Yini iseli yomthwalo futhi isebenza kanjani imojula ye-HX711?: Umhlahlandlela ophelele

Umhlaba wezinsimbi, amarobhothi, nezinhlelo zokukala uguquke kakhulu eminyakeni yakamuva ngenxa yokuhlanganiswa kwezinzwa namamojula e-elekthronikhi asiza ukusebenzisana phakathi komhlaba ophathekayo nezilawuli ezincane. Enye yezingxenye ezibalulekile kulokhu kuguquguquka kwezobuchwepheshe iseli lomthwalo kanye nomngane walo ovamile, imojuli ye-HX711 amplifier. Kokubili sekuphenduke izakhi ezicishe zibaluleke kakhulu kulabo abafuna ukwakha izikali zedijithali ezinembile, izinhlelo zokulawula isisindo ezizenzakalelayo, nazo zonke izinhlobo zamaphrojekthi lapho amandla okulinganisa nezisindo kubalulekile.

Uma uke wazibuza Kungenzeka kanjani ukuhumusha amandla asetshenziswa entweni ibe inani le-elekthronikhi elikwazi ukutolika i-Arduino, i-ESP8266 nanoma yimuphi omunye umlawuli omncane?Kulesi sihloko, uzothola incazelo ephelele, elula, futhi eqondile. Uzofunda ngokuningiliziwe ukuthi iyini iseli lomthwalo, ukuthi lisebenza kanjani, izinhlobo zalo, indlela yokulixhuma kumojula ye-HX711, nokuthi ungathatha kanjani amaphrojekthi akho okukala uwayise kwelinye izinga ngokuhlanganisa ihadiwe nesofthiwe njengochwepheshe bangempela.

Iyini iseli yomthwalo futhi kungani ibalulekile ekukaleni isisindo se-elekthronikhi?

Una ukulayisha iseli Kuyingqikithi yayo eyisisekelo, i-transducer eguqula amandla noma ingcindezi esetshenziswa kuyo ibe isignali kagesi. Umgomo wokusebenza ulele entweni yokuhluka kokumelana nogesi lapho iseli likhubazekile ngaphansi kwesenzo somthwalo.. Yingakho bebuye baziwe ngokuthi ama-transducer amandla.

Igama elithi transducer ujwayelene nawe ngoba, ku-electronics, liyingxenye ekwazi ukuguqula inani elibonakalayo (elifana nokucindezela, umsindo, noma ukukhanya) libe isignali elungisekayo. Kulokhu, iseli lomthwalo libona amandla: uma ufaka isisindo kulo, liba ne-deformation encane, cishe engabonakali ekuqaleni, kodwa kwanele ukuguqula ukumelana kukagesi kwezilinganiso zobunzima eziqukethe.

I-Las ama-strain gauges Ziyinhliziyo yeseli yomthwalo. Amashidi noma imicu yezinto eziguquguqukayo ezacile kakhulu ezishintsha ukumelana kwazo ngokuya ngobude noma ukucindezelwa okutholwa yizinto ezinamathiselwe kukho. Lolu shintsho, nakuba luluncane, lungabonwa futhi lukhuliswe kuze kube yilapho luba isignali kagesi okuthi, ifakwe kwidijithali ngokufanelekile, isazise nge ukunemba emandleni asetshenzisiwe.

Ukuguqula ngempumelelo lokhu kuhlukahluka okucashile kube isignali ewusizo, amageji afakwa ekucushweni okubizwa I-Wheatstone BridgeLesi sekhethi, esilinganisweni sakudala sokumelana, sivumela umehluko omncane wokumelana ukuthi ukhuliswe futhi kutholwe isignali ehlukile. Ngakho-ke, ukwelula okulula kwezinto kubangela ushintsho ekucindezelekeni okungalinganiswa futhi kuhlotshaniswe ngokunembile nesisindo esisetshenzisiwe.

Akuwona wonke amaseli okulayisha adalwe alingana. Kunezinhlobo ezimbalwa:

• Amaseli we-Hydraulic: Ngokusekelwe ekucindezelweni koketshezi ngepiston nesilinda.
• Amaseli womoya: Basebenzisa ingcindezi yomoya ku-diaphragm, bekala ukuwohloka okuwumphumela.
• Amaseli we-strain gauge: Okuvame kakhulu kuma-electronics namarobhothi, ngenxa yokulula kwawo ukuhlanganiswa nokunemba.

Nakuba bukhona obunye ubuchwepheshe (piezoelectric, capacitive, njll.), the ama-strain gauges Ziyizona ezisetshenziswa kakhulu ezikalini zasekhaya kanye nezinhlelo zokukala zezimboni ngenxa yezindleko zazo, ukwethembeka kanye nokulula kokulinganiswa.

Ukusebenza Kwangaphakathi: Ibhuloho Le-Wheatstone kanye Nenselele Yezimpawu Ezibuthakathaka

Isici esiyisisekelo sokusebenzisa ukuhluka okuncane kokumelana okukhiqizwa amageji yi- I-Wheatstone BridgeLesi sifunda, esasungulwa ngekhulu le-19, sisekelwe ebhalansi yezinqamuleli ezine ezihlelwe ngendlela ye-rhombus. Lapho okukodwa noma ngaphezulu kwalawa ma-resistant ashintsha (njengoba kwenzeka esilinganisweni sobunzima lapho sonakaliswa), ibhuloho liba lingalingani futhi lenze umehluko ongaba khona ngokulingana noshintsho.

Ngokwenzayo, Iseli elijwayelekile lomthwalo liqukethe amageji ezinhlobo ezine ahlelwe emilenzeni yebhuloho le-WheatstoneUma usebenzisa amandla esitokisini, ama-gauge amabili alula (okwandisa ukumelana kwawo) kanye nokucindezela okubili (ukunciphisa). Ngakho-ke, ibhuloho likhulisa umehluko ongaba khona otholiwe futhi lithuthukise ukuzwela.

Naphezu kwaleli lungiselelo elihlakaniphile, izinguquko zokumelana nazo zisekhona encane kakhulu. Isibonelo, ku-gauge engu-120 ohm, ukucindezela okukhulu kungashintsha ukumelana ngo-0.12 ohms kuphela. Le mali encane idala izinselelo ezimbili: a ama-elekthronikhi anembe kakhulu ukuhlukanisa lezi zinguquko futhi, ngaphezu kwalokho, isignali kufanele ikhuliswe ngaphambi kokuba ifakwe kudijithali futhi icutshungulwe i-microcontroller, engakwazi ukubona izimpawu ezinjalo ezibuthakathaka ngokuqondile.

Yilapho i- I-amplifier ye-HX711.

Imojula ye-HX711: ibhuloho phakathi kweseli yomthwalo kanye ne-microcontroller

El Ingxenye ye-HX711 Isekhethi encane ehlanganisiwe eyenza umsebenzi obalulekile ezinhlelweni zokukala zedijithali: ikhulisa, ibeke izimo futhi iguqule isignali etholwe kuseli yomthwalo ibe yedijithali. Ngale ndlela, Kungenzeka ukuthola izilinganiso ezinembile zesisindo namandla azohunyushwa i-Arduino, ESP8266, PIC nanoma yisiphi esinye isilawuli esincane..

Ezinye zezici zayo eziyinhloko yilezi:

• Kufika ku-24-bit ukulungiswa: ikuvumela ukuthi uthole a ukunemba okuphezulu kakhulu ekufundeni isisindo.
• Ukuguqulwa kwe-Analog-to-digital (ADC): iguqula isignali ye-analog ekhulisiwe ibe inani ledijithali elilungele ukucutshungulwa.
• Inzuzo ehlelekayo: ingalungiswa phakathi kuka-128x no-64x, ukuyivumela ukuthi ivumelane nezinhlelo zokusebenza ezahlukene.
• Ukusetshenziswa kwamandla okuphansi kakhulu: Ilungele izinhlelo zokusebenza eziphathwayo noma amasistimu asebenza ngebhethri.
• Ukuvumelana nezimo ekuxhumekeni: Ixhumana ngamaphinikhodi amabili edijithali (Iwashi/i-SCK kanye nedatha/DT), afana nephrothokholi ye-I2C noma ye-SPI.
• Ibanga lokuhlinzekwa kwamandla ukusuka ku-2.6V ukuya ku-5.5V: iyahambisana namapulatifomu ehlukene kagesi.

Ngenxa yalezi zici, i-HX711 isibe yi- I-De facto indinganiso yokufunda kwamaseli okulayisha kumaphrojekthi we-DIY nasemkhakheni wezimboni, njengoba kwenza ukuphila kube lula kakhulu kumthuthukisi: abadingi ukuklama imibuthano yokukhulisa i-amplification futhi bangagxila ekuthuthukiseni isofthiwe kanye nengqondo yesistimu yokukala.

Imojula ye-HX711 ivamise ukuba nezixhumi ezimbili eziyinhloko: esisodwa seseli yomthwalo nesinye se-microcontroller. Uxhumano lusekelwe kumakhebuli amane amakhulu:

• Okubomvu (E+, VCC): I-voltage ye-excitation enhle.
• Mnyama (E-, GND): I-voltage ye-excitation engalungile.
• Okumhlophe (A-): okokufaka kwesignali engalungile (Okukhiphayo -).
• Okuluhlaza (A+): okokufaka kwesignali evumayo (Okukhiphayo +).

Amanye amamodeli engeza ucingo lwesihlanu (oluphuzi, YLW), oluvame ukusebenza njengereferensi ephansi noma olungasetshenziswa ekucushweni okujwayelekile.

Layisha izinhlobo zamaseli namamodeli: indlela yokukhetha elungile

Ukukhetha iseli yokulayisha efanelekile Amaseli okulayisha abalulekile ukuze uthole ukufundwa okunembile kuphrojekthi yakho yokukala. Amaseli okulayisha ayahluka ngokuya kumthamo wawo omkhulu, isici sesimo somzimba, nokuzwela:

• Umthamo omkhulu: Kukhona ama-load cell 1kg, 5kg, 20kg, 50kg nangaphezulu. Okwe ukunemba okuphelele, kuwumqondo omuhle ukukhetha iseli elinebanga eliphezulu elisondelene kakhulu nesisindo esiphezulu sohlelo lwakho lokusebenza. Isibonelo, uma ufuna ukukala kuze kufike ku-4 kg, iseli elingu-5 kg ​​lilungile. Ukusebenzisa iseli engu-20 kg kulolo bubanzi kuzokunikeza ukufundwa kokunemba okuphansi.
• Ukucushwa kwemishini: Okuvame kakhulu amabha awunxande wokukhwezwa esikalini sasekhishini, kodwa futhi ungathola okumise okwe-S, idiski, amamodeli e-double-beam, njll. Ngayinye iphendula kangcono kuzimo ezihlukene zesisindo.
• Ikhwalithi nokuzwela: Ukunemba kuzophinde kuncike kwikhwalithi yamageji nokwakhiwa kwangaphakathi. Amaseli ekhwalithi ngokuvamile anikeza imiphumela engcono kanye nokukhukhuleka okuphansi.
• Uhlobo lwebhuloho: I-HX711 ingasebenza ngawo womabili amaseli ebhuloho eligcwele kanye nengxenye yebhuloho, futhi isekela nokuxhuma amaseli angafika amabili ekucushweni kwebhuloho elikabili.

Ukufaka iseli nakho kubalulekile. Qiniseka ukuthi ushiya indawo emaphakathi (ingxenye ebucayi yebha) ingenazo izithiyo ukuze ikwazi ukonakala kahle ngaphansi komthwalo, bese ulandela umcibisholo ukuze uyifake lapho uya khona amandla ohlose ukuwakala.

Idizayini Yemishini Nokuxhumana: Ungasihlanganisa Kanjani Isikali Sakho Sedijithali nge-HX711

Ukuqhubekela phambili nokuzilolonga, kubalulekile ukuqonda Indlela iseli yomthwalo kanye nemojuli ye-HX711 exhunywe futhi yahlanganiswa ngayo ngokomzimba. Lezi yizinyathelo ezijwayelekile:

• Ukufakwa komshini: Sebenzisa ama-spacers ukuze uvikele iseli lomthwalo phakathi kwesisekelo nesiqukathi noma ipulatifomu ezosekela isisindo. Isikhungo seseli kufanele sihlale sikhululekile futhi kube ukuphela kwengxenye eguquguqukayo ngaphansi komthwalo.
• Isiqondiso samandla: Qaphela umcibisholo oqoshwe esitokisini, obonisa isiqondiso lapho isisindo kufanele sisetshenziswe khona.
• Ukuxhumeka kukagesi: Xhuma intambo yeseli ngayinye kumaphinikhodi ahambisanayo ku-HX711 ngokulandela ikhodi yombala (Okubomvu ukuya ku-E+/VCC, Mnyama ukuya ku-E-/GND, Okuluhlaza kuya ku-A+/Output+, Okumhlophe ukuya ku-A-/Okukhipha-). Ukuze uthole imininingwane eyengeziwe, bheka i- umhlahlandlela wokulayisha amaseli.
• Ukuxhuma ku-microcontroller: Kusukela komunye umugqa wamaphini ku-HX711, xhuma i-GND ne-VCC kugesi, namaphinikhodi e-DT (Idatha) kanye ne-SCK (Iwashi) kunoma imaphi amaphinikhodi amabili edijithali ku-Arduino nanoma yiliphi ibhodi olisebenzisayo.

Ezilinganisweni zokugezela noma amaphrojekthi ayinkimbinkimbi, avame ukusetshenziswa amaseli okulayisha amane alula ihlelwe emakhoneni, okumele izintambo zayo zihlanganiswe kusetshenziswa a imojula yesihlanganisi noma ukulandela umdwebo wokuxhumana owenziwe ngesandla (umsebenzi onembayo lapho uzodinga ukutadisha idatha ngokucophelela futhi ulinganise ukumelana ukuze ubone intambo ngayinye).

Kulabo abafuna ukunemba okuphezulu, kunamamojula esihlanganisi avela kumikhiqizo efana ne-SparkFun enza izintambo zibe lula futhi akuvumela ukuthi uhlanganise kalula amasiginali asuka kuzo zonke izinzwa ezine zibe okokufaka okukodwa okuhambisana ne-HX711.

I-Wheatstone Bridge in Practice: Izinzuzo Nokucatshangelwa

Ukusetshenziswa kwe I-Wheatstone Bridge Lokhu akukhona ukuqondana nje: kuvumela ukukhuliswa okunembile kwezinguquko zokumelana namageji obunzima, ukuphatha ukuxazulula umehluko omncane kakhulu nokuthola umugqa omuhle kakhulu esilinganisweni.

Ezinhlelweni lapho kusetshenziswa iseli elilodwa lokulayisha izintambo ezine, ibhuloho selilungisiwe futhi asikho isidingo sokuhlanganisa izinto. Uma ufuna ukwakha ibhalansi enembe kakhudlwana ngokuhlanganisa amaseli amaningi, uzodinga ukuwafaka izintambo ukuze wenze ibhuloho elilodwa le-Wheatstone, ulandele i-topology echazwe kahle, noma usebenzise amamojula esihlanganisi. Ukuguqulwa kwesignali yokuphumayo Lokhu kungenzeka uma, njengoba isisindo sanda, ukufunda kunciphisa noma ukuziphatha ngendlela ephambene nalokho okulindelekile; kulokhu, vele uhlehlise ukuxhumeka kwezintambo A+ kanye no-A-.

Izici zobuchwepheshe ezithuthukile ze-HX711

Le mojuli inikeza izinzuzo eziningi okwenza idume kakhulu:

• Isinqumo: Kufika kumabhithi angu-24, okuvumela ukutholwa kwezinguquko zesisindo esincane.
• Inzuzo ehlelekayo: Ungakhetha phakathi kuka-128x noma 64x kuye ngezidingo zakho zokuzwela.
• Izinga lesampula elilungisekayo: Phakathi kuka-10 Hz kanye no-80 Hz, okukuvumela ukuthi uvumelanise isivinini sokulinganisa nokuzinza kohlelo lokusebenza.
• Ukuhambisana: Isekela amaseli okulayisha ebhuloho eligcwele noma isigamu sebhuloho, anekhono lokufunda amaseli amabili ekucushweni okukabili.
• Ukusetshenziswa kwamandla okuphansi kakhulu: Ekusebenzeni okusebenzayo, ngaphansi kwe-1.5 mA; ilungele amadivayisi asebenza ngebhethri.
• Ukushisa okusebenzayo: Ibanga elibanzi kakhulu, ukusuka ku-40ºC kuya ku-+85ºC.
• Ifomethi ehlangene: Ubukhulu bayo bukwenza kube lula ukuhlanganisa amabhodi nama-prototypes, nezikhonkwane ezilungele ukudayiswa noma ukufakwa ebhodini lezinkwa.

Amadokhumenti ayo abanzi futhi kunomphakathi omkhulu wonjiniyela, okuhumushela ekutholakaleni kwe izibonelo zamakhodi, imitapo yolwazi kanye neziqondiso eziku-inthanethi ukuze uqedele iphrojekthi yakho ngokushesha.

Ungahlela kanjani futhi ulinganise isikali sedijithali ngokusekelwe ku-HX711 ne-Arduino

Ukukhweza i-hardware kuwuhhafu womsebenzi. Ukuze uthole izilinganiso zesisindo ngqo, udinga ukuhlela futhi, ngaphezu kwakho konke, ukulinganisa uhlelo ngendlela efanele. Asibone indlela yokwenza isinyathelo ngesinyathelo:

Ifaka umtapo wezincwadi we-HX711

Isinyathelo sokuqala ukufaka umtapo wolwazi osiza ukuxhumana ne-HX711. Inketho edume kakhulu nethembekile umtapo wolwazi owakhiwe ngu-Bogde, otholakala ku-GitHub. Ungayilanda ngokwenza noma uyifake ngokuqondile ku- Umphathi wesitolo sezincwadi kusuka ku-Arduino IDE, icinga i-“HX711”.

Imisebenzi esemqoka yelabhulali ye-HX711

• qala(PinData, PinClock): Qalisa i-HX711 ngokubonisa idatha nezikhonkwane zewashi ezisetshenziswa kusilawuli esincane sakho.
• set_scale(isilinganiso sokuntanta): Inikeza inani lesikali noma isici sokuguqula. Lokhu kubalulekile ukuze ukufundwa kuhambisane nesisindo sangempela.
• imisebenzi: Yenza i-taring, okungukuthi, isetha ukulinganisa kuqanda ngesisindo samanje. n ikhombisa inani lamasampula athathiwe ukuchaza ukhula.
• funda (): Yenza ukufunda okukodwa kwesiginali kusuka ku-ADC yangaphakathi ye-HX711.
• funda_isilinganiso(n): Ibuyisela isilinganiso sokufundwa kuka-n; kwandisa i ukuzinza y ukunemba yesilinganiso.
• get_value(n): Ibuyisela inani lokufunda kukhishwe isisindo se-tare. Uma uphase n, ilinganisa lelo nani lokufundwayo.
• thola_amayunithi(n): Bala isisindo ngokususa ukhula bese uhlukanisa umphumela ngesici sesikali.

Le misebenzi ihlanganisa umjikelezo ophelele wokuqalisa, ukulinganisa, ukukala kanye nokufunda kwesikali.

Ukulinganisa: isinyathelo esibalulekile sokulinganisa okunembile

La ukulinganisa Lokhu kuhilela ukulungisa isici sesikali ukuze ukufundwa kwedijithali kwe-HX711 kuhambisane nenani langempela lesisindo kumayunithi afunekayo (imvamisa amakhilogremu noma amagremu). Ubuchwepheshe obujwayelekile bumi kanje:

1. Ngaphandle kwanoma iyiphi into esikalini, isebenzisa uhlelo lokulinganisa olwenza i-tare (ukusetha isikali sibe uziro).
2. Beka into enesisindo esaziwayo (okufanelekile, kufanele kube eduze nesisindo esiphezulu ozosilinganisa) esikalini.
3. Bhala phansi inani lokufunda elingakaliwe ukuthi imonitha ye-serial ikubonisa. Kujwayelekile ukulinganisa ukufundwa okuningana.
4. Bala isici sesikali usebenzisa ifomula: read_value / actual_weight = scale_factor, ngokucabangela amayunithi owafunayo (isibonelo, uma usebenzisa isisindo se-4kg futhi ukufundwa kuyi-1.730.000, isici sesikali sizoba ngu-432500).
5. Lungisa uhlelo ukuze kumsebenzi othi set_scale ufake inani elibaliwe.
6. Phinda ukufundwa. Engeza noma susa isisindo ukuze uhlole ukunemba kwesilinganiso.

Ukulinganisa kuzwela ukuma kweseli, ukuqina kosekelo, ikhwalithi yokuxhumana kukagesi, nezinye izici. Uma ushintsha iseli, indlela yokufaka, noma imodeli, uzodinga ukulinganisa kabusha.

Isibonelo sokulinganisa nekhodi yokukala

Umdwebo ojwayelekile we-Arduino uhlanganisa izingxenye ezimbili: ukulinganisa nokulinganisa. Umdwebo wokulinganisa ukuvumela ukuthi ulungise ngokuhlanganyela isici usebenzisa isiqaphi se-serial (+ noma - ukushuna kahle inani lesikali). Umdwebo wokukala uvele ubonise isisindo esifundiwe esikrinini usebenzisa isici esitholiwe.

Isakhiwo sekhodi eyisisekelo kungaba yilokhu okulandelayo (okushintshiwe futhi kwafingqwa, ukuze ungaphindi ngokoqobo okuqukethwe kwezibonelo):

• Kufaka phakathi umtapo wezincwadi we-HX711.
• Ichaza amaphinikhodi weDATHA kanye neWASHI.
• Iqala i-HX711 futhi yenza i-tare.
• Kuluphu eyinhloko, sebenzisa get_units() ukuze ubonise isisindo esifundwa njalo ngesigamu sesekhondi.
• Ikuvumela ukuthi uguqule isici sokulinganisa kusuka kusiqaphi esilandelanayo uma ufuna ukulungisa kahle ukunemba.

Le ndlela, edume ngabakwa-SparkFun nabanye onjiniyela, iqinisekisa ukulinganisa okuphelele ngisho noma iseli lingafani ncamashi namanye amamodeli afanayo.

Ukuhlanganiswa okuthuthukisiwe: izikali zokugezela, i-IoT, nezinhlelo zezimboni

Kumaphrojekthi asekhaya, amaseli omthwalo avame ukutholwa esikalini sokugezela sokuhweba (imvamisa eza nezinzwa ezine ezingazodwa). Ukuze uwahlanganise futhi uxhume ku-HX711, ungasebenzisa imojula yesihlanganisi noma ulandele imidwebo ethile yokuxhuma ekuvumela ukuthi wakhe ibhuloho le-Wheatstone elinazo zonke izinzwa ezine. Uma ungenayo imojuli yesihlanganisi, uzodinga ukukhomba izintambo (ngokuvamile ezintathu ngenzwa ngayinye) futhi uzihlanganise usebenzisa ireferensi yokumelana kwangaphakathi phakathi kwamapheya.

Ukuhlanganiswa kwe-HX711 akunamingcele. Kuvame kakhulu kumaphrojekthi we-IoT (I-inthanethi Yezinto), lapho isisindo esigadwa isikali sedijithali sithunyelwa emafini kusetshenziswa i-ESP8266, NodeMCU, noma okufanayo. Lokhu kukuvumela ukuthi wenze ukukala okuzenzakalelayo, uhlu lokulawula ukude, uqaphe amasilinda egesi, amathangi, nezinye izinhlelo isisindo sazo esiyipharamitha ebalulekile.

Emkhakheni wezimboni, ukuqina nokunemba kwe-HX711 kuvumela ukusetshenziswa kwayo ezinhlelweni zokudosa okuzenzakalelayo, izinhlelo ezizenzakalelayo zokulawula inqubo, imishini yokupakisha, kanye nezicelo zezokwelapha, njengoba ukulungiswa kwayo kwanele ukukala amagremu kuya kumashumi amakhilogremu ngokunemba okukhulu.

Izincomo nokuxazululwa kwezinkinga ezivamile

Lapho wakha isistimu yakho yokukala, gcina lawa macebiso engqondweni:

• Gwema ukushaqeka ngokweqile noma ukudlidliza kuseli lomthwalo, njengoba zingalimaza amageji noma zithinte ukulinganisa.
• Iqinisekisa ukulungiswa komshini okulungile ukugwema ukufundwa okuguquguqukayo noma okungazinzile. Indawo emaphakathi kufanele ibe mahhala futhi amandla ahambisane ngokuphelele nesiqondiso esibonisiwe.
• Hlola ukuxhumana kukagesiUkuthintwa okungalungile kungabangela ukushintshashintsha noma umsindo kusiginali, okwenza ukulinganisa kube nzima.
• Uma ukufundwa kungazinzi noma kuhluka ngaphansi kwe-vacuum, yenza i-tare entsha futhi uqiniseke ukuthi ukunikezwa kwamandla kuzinzile.
• Uma umphumela wokufundwayo uhluka ngokuhlanekezela (ukwehla ngesisindo), iguqula ukuxhumeka kwe-A+ no-A-.

Futhi, uma iphrojekthi yakho idinga ukukala izigaba zesisindo ezihlukene ngezikhathi ezihlukene, khumbula ukulungisa isici sokulinganisa ngokufanele. Hlala ulondoloza amanani okulinganisa atholiwe kuseli ngayinye nokucushwa.

Izici zemojuli ye-HX711 kanye Nezinketho Zokuhweba

Imakethe inikeza amamojula anhlobonhlobo ahambisanayo e-HX711, ezitolo ezikhethekile nasezinkundleni zokuxhumana ezihloselwe ukujwayelekile. Ngokuvamile ziza namaseli omthwalo wezinhla ezihlukene (1 kg, 5 kg, 20 kg, 50 kg) futhi anamaphini noma izihloko ukuze ahlanganiswe kalula. Izici eziphawulekayo zalawa mamojula zifaka:

• I-voltage yokusebenza: phakathi kuka-2.6V kanye no-5.5V, okuwavumela ukuthi asetshenziswe nawo womabili amabhodi angu-3.3V kanye ne-5V.
• Ukusetshenziswa kwamandla okuphansi kakhulu: ngaphansi kuka-1.5 mA.
• Amafomethi ahlangene: ilungele ukuhlanganiswa kumaphrojekthi we-DIY nama-prototypes.
• Amadokhumenti nokusekelwa: Umphakathi nabakhiqizi bavame ukuhlinzeka ngezifundo, amashidi wedatha, nezibonelo zokusebenzisa kokubili i-Arduino nezinye izinkundla.

Izibonelo ezingokoqobo zokusebenzisa kanye nezicelo

Ngenxa yokuguquguquka kwamaseli omthwalo kanye ne-HX711, afaneleka ezinhlobonhlobo zezinhlelo zokusebenza:

• Izikali zedijithali zasendlini nekhishi: ukukala izithako noma ukudla ngokunemba okukhulu.
• Amasistimu wokuqapha isilinda segesi: Bavumela ukuqapha okukude kwesimo sokugcwalisa ukugwema ukuphelelwa ukunikezwa.
• Ukulawulwa kwempahla ezindaweni zokugcina izimpahla nezitolo: Ngokukala okuqhubekayo, isitoko esisele singagadwa ngesikhathi sangempela.
• Izikali ezixhunywe ngamafu: Kusetshenziswa amabhodi afana ne-ESP8266, idatha eqoqiwe ingabonwa noma icutshungulwe ezisekelweni zewebhu ukuze kuhlaziywe okuthuthukile.
• Imishini yezokwelapha: njengezikali zemibhede yasesibhedlela, amasistimu omthamo kanye nokuqapha isisindo kuma-laboratories.
• Amarobhothi namasistimu wokudosa okuzenzakalelayo: ukusabalalisa inani elifanele lempahla eluhlaza kunqubo ngayinye.

Kuzo zonke lezi zimo, uxhumano nephrothokholi yokuhlela ifana kakhulu. Uma iseli selikaliliwe, uzoba nezilinganiso ezithembekile nezinembile ezizothuthukisa ukuzenzela nokulawula amasistimu akho.

Indlela yokukhetha isistimu efanele yephrojekthi yakho

Isinqumo phakathi kokusebenzisa iseli engu-1kg, 5kg, 20kg, noma 50kg, uhlobo lokukhweza, nokulinganisa kuzoncika ezidingweni zakho ezithile. Nansi indlela yokukhetha okulungile: ezinye izindlela zokwenza isinqumo esingcono kakhulu:

• Ibanga lesisindo: Khetha iseli lomthwalo elinomthamo omkhulu ongaphezudlwana kwesisindo esiphezulu ozosikala ngokujwayelekile.
• Ukunemba okudingekayo: Uma udinga ukunemba kugramu, bheka amaseli omthwalo anokuzwela okuphezulu kanye nebanga eliphansi. Uma ngabe uhlelo lwakho lokusebenza lubekezelela amaphutha amagremu ambalwa noma amashumi amagremu, ungakhetha amamodeli ebanga eliphakeme.
• Ubunzima bokuhlanganisa imishini: Amamodeli e-Bar-mount for kitchen scales kulula ukuwafaka. Kuzinzwa ezine ezikalini zasendlini yokugezela, uzodinga ukusebenza ekuhlanganiseni izintambo noma uthenge imojula yenhlanganisela.
• Ukusekelwa kwe-Microcontroller: Amamojula we-HX711 ahambisana cishe nanoma yiliphi ikhadi, kodwa qiniseka ukuthi i-voltage yokuhlinzeka kanye namazinga okunengqondo alungile.

I-modularity nenani eliphansi le-HX711 namaseli ayo omthwalo asebenzise ubuchwepheshe bokukala be-elekthronikhi, okuvumela noma yimuphi umenzi, umfundi, noma uchwepheshe ukuthi azakhele isistimu yakhe yokulinganisa ngempumelelo eqinisekisiwe.

Ukukhetha okufanele, ukulinganisa, nokuhlanganiswa komshini kunquma impumelelo yephrojekthi yakho. Ngesilinganiso esinokwethenjelwa nesizinzile, ungakwazi ukuhlanganisa izinhlelo zokulawula, ezizenzakalelayo, nokuqapha ngemiphumela yobungcweti, kokubili ezinsizeni zasekhaya nezimboni.