I-DIY, njengoko iWikipedia isitsho, kudala iyinkcubeko engaphantsi. Kweli nqaku ndifuna ukuthetha ngeprojekthi yam ye-DIY yenzwa encinci engenazingcingo ezininzi, kwaye oku kuya kuba ligalelo lam elincinci kule subculture.
Ibali lale projekthi liqale ngomzimba, livakala ngathi libudenge, kodwa yindlela eyaqala ngayo le projekthi. Ityala lathengwa kwiwebhusayithi ye-Aliexpress, kufuneka kuqatshelwe ukuba umgangatho weplastiki yokuphosa le meko ihle kakhulu. Emva kwembalelwano emfutshane kunye nomthengisi, umzobo wathunyelwa ngeposi kwaye iprojekthi yaqala.
Umzobo ngokwawo wawulinganiswe kakubi kakhulu kwaye isiqingatha semilinganiselo yemida, i-cutouts kunye nemingxuma yezobuchwepheshe yebhodi yesekethe eprintiweyo yexesha elizayo kwafuneka yenziwe ngokusebenzisa i-caliper. Emva kokufumana yonke imilinganiselo yangaphakathi yecala, kwacaca ukuba i-chip yerediyo iya kufuneka "ihanjiswe" ngokuthe ngqo kwibhodi yesiphaluka eprintiweyo, ekubeni ukuphakama ukusuka phezulu kwebhodi yesekethe eprintiweyo ukuya kwindawo yangaphakathi yecala. I-1.8 mm, kunye nobude obuncinane bomndilili ogqityiweyo wemodyuli yerediyo idla ngokuba yi-2 mm (ngaphandle kwesikrini).
I-nRF52 SoC kwiphakheji ye-QFN48 yakhethwa kwinzwa. Kule meko kuluhlu lwe-nRF52, iNordic ineenketho ezintathu: nRF52810, nRF52811 (entsha), nRF52832. Iiparamitha zeChip: 64 MHz Cortex-M4, 2.4 GHz transceiver, 512/256 KB Flash, 64/32 KB RAM ye-nRF52832 kunye ne-192 KB Flash, 24 KB RAM ye-nRF52810, nRF52811, i-multi-protocol chips, inkxaso yeBluetooth ye-Bluetooth Low i-mesh, i-ESB, i-ANT, kunye ne-nRF52811, ngaphezu koku ngasentla, nayo ineZigbee kunye ne-Thread, kunye ne-Bluetooth Direction Finding.
Ndithathe isigqibo sokwenza i-sensor ngokwayo i-multi-sensory ukuze ikwazi ukusetyenziselwa imisebenzi eyahlukeneyo. Ngenxa yesi sizathu, ukucwangciswa kwe-chip kufuneka kwenziwe ngokucokisekileyo ngokusemandleni, kuthathelwa ingqalelo into yokuba ubuncinci bemilinganiselo yamacandelo akufanele ibe ngaphantsi kwe-0603 ukwenzela ukuba isixhobo sinokuthengiswa ngesandla. Emva kokuba i-chip ibekwe ebhodini, ndaqala ukukhetha abenzi boluvo. Izinto eziphambili endizigxininise kuzo xa ndikhetha yayiyimilinganiselo yendlu yenzwa kunye nokukwazi ukuthengisa inzwa ekhaya kunye nesethi encinci yezixhobo (intsimbi ye-soldering kunye ne-hair dryer).
Ezi zivamvo zilandelayo zikhethelwe i-sensor: SHT20, SHt21, Si7020, Si7021, HTU21D (inzwa yobushushu kunye nokufuma), zonke ezi zivamvo zinezindlu ezifanayo kunye nezikhonkwane ezifanayo, i-HDC2080 (iqondo lobushushu kunye nenzwa yokufuma) nayo inendlu efanayo Ngaphambi kokuba idweliswe, kodwa inesiphumo esongezelelweyo sokuphazamiseka, ukusebenza kakuhle kwamandla, i-BME280 (ubushushu, ukufuma kunye nenzwa yoxinzelelo), LMT01 (inzwa yobushushu), TMP117(inzwa yobushushu obuchanekileyo), ukusebenza kakuhle kwamandla, ukuphazamisa ukuphuma, ukuseta ubushushu obuphezulu nasezantsi. imida, i-LIS2DW12(i-accelerometer) amandla aphezulu aphezulu, enye yeyona nto ilungileyo kwicandelo layo okanye i-LIS2DH12.
Kwakhona, kuguqulelo lokuqala lwesivamvo, kukho utshintsho lwengcongolo kuluhlu, kodwa kuhlaziyo olwalandelayo lwalungabandakanywanga, ekubeni i-sensor yengcongolo eyi-1.6 cm enebhalbhu yeglasi yayingenandawo eyaneleyo, ndaza ndahlulahlula isibini. abenzi boluvo abanjalo xa ufaka ibhodi egqityiweyo kwimeko, nangenxa yesikwere Uhlobo lwetyala kunye nokuphakama okuncinci kwalo akuzange kuhambelane nesixhobo njengesixhobo sokuvula kunye nokuvala inzwa.
Ukongeza kwi-sensor, kukho ii-LED ezi-2 kwinzwa, enye yazo yi-RGB ebekwe kwicala elisezantsi lenzwa. Amaqhosha amabini e-SMD, elinye liqhagamshelwe ukuseta kwakhona, "umsebenzisi" wesibini wokuphumeza ezinye iimeko zokusebenza zenzwa. Umzimba we-sensor unamalungu amathathu: umzimba oyintloko, ukufakwa kwangaphakathi kunye nomngxuma obambe ibhetri kwaye unamathele kumzimba oyintloko kunye nezikhonkwane ezine, kunye nesigqubuthelo esisezantsi esingena kwimingxuma ekufakweni kwangaphakathi. Kukho kwakhona izikhonkwane ze-analog ezi-4, izikhonkwane ezi-2 zedijithali kunye nezikhonkwane ezimbini ezingaphezulu ezinokuba yi-eriyali ye-NFC okanye izikhonkwane zedijithali, i-SWD port.
I-RGB LED kunye namaqhosha abekwe kwibhodi ye-PCB ngendlela enokuthi ifikeleleke ngokulula xa isigqubuthelo esisezantsi sisusiwe ngemingxuma ekufakweni kwangaphakathi, ezilungiselelwe ukukrazula isigqubuthelo sangasemva endaweni.
Isixhobo siye sahlaziywa kabini, kwakhona ngaphambili, endaweni ye-TMP117 sensor, i-sensor yokukhanya ye-MAX44009 yafakwa, eyathi kamva yatshintshwa yinzwa yobushushu, zombini izinzwa zinomzimba ofanayo, kodwa izikhonkwane ezahlukeneyo emilenzeni, inokuthi. ibe lilize ukuba yatshintshwa, mhlawumbi kufanelekile ukubuya.
Ngoku ndinezixhobo ezi-4 ezinjalo ezisebenza ekhaya, ezimbini kuzo zizinzwa zobushushu kunye nokufuma kunye ne-Si7021 sensors (enye kwi-nRF52832, eyesibini kwi-nRF52811), enye inzwa yothusayo ephunyezwe kwi-LIS2DW12 accelerometer (nRF52810) kunye ne-sensor yokulawula ubushushu. kwi-LMT01 sensor (nRF52810).
Inzwa engenazintambo isebenza kwibhetri ye-CR2032, ukusetyenziswa ebuthongweni yi-1.8 ΞΌA ye-nRF52810, nRF52811 kunye ne-3.7 ΞΌA ye-nRF52832. Ukusetyenziswa kwimodi yokudlulisa idatha 8mA.
Ndicinga ukuba inkcazo yeprotocol esetyenzisiweyo kunye nophuhliso lwesoftware yale sensor kwiimeko ezahlukeneyo zokusetyenziswa ingaphaya kobubanzi beli nqaku.
Uvavanyo lokusebenza kwenzwa kunye nenkqubo yasekhaya ehlakaniphile inokubonwa kwividiyo emfutshane engezantsi.
Iprojekthi yale sensor ivulekile, unokufumana zonke izixhobo kwiprojekthi yam .
Ukuba unomdla kuyo yonke into enxulumene ne-DIY, ungumphuhlisi we-DIY okanye ufuna nje ukuqalisa, unomdla wokusebenzisa izixhobo ze-DIY, ndimema wonke umntu onomdla .
Kuwo wonke umntu ofuna ukwenza izixhobo, qala ukwakha i-automation yekhaya labo, ndicebisa ukuba uqhelane ne-Mysensors protocol ekulula ukufunda-incoko yetelegram
Kwaye kwabo bafuna izisombululo ezisele zikhulile ngokuzenzekela ekhaya, ndiyakumema ukuba uncokole ngetelegram . ()
Enkosi ngengqalelo yakho, konke okuhle!
umthombo: www.habr.com