1, Cov khoom siv thiab cov cuab yeej xav tau
Material Science:
Tri xim LED hlaws: Qhov no yog cov ntsiab lus tseem ceeb, feem ntau nrog peb tus pins sib haum rau peb xim liab, ntsuab, thiab xiav.
Kev Tiv Thaiv: Siv los txwv qhov tam sim no dhau los ntawm LED thiab tiv thaiv kom tsis txhob hlawv. Tus nqi ntawm cov resistor yuav tsum tau txiav txim siab raws li cov specifications ntawm LED thiab lub hwj chim mov voltage.
Fais fab mov: Muab hluav taws xob hluav taws xob, uas tuaj yeem yog lub roj teeb, lub hwj chim adapter, lossis lwm yam khoom siv hluav taws xob DC.
Hlau: siv los txuas ntau yam khoom.
Lub khob cij (yeem): Ib qho yooj yim rau kev sim thiab debug, tsis tsim nyog tab sis pom zoo.
Cov cuab yeej:
Hlau stripping pliers: siv los strip tawm txheej rwb thaiv tsev ntawm cov xov hlau.
Vuam rooj los yog vuam cwj mem (yog tias txuas nrog vuam): siv rau vuam hlau thiab cov khoom siv.
Multimeter (optional): Siv los ntsuas qhov voltage, tam sim no, thiab tsis kam ua kom muaj kev sib txuas kom raug.
2, Cov qauv yooj yim ntawm peb xim LED
Tri xim LEDs feem ntau muaj peb tus pins sau ua R (liab), G (ntsuab), thiab B (xiav). Peb tus pins no txuas nrog rau peb lub teeb-emitting diodes hauv LED. Txhawm rau tswj cov emission ntawm txhua xim, peb yuav tsum muab qhov tsim nyog voltage thiab tam sim no rau peb tus pins sib cais.
3, Cov kauj ruam txuas
1. Txiav txim siab lub hwj huam mov voltage
Ua ntej, nws yog ib qho tsim nyog los txiav txim siab lub zog hluav taws xob uas koj siv. Qhov ntsuas hluav taws xob thiab tam sim no ntawm peb xim LEDs feem ntau yog muab rau hauv daim ntawv qhia khoom. Xyuas kom meej tias lub hwj chim mov voltage tsis tshaj qhov ntsuas voltage ntawm LED, thiab xaiv cov resistors tsim nyog raws li qhov xav tau los txwv qhov tam sim no.
2. Npaj cov khoom
Npaj peb xim LEDs, resistors, thiab cov khoom siv fais fab ntawm lub breadboard lossis Circuit Board. Yog tias siv lub khob cij, cov pins LED tuaj yeem muab tso rau hauv qhov sib thooj; Yog tias siv lub rooj tsav xwm hauv Circuit Court, soldering lossis lwm txoj kev sib txuas yuav tsum tau siv ua ntej.
3. Txuas lub resistor
Txuas lub resistor nyob rau hauv series ntawm txhua tus pin xim thiab lub hwj chim mov. Tus nqi ntawm cov resistor yuav tsum tau xam raws li qhov ntsuas voltage, tam sim no, thiab fais fab mov voltage ntawm LED. Feem ntau hais lus, Ohm txoj cai (V=IR) tuaj yeem siv los kwv yees tus nqi tiv thaiv. Nco ntsoov tias vim qhov tsis yog-linear volt ampere yam ntxwv nkhaus ntawm LED, nws yuav tsum tau xa mus rau LED cov ntaub ntawv phau ntawv lossis siv lub laij lej online rau kev suav tiag.
4. Txuas lub hwj huam mov
Txuas tus ncej zoo ntawm lub zog hluav taws xob mus rau lwm qhov kawg ntawm qhov resistor (piv txwv li qhov kawg txuas nrog LED tus pin), thiab txuas tus ncej tsis zoo ntawm lub zog hluav taws xob mus rau tus pin cim raws li cov cathode lossis hom anode ntawm txhua tus pins LED ( nyob ntawm seb hom LED). Yog hais tias lub LED yog ib hom cathode, ces tag nrho cov xim pins txuas nrog tus ncej zoo, thiab tus pin cathode feem ntau txuas nrog tus ncej tsis zoo; Yog tias LED yog hom co zoo, ces qhov rov qab yog qhov tseeb.
5. Kev sim thiab kev debugging
Tom qab kev sib txuas ua tiav, siv lub multimeter los xyuas seb qhov voltage thiab tam sim no hauv Circuit Court puas zoo li qub. Tom qab ntawd, koj tuaj yeem sim ua kom muaj zog txhua tus pin xim sib cais (lossis los ntawm microcontroller lossis lwm yam khoom siv tswj) thiab saib seb lub LED puas tuaj yeem tawm lub teeb ib txwm thiab tsim cov xim xav tau. Yog tias muaj teeb meem, koj tuaj yeem tshawb xyuas seb qhov kev sib txuas puas ruaj ntseg, seb tus nqi tiv thaiv puas yog, thiab seb lub zog hluav taws xob puas ruaj khov.
4, Kev ceev faj
Tsis txhob thim rov qab polarity: LEDs yog cov khoom siv polarized, thiab yog tias lawv thim rov qab, lawv yuav hlawv tam sim ntawd. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tau xyuam xim rau qhov zoo thiab tsis zoo polarity ntawm cov pins thaum txuas.
Xaiv qhov tsim nyog resistor: Tus nqi tsis kam ntawm tus resistor muaj qhov cuam tshuam tseem ceeb ntawm cov nyhuv luminous ntawm LED. Yog tias qhov kev tiv thaiv siab dhau lawm, LED yuav tsis teeb lossis teeb pom kev dim heev; Yog tias qhov kev tiv thaiv tsawg dhau, nws yuav hlawv tawm ntawm LED. Yog li ntawd, thaum xaiv ib tug resistor, nws yog tsim nyog los xam nws raws li specifications ntawm lub LED thiab lub hwj chim mov voltage.
Them mloog mus rau cov cua kub dissipation: LEDs tsim ib tug npaum li cas ntawm tshav kub thaum ua hauj lwm. Yog tias ua haujlwm ntev nyob rau hauv lub siab ci lossis qhov kub thiab txias, yuav tsum tau them nyiaj rau cov cua sov kom tsis txhob muaj kev kub ntxhov thiab kev puas tsuaj.
Kev siv hluav taws xob nyab xeeb: Nco ntsoov ua tib zoo saib xyuas kev siv hluav taws xob nyab xeeb thaum txuas cov hluav taws xob. Tsis txhob kov cov xov hlau los yog cov khoom sib txuas nrog koj txhais tes; Ua ntej txuas cov khoom siv hluav taws xob, nws yog ib qho tsim nyog yuav tsum tau xyuas seb qhov kev sib txuas hauv Circuit Court puas yog thiab tsis raug; Khaws kom deb ntawm cov khoom tawg yooj yim thiab tawg thaum ua haujlwm.
Los ntawm kev qhia txog cov kauj ruam saum toj no thiab kev ceev faj, kuv ntseeg tias koj tau paub txog txoj kev sib txuas ntawm peb xim LEDs. Hauv kev ua haujlwm zoo, kev hloov pauv tau yooj yim thiab kev ua kom zoo tuaj yeem ua raws li cov kev xav tau tshwj xeeb thiab cov xwm txheej kom ua tiav cov txiaj ntsig zoo tshaj plaws.
