DIY, monga Wikipedia imanenera, yakhala yachikalekale. M'nkhaniyi ndikufuna kulankhula za polojekiti yanga ya DIY ya kachipangizo kakang'ono kopanda zingwe zopanda zingwe, ndipo ichi chikhala chothandizira changa chaching'ono ku subculture iyi.
Nkhani ya polojekitiyi idayamba ndi thupi, zikumveka zopusa, koma ndi momwe polojekitiyi idayambira. Mlanduwu udagulidwa patsamba la Aliexpress, ziyenera kukumbukiridwa kuti mtundu wa pulasitiki wamtunduwu ndi wabwino kwambiri. Pambuyo polemberana makalata ochepa ndi wogulitsa, chojambula chinatumizidwa ndi makalata ndipo ntchitoyi inayamba.
Chojambula chokhacho chinali chochepa kwambiri ndipo theka la miyeso ya malire, kudula ndi mabowo aukadaulo a bolodi losindikizidwa lamtsogolo limayenera kupangidwa pogwiritsa ntchito caliper. Atalandira miyeso yonse ya mkati mwa mlanduwo, zinaonekeratu kuti chip radio iyenera "kuyendetsedwa" mwachindunji pa bolodi losindikizidwa, popeza kutalika kuchokera pamwamba pa bolodi losindikizidwa kupita kumtunda wamkati wa mlanduwo unali. 1.8 mm, ndipo kutalika kochepa kwa gawo lomaliza lawayilesi nthawi zambiri kumakhala 2 mm (popanda chophimba).
NRF52 SoC mu phukusi la QFN48 idasankhidwa kuti ikhale sensor. Pankhani iyi mu mndandanda wa nRF52, Nordic ili ndi njira zitatu: nRF52810, nRF52811 (zatsopano), nRF52832. Chip parameters: 64 MHz Cortex-M4, 2.4 GHz transceiver, 512/256 KB Flash, 64/32 KB RAM ya nRF52832 ndi 192 KB Flash, 24 KB RAM ya nRF52810, nRF52811, tchipisi tambirimbiri, tchipisi ta Bluetooth Energy, kuthandizira Bluetooth Low mauna, ESB, ANT, ndi nRF52811, kuwonjezera pa pamwambapa, ilinso ndi Zigbee ndi Thread, komanso Bluetooth Direction Finding.
Ndinaganiza zopanga sensa yokhayo yamitundu yambiri kuti igwiritsidwe ntchito zosiyanasiyana. Pachifukwa ichi, mapangidwe a chip amayenera kupangidwa molingana ndi momwe angathere, poganizira kuti miyeso yochepa ya zigawozo sayenera kukhala yocheperapo 0603 kuti chipangizocho chigulitsidwe pamanja. Chip chikayikidwa pa bolodi, ndinayamba kusankha masensa. Zinthu zazikuluzikulu zomwe ndimayang'ana posankha zinali miyeso ya sensa nyumba komanso kuthekera kogulitsa sensa kunyumba ndi zida zochepa (chitsulo chogulitsa ndi chowumitsa tsitsi).
Masensa otsatirawa adasankhidwa kuti apange sensor: SHT20, SHt21, Si7020, Si7021, HTU21D (sensor ya kutentha ndi chinyezi), masensa onsewa ali ndi nyumba zomwezo ndi mapini omwewo, HDC2080 (sensa ya kutentha ndi chinyezi) ilinso ndi nyumba yofanana ndi isanatchulidwe, koma imakhala ndi zotulutsa zina zosokoneza, zopatsa mphamvu zambiri, BME280 (kutentha, chinyezi ndi kukakamiza sensa), LMT01 (sensa ya kutentha), TMP117 (sensor yotentha kwambiri), mphamvu zamagetsi, kusokoneza, kuyika kumtunda ndi kutsika kutentha. malire, LIS2DW12(accelerometer) yogwira ntchito kwambiri, imodzi mwazabwino kwambiri m'gawo lake kapena LIS2DH12.
Komanso, mu mtundu woyamba wa sensayo, panali kusintha kwa bango pamndandanda, koma m'mawunikidwe otsatirawa sikunaphatikizidwe, popeza sensor yosinthira bango ya 1.6 cm yokhala ndi babu yagalasi inalibe malo okwanira, ndipo ndidagawaniza zingapo. masensa oterowo pakuyika bolodi yomalizidwa mumlanduwo, komanso chifukwa cha lalikulu Mtundu wamilandu ndi kutalika kwake kochepa sikunagwirizane ndi chipangizocho ngati maginito otsegula ndi kutseka sensa.
Kuphatikiza pa masensa, pali ma LED a 2 pa sensa, imodzi mwa izo ndi RGB yomwe ili pansi pa sensa. Mabatani awiri a SMD, amodzi olumikizidwa kuti akhazikitsenso, "wogwiritsa" wachiwiri kuti akwaniritse zochitika zina zama sensor. Thupi la sensa lili ndi zigawo zitatu: thupi lalikulu, choyikapo chamkati chokhala ndi dzenje lomwe limagwira batri ndipo limamangiriridwa ku thupi lalikulu ndi zomangira zinayi, ndi chivundikiro chapansi chomwe chimalowetsa mabowo omwe ali mkati. Palinso mapini 4 a analogi, ma 2 digito ndi mapini ena awiri omwe angakhale mlongoti wa NFC kapena ma pin a digito, doko la SWD.
Ma LED a RGB ndi mabatani amaikidwa pa bolodi la PCB m'njira yoti azitha kupezeka mosavuta pamene chivundikiro cha pansi chikuchotsedwa kudzera m'mabowo omwe ali mkati mwake, omwe amapangidwa kuti agwire chivundikiro chakumbuyo.
Chipangizocho chadutsa kukonzanso kuwiri, komanso koyambirira, m'malo mwa sensor ya TMP117, sensor ya MAX44009 idayikidwa, yomwe pambuyo pake idasinthidwa ndi sensor ya kutentha, masensa onsewa ali ndi thupi lomwelo, koma zikhomo zosiyana pamiyendo, zitha kukhala pachabe kuti adasinthidwa, mwina ndiyenera kubwereranso.
Tsopano ndili ndi 4 zida zotere zomwe zimagwira ntchito kunyumba, ziwiri mwazo ndi kutentha ndi chinyezi masensa okhala ndi masensa a Si7021 (imodzi pa nRF52832, yachiwiri pa nRF52811), imodzi ndi sensor yodabwitsa yomwe imayikidwa pa LIS2DW12 accelerometer (nRF52810) ndi sensor yowongolera kutentha. pa LMT01 sensor (nRF52810).
Sensa yopanda zingwe imayenda pa batri ya CR2032, kumwa mu tulo ndi 1.8 ΞΌA kwa nRF52810, nRF52811 ndi 3.7 ΞΌA kwa nRF52832. Kugwiritsa ntchito mumayendedwe otengera data 8mA.
Ndikuganiza kuti kufotokozera kwa protocol yomwe imagwiritsidwa ntchito komanso kupanga mapulogalamu a sensa iyi pazochitika zosiyanasiyana zogwiritsira ntchito sikungatheke m'nkhaniyi.
Kuyesa kwa ntchito ya sensa yokhala ndi nyumba yanzeru kumawoneka muvidiyo yayifupi pansipa.
Ntchito ya sensa iyi ndi yotseguka, mutha kupeza zida zonse pa polojekiti yanga .
Ngati mumakonda chilichonse chokhudzana ndi DIY, ndinu wopanga DIY kapena mukungofuna kuti muyambe, mukufuna kugwiritsa ntchito zida za DIY, ndikuitana aliyense amene ali ndi chidwi ndi izi. .
Kwa aliyense amene akufuna kupanga zida, yambani kupanga makina opangira nyumba yawo, ndikupangira kuti adziΕ΅e njira yosavuta yophunzirira ya Mysensors - macheza a telegraph.
Ndipo kwa iwo omwe akuyang'ana mayankho okhwima okhwima opangira makina apanyumba, ndikukupemphani kuti mulankhule pa telegraph . ()
Zikomo chifukwa cha chidwi chanu, zabwino zonse!
Source: www.habr.com