFSUBH ˙ 4UPQEJTDPWFSXIJMFDPOOFDUJOH ˙ 3FTVNFEJTDPWFSZPODPOOFDUFEBOE EJTDPOOFDUFE 35

QBUSJDLTUXTMJEFT 4BNQMF$PEF ˙ IUUQTHJUIVCDPNKFSFNZ4FOTPSUBH 8FCTPDLFU 36

QBUSJDLTUXTMJEFT -JWF%FNP 37

Troubleshooting

QBUSJDLTUXTMJEFT 5SPVCMF*OEFY ˙ 31*EJTDPOOFDUFWFOUDBVTFTIBOH ˙ OPCMFXBSOJOHEVSJOHDPOOFDUJPOQSPDFTT ˙ $BOOPUFOBCMFEFWJDFTFSWJDF ˙ #-&"EESFTTVOLOPXOPO049
˙ .BYJNVNEFWJDF 39

QBUSJDLTUXTMJEFT 31*EJTDPOOFDUFWFOUDBVTFTIBOH ˙ ,OPXOJTTVF VOTPMWFE ˙ IUUQTHJUIVCDPNTBOEFFQNJTUSZOPCMFJTTVFT ˙ %JTDPOOFDUFELFZXBTQSFTTFEEVSJOHDPOOFDUJPO NBZ
DBVTFIBOHBOESFGVTFUPDPOOFDUBHBJO ˙ 8PSLBSPVOE ˙ .BOVBM3FTUBSU/PEFKTQSPDFTT 40

QBUSJDLTUXTMJEFT OPCMFXBSOJOHEVSJOHDPOOFDUJPO QSPDFTT ˙ )BQQFOT SBOEPNMZ CFGPSF DPOOFDU"OE4FU6Q.F ˙
8PSLBSPVOE ˙ DBUDIDPOTPMFXBSOGVODUJPO NTH JGOPCMF XBSOJOHBQQFBSTUIFOSFTUBSUOPEFKTQSPDFTT 41

QBUSJDLTUXTMJEFT $BOOPUFOBCMFEFWJDFTFSWJDF ˙ 4PNFUJNFT "GUFSDPOOFDU"OE4FU6Q.F UIF EFWJDFTFSWJDFXPOUFOBCMF ˙ 8PSLBSPVOE ˙
4FUVQBTFU5JNFPVU XBUDIEPHBOEXBJU TFDPOET*GTFSWJDFOPUFOBCMFECZUIBUUJNF UBHEJTDPOOFDU 42

QBUSJDLTUXTMJEFT #-&BEESFTTVOLOPXOPO049 ˙ $BVTFCZSTUUJNFDPOOFDU 43

Additional: Installing on Mac OSX

QBUSJDLTUXTMJEFT ,FZQPJOU ˙ CMVFUPPUIIDJTPDLFUEPOPUTVQQPSUEBSXJO ˙ JOTUBMM9DPEF ˙ OQNJOTUBMMYMDDPOOFDUJPOCQMJTUQBSTFS ˙ /PCMVFUPPUILUFYUNPEJDBUJPO
45

QBUSJDLTUXTMJEFT 4FOTPSUBH0493FNPUF ˙ 6TJOH4FOTPSUBHBTBLFZOPUFSFNPUF ˙ *BNDVSSFOUMZVTJOH ˙ IUUQTHJUIVCDPNKFSFNZ4FOTPSUBH 0493FNPUF 46

QBUSJDLTUXTMJEFT "EEJEJPOUBM## ˙ $POUSPMMJOH4UBSXBST##VTJOH/PEFKT 47

Additional: Reading QR Code with zbar

QBUSJDLTUXTMJEFT $IPPTFUIFSJHIUDBNFSB ˙ 31J$BNFSBXJMMOPUXPSL ˙ 6TF64#XFCDBNJOTUFBE -PHJUFDI$ ˙ 31*NVTUBVUPMPHJOUPEFTLUPQ
[CBSCVH 50

QBUSJDLTUXTMJEFT *OTUBMMBOE5FTU ˙ TVEPBQUHFUJOTUBMM[CBSUPPMTQZUIPO[CBS ˙ [CBSDBNEFWWJEFP 51

Thank you

IoT made easy @ SITCON x HK

IoT made easy @ SITCON x HK

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