Cov txheej txheem:

LED Teeb Lub Teeb Cim: 6 Kauj Ruam (nrog Duab)
LED Teeb Lub Teeb Cim: 6 Kauj Ruam (nrog Duab)

Video: LED Teeb Lub Teeb Cim: 6 Kauj Ruam (nrog Duab)

Video: LED Teeb Lub Teeb Cim: 6 Kauj Ruam (nrog Duab)
Video: Lub Zog Nruab Nrog (Hmong Dubbed) 2024, Kaum ib hlis
Anonim
LED Flash Lub Teeb Cim
LED Flash Lub Teeb Cim

Koj puas yog tus tshiab rau Soldering thiab xav kawm cov hauv paus nrog cov khoom siv yooj yim?

Yog tias koj tab tom nrhiav rau txoj hauv kev yooj yim kom kawm tau qhov muag lossis tsuas yog xav ua lub cuab yeej me me nqa tau, Qhov LED Flash nyem no yog qhov kev xaiv zoo. Qhov LED Flash Light Badge PCB no yog tsim los kawm paub qhov muag.

Nta:

  • Tsim yooj yim thiab suav qhov tsawg
  • Yooj yim hloov lub roj teeb CR2032
  • Ceev rau los ua ke
  • Tus kheej teeb nyem thaum muaj xwm ceev?
  • Zoo meej kom muaj rau lub hwj chim tawm

Khoom siv

  • 5 hli dawb LED
  • 6mm Momentary Mini Push Button Hloov
  • 10 ohm tiv thaiv
  • CR2032 Tus Tuav Roj Teeb thiab CR2032 Npib cell Roj Teeb
  • Kev cai PCB: Los ntawm pcbway.com

Kauj ruam 1: Saib Video

Image
Image

Kauj Ruam 2: Schematics:

PCB Tsim
PCB Tsim

Kauj Ruam 3: Kev Ntseeg:

Yog li … koj tsuas yog xav kom teeb lub LED. Koj yuav tsum siv tus tiv thaiv dab tsi?

LEDs muaj tus yam ntxwv hu ua "rau pem hauv ntej qhov hluav taws xob" uas feem ntau pom ntawm cov ntaub ntawv teev tseg raws li Vf. Lub zog tam sim no yog qhov hluav taws xob "poob" hauv LED thaum ua haujlwm ntawm qee qhov siv tam sim no, feem ntau txhais tau tias yog kwv yees li 20 milliamps (mA), piv txwv li, 0.020 amps (A). Vf nyob ntawm qhov tseem ceeb ntawm cov xim LED, tab sis qhov tseeb nws txawv me ntsis ntawm LED mus rau LED, qee zaum txawm tias nyob hauv tib lub hnab ntawm LEDs.

V hauv peb cov mis yog pom los ntawm kev rho tawm LED lub zog rau tom ntej los ntawm qhov hluav taws xob ntawm lub zog hluav taws xob. 3 V (lub zog siv hluav taws xob) - 2.8 V (LED qhov poob qis) = 0.2 V Hauv qhov no, peb nyob nrog 0.2 V uas peb yuav ntsaws rau hauv peb li V = I × R formula.

Qhov tom ntej peb yuav tsum paub yog I, uas yog tam sim no peb xav tsav LED ntawm. LEDs muaj qhov ntsuas siab tshaj plaws tam sim no (feem ntau tau teev tseg yog Yog, lossis Imax ntawm cov ntawv teev npe). Tus nqi tam sim no txhawm rau tsom rau nrog tus qauv LED yog 20 mA.

Los ntawm kev siv ohm txoj cai piv txwv li V = I × R, Voltage sib npaug lub sijhawm tam sim no tsis kam

0.2 V = 20 mA × R

los yog

0.2 V / 20 mA = R

Ua ntej R = 0.2 V / 20 mA = 0.2 V / 0.02 A = 10 Ω

Kauj Ruam 4: PCB Tsim

PCB Tsim
PCB Tsim

Cov phiaj xwm phiaj xwm tau tsim los siv Autodesk Fusion 360. Thiab PCB tsim tau ua tiav siv KiCad.

Kauj Ruam 5: Kev Cai PCB

Kev cai PCB
Kev cai PCB
Kev cai PCB
Kev cai PCB

Kauj Ruam 6: Sib Sau Ua Ke

Sib Sau Ua Ke
Sib Sau Ua Ke
Sib Sau Ua Ke
Sib Sau Ua Ke

Ua Tsaug Rau Kev Nyeem Ntawv

yog tias koj nyiam txoj haujlwm no thov txiav txim siab pov npav qhov kuv nkag mus rau PCB Design Challenge.

Txhua qhov Project cov ntaub ntawv tau nce ntawm Github, mus ua!

Yog tias koj xav yuav cov PCB no, koj tuaj yeem xaj nws los ntawm Pcbway qhov kev sib tham ua haujlwm nplooj ntawv

Zoo Siab Ua!

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