LED Qhov Taw Qhia Qhov Taw Qhia Tus Menyuam: 5 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Feem ntau kuv coj kuv tus dev Rusio mus taug kev thaum lub hnub poob qis kom nws tuaj yeem ua si yam tsis tau kub heev. Qhov teeb meem yog tias thaum nws tawm ntawm txoj hlua qee zaum nws tau zoo siab heev thiab khiav mus ntxiv dua li qhov nws yuav tsum tau thiab nrog lub teeb qis thiab lwm tus dev nws tsis yooj yim pom nws tam sim.

Txhawm rau daws qhov no kuv tau muaj lub tswv yim los ua tus dev dev uas yuav ci liab thaum nws mus deb ntawm kuv, raws li qhov xav tau ntxiv Kuv xav ua nws yam tsis tau siv lub microcontroller lossis lub cajmeem los ua kom nws nkag tau yooj yim li lwm tus neeg tsim khoom.

**** Tsis lees paub ****

Txoj haujlwm no khaws cov walkie talkie tas li "tham", qhov no ua rau cuam tshuam cov zaus uas nws tau siv nyob ze ntawm cov emitter uas yuav tsis raug cai hauv koj lub tebchaws (thiab txawm hais tias nws tsis raug cai nws tsis yog qhov zoo ua). Qhov no tau raug hla thaum lub sijhawm tsim thiab yuav hais nyob rau yav tom ntej.

Khoom siv

• pheej yig tshaj ntawm walkie talkies koj tuaj yeem nrhiav tau
• 2x555 ib
• 1x 2n2222A transistor
• 2x TIP120 transistor
• 7x 1Kohm 1/4W resistor
• 1x 5.6Kohm 1/4W resistor
• 1x 6.5 ohm 1/4W resistor
• 2x 220ohm 1/2W resistor
• 1x 470nF 10V capacitor
• 1 x 10nF 10V capacitor
• 3 x siv diodes (Kuv siv 1n4004)
• LEDs ntawm koj cov xim nyiam

Kauj Ruam 1: Walkie Talkie Disassembly

Lub phiaj xwm yog siv kev sib txuas lus ntau ntawm pheej yig walkie talkie ua qhov ntsuas nyob deb deb, rau qhov thawj ntu no yog muab nws tshem tawm thiab tshuaj xyuas seb nws ua haujlwm li cas!

Feem ntau pheej yig walkie talkies siv tus hais lus ua lub mic ib yam nkaus, lub luag haujlwm hloov pauv thaum nias lub pob los tham thiab peb yuav siv qhov no rau peb kom zoo dua. Ib lub xov tooj cua sib tham yuav txuas ntxiv "tham" thiab lwm qhov "mloog", yog tias qhov mloog kawg tsis tuaj yeem hnov cov lus tham nws txhais tau tias lawv nyob deb thiab peb tuaj yeem siv qhov ntawd los ua lub teeb ci.

Kauj Ruam 2: "Tham" Walkie Talkie

Txhawm rau ua tiav qhov kev sib tham tham ua ntej peb yuav tsum khaws lub "tham" khawm nias, rau qhov no khawm cov neeg tuaj yeem tuaj yeem ua ke ua ke.

Qhov yuav tsum tau tham txhua lub sijhawm yuav ua rau yuag yuag yuag heev yog li peb yuav siv lub tshuab hluav taws xob teeb liab mus rau qhov twg peb lub mic/hais lus yuav tsum mus. Lub tshuab hluav taws xob yuav yog 555 qhov ua tau zoo ntawm lub roj teeb pob ntawm walkie talkie (6V ntawm kuv qhov teeb meem), cov khoom siv hluav taws xob tuaj yeem pom hauv daim duab thiab cov khoom siv tau xaiv xaiv yuav tsum tsim kom muaj qee yam ze rau ntawm 1KHz square yoj ntawm qhov tso tawm.

Nws yog ib qho tseem ceeb los tshuaj xyuas qhov kawg ntawm tus neeg hais lus mus rau qhov tsis zoo ntawm lub roj teeb pob vim qhov no yuav raug muab muag rau hauv av ntawm lub tshuab hluav taws xob, lwm qhov kawg txuas nrog lub xov tooj uas sau tias "tawm". Tsis tas li ntawd cov txiaj ntsig ntawm 555 tau txiav nrog lub diode kom muaj qhov hluav taws xob hauv qhov ntau yam zoo ib yam li qhov hluav taws xob tsim thaum tham nrog lub mic.

Thaum kawg peb ntxiv LED kom paub thaum nws nyob thiab peb kaw lub walkie talkie nrog txhua qhov kev hloov pauv tshiab sab hauv.

*Kev xa tawm falstad txt yog muab yog tias koj xav tinker nrog cov khoom muaj nqis.

Kauj Ruam 3: "Mloog" Walkie Talkie

Tom qab ntawd peb txuas ntxiv mus txhawm rau tshem tawm lub xov tooj cua walkie talkie zaum ob, lub sij hawm no lub khawm tham tsis raug nias thiab cov xov hlau uas mus rau tus hais lus yuav raug siv los ua peb cov tswv yim los xyuas seb lub teeb yuav tsum qhib.

Thawj ntu ntawm Circuit yog ib nrab nthwv dej rectifier uas them tus nqi hluav taws xob thaum lub teeb liab tshwm sim (peb nyob ze txaus kom hnov lub tshuab xa tawm) thiab ib qho sib txuas resistor kom tso lub capacitor thaum lub teeb liab nkag mus tsis tau (nyob deb ntawm transmitter). Tsis tas li ntawd tus tiv thaiv ntawm tus nqi zoo ib yam rau tus hais lus tau muab tso rau hauv nws qhov chaw los dag ntxias cov khoom siv hluav taws xob qub los ua haujlwm raws li xav tau.

Qhov hluav taws xob tso tawm ntawm lub rectifier tau siv los ua tswv yim rau schmitt txhais (sib piv nrog sib txawv ntawm thiab tawm qhov pib) ua nrog 555 IC, peb siv lub diode raws li qhov ntsuas hluav taws xob muab rau qhov ntsuas qhov ntsuas qhov ze ze 0.45V thiab OFF ntawm qhov pib qhov hluav taws xob ib 0,23v. Cov txiaj ntsig ntawm schmitt ua rau tsav TIP120 uas muaj hwj chim ntawm cov LEDs liab thaum peb lub xov tooj cua tsis tuaj yeem hnov lwm lub xov tooj cua tham.

Raws li qhov xav tau tshwj xeeb kuv ntxiv lub logic inverter (los ntawm kev siv 2n2222a) los tsav qhov thib ob TIP120 uas yuav qhib lub teeb ntsuab thaum tus dev nyob hauv thaj tsam ntawm "hais lus" walkie talkie.

Thaum kawg txhua yam tau muag nrog qhov tshwj xeeb ntawm LEDs thiab muab tso rau hauv lub thawv (thawj lub xov tooj cua tham tau me me dhau), qhov kev sib txuas xaus rau LEDs tau tso tseg rau kev sib txuas tom qab thiab lub zog ntawm LED qhia tau ntxiv ua qhov kawg kov.

*Falstad txt ntshuam raug txuas ib yam nkaus, qhov kev hloov pauv hauv kev nkag mus siv sijhawm li ob feeb hauv lub neej tiag tiag kom hloov ntawm teeb tab sis hauv kev sim nws yuav siv sijhawm tas mus li vim yog qhov ua piv txwv loj.

Kauj Ruam 4: Teeb thiab LEDs

Kauj ruam kawg yog tso cov LEDs rau ntawm hlua (Kuv tau ua kuv tus kheej ntsuas cov hlua los ntawm ob peb txoj hlua khi ua ke), Kuv tau mus nrog 3 pab pawg sib tw ntawm 2 series LEDs rau ob qho xim liab thiab ntsuab. Tag nrho cov hluav taws xob ntawm cov khoom siv yuav tsum muaj ntau dua li qhov poob rau pem hauv ntej ntawm cov LEDs ntxiv rau qhov poob hauv transistor uas yog li 1.5V rau TIP120. Hauv peb qhov xwm txheej peb muaj:

liab: (2.2V)*2 + 1.5V = 5.9V <6.0V

ntsuab: (2.0V)*2 + 1.5V = 5.5V <6.0V

Nrog kev suav ua tiav peb mus rau tom ntej thiab thawb qee qhov me me rau ob txhais ceg ntawm txhua LED thiab lawv tau muab tso rau hauv qhov chaw thiab muag ntawm lwm sab nrog cov xov hlau me me (Kuv khaws qee qhov los ntawm cov xov tooj ethernet qub). Tom qab ntawd qee qhov ntxiv tau ntxiv los tiv thaiv tus dev los ntawm ib qho taw tes me ntsis ntawm LEDs ob txhais ceg lossis cov laug txuas. Thaum kawg ob qhov kawg ntawm txhua pawg LED tau muab muag rau lub davhlau ya nyob twg uas tau npaj ua ntej ntawm "Mloog" walkie talkie.

Kauj Ruam 5: Taug Kev Taug Kev