DIY, kamar yadda Wikipedia ya ce, ya daɗe ya zama al'adu. A cikin wannan labarin ina so in yi magana game da aikina na DIY na ƙaramin firikwensin taɓawa da yawa mara waya, kuma wannan zai zama ƙaramin taimako na ga wannan al'ada.
Labarin wannan aikin ya fara da jiki, yana jin wauta, amma haka aka fara wannan aikin. An sayi shari'ar akan gidan yanar gizon Aliexpress, ya kamata a lura cewa ingancin simintin filastik na wannan yanayin yana da kyau. Bayan ɗan gajeren wasiƙa tare da mai siyarwa, an aika da zane ta hanyar wasiƙa kuma an fara aikin.
Zane da kansa ba a auna shi sosai kuma rabin ma'auni na iyakoki, yankewa da ramukan fasaha na allon da'ira da aka buga a nan gaba dole ne a yi ta amfani da caliper. Bayan da aka karɓi duk ma'auni na ciki na shari'ar, ya bayyana a fili cewa guntun rediyo dole ne a "gudanarwa" kai tsaye a kan allon da aka buga, tun da tsayin daka daga saman da'irar da aka buga zuwa saman ciki na shari'ar ya kasance. 1.8 mm, kuma mafi ƙarancin tsayin matsakaicin matsakaicin tsarin rediyon shine yawanci 2 mm (ba tare da allo ba).
NRF52 SoC a cikin kunshin QFN48 an zaɓi don firikwensin. A wannan yanayin a cikin jerin nRF52, Nordic yana da zaɓuɓɓuka guda uku: nRF52810, nRF52811 (sabo), nRF52832. Chip sigogi: 64 MHz Cortex-M4, 2.4 GHz transceiver, 512/256 KB Flash, 64/32 KB RAM don nRF52832 da 192 KB Flash, 24 KB RAM don nRF52810, nRF52811, nRF52811, Multi-protocol Energy kwakwalwan kwamfuta, goyan bayan Bluetooth. raga, ESB, ANT, da nRFXNUMX, ban da abubuwan da ke sama, kuma suna da Zigbee da Thread, da kuma Neman Hanyar Bluetooth.
Na yanke shawarar yin firikwensin da kansa mai yawan ji don a iya amfani da shi don ayyuka daban-daban. Don haka, tsarin guntu ɗin dole ne a yi shi da ƙarfi sosai gwargwadon yuwuwar, la'akari da cewa ƙananan ma'auni na abubuwan bai kamata ya zama ƙasa da 0603 ba don a iya siyar da na'urar da hannu. Bayan an sanya guntu a kan allo, na fara zaɓar na'urori masu auna firikwensin. Babban abubuwan da na mayar da hankali a kai lokacin zabar su ne ma'auni na mahalli na firikwensin da kuma ikon siyar da firikwensin a gida tare da ƙananan kayan aiki (ƙarfe da na'urar bushewa).
An zaɓi na'urori masu zuwa don firikwensin: SHT20, SHt21, Si7020, Si7021, HTU21D (zazzabi da zafi firikwensin), duk waɗannan na'urori masu auna firikwensin suna da gidaje iri ɗaya da fil iri ɗaya, HDC2080 (zazzabi da zafi firikwensin) shima yana da makamantansu kamar kafin da aka jera, amma yana da ƙarin fitarwar katsewa, mafi ƙarfin kuzari, BME280 (zazzabi, zafi da firikwensin matsa lamba), LMT01 ( firikwensin zafin jiki), TMP117 ( firikwensin zafin jiki mai girma), ingantaccen ƙarfin kuzari, fitarwar katsewa, saitin sama da ƙananan zafin jiki. iyakoki, LIS2DW12 (accelerometer) ingantaccen makamashi mai ƙarfi, ɗayan mafi kyau a cikin sashin sa ko LIS2DH12.
Har ila yau, a cikin sigar farko na firikwensin, akwai maɓallin reed a cikin jerin, amma a cikin bita-bita na gaba an cire shi, tunda firikwensin 1.6 cm na firikwensin radiyo tare da kwandon gilashi ba shi da isasshen sarari, kuma na raba biyu. irin waɗannan na'urori masu auna firikwensin lokacin shigar da allon da aka gama a cikin akwati, kuma saboda murabba'in nau'in harka da ƙaramin tsayinsa bai dace da na'urar ba a matsayin firikwensin buɗewa da rufewa.
Baya ga na'urori masu auna firikwensin, akwai LEDs guda 2 akan firikwensin, ɗayan su shine RGB wanda ke gefen ƙasa na firikwensin. Maɓallan SMD guda biyu, ɗayan da aka haɗa don sake saiti, "mai amfani" na biyu don aiwatar da wasu yanayin aiki na firikwensin. Jikin firikwensin ya ƙunshi sassa uku: babban jiki, abin ciki na ciki tare da rami mai riƙe da baturi kuma an haɗa shi da babban jiki tare da screws hudu, da murfin ƙasa wanda ke shiga cikin ramukan da ke cikin ciki. Hakanan akwai fil ɗin analog guda 4, fil ɗin dijital 2 da ƙarin fil biyu waɗanda zasu iya zama eriyar NFC ko fil ɗin dijital, tashar SWD.
RGB LED da maɓalli ana sanya su a kan allo na PCB ta yadda za a iya samun damar shiga cikin sauƙi lokacin da aka cire murfin ƙasa ta cikin ramukan da ke cikin ciki, waɗanda aka tsara don ɗaukar murfin baya zuwa wurin.
Na'urar ta wuce bita guda biyu, kuma a baya, a madadin TMP117 firikwensin, an sanya na'urar firikwensin haske MAX44009, wanda daga baya aka maye gurbinsa da na'urar firikwensin zafin jiki, duka na'urori suna da jiki iri ɗaya, amma fil daban-daban akan ƙafafu, yana iya yiwuwa. a banza cewa an maye gurbinsa, watakila yana da daraja a dawo.
Yanzu ina da irin waɗannan na'urori guda 4 waɗanda ke aiki a gida, biyu daga cikinsu sune na'urori masu auna zafin jiki da zafi tare da firikwensin Si7021 (ɗaya akan nRF52832, na biyu akan nRF52811), ɗayan firikwensin girgiza da aka aiwatar akan LIS2DW12 accelerometer (nRF52810) da firikwensin sarrafa zafin jiki. a kan firikwensin LMT01 (nRF52810).
Firikwensin mara waya yana gudana akan baturin CR2032, amfani a cikin barci shine 1.8 μA don nRF52810, nRF52811 da 3.7 μA don nRF52832. Amfani a yanayin canja wurin bayanai 8mA.
Ina tsammanin bayanin ka'idar da aka yi amfani da ita da haɓaka software don wannan firikwensin don yanayin amfani daban-daban ya wuce iyakar wannan labarin.
Ana iya ganin gwajin aikin firikwensin tare da tsarin gida mai wayo a cikin ɗan gajeren bidiyon da ke ƙasa.
Aikin wannan firikwensin yana buɗewa, zaku iya samun duk kayan aikin akan nawa .
Idan kuna sha'awar duk abin da ya shafi DIY, kai mai haɓaka DIY ne ko kuma kawai kuna son farawa, kuna sha'awar amfani da na'urorin DIY, Ina gayyatar duk masu sha'awar. .
Ga duk wanda ke son kera na'urori, fara gina injina ta atomatik don gidansu, Ina ba da shawarar sanin ƙa'idar Mysensors mai sauƙin koya - telegram chat
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Na gode da hankalin ku, duk mafi kyau!
source: www.habr.com