Wannan aikin yana bayyana yadda za'a iya motsa motar DC gaba ko baya ta amfani da TV ko DVD mai ramut.Manufar ita ce gina direban mota mai sauƙi na bi-direction wanda ke amfani da infrared (IR) 38kHz pulse jirgin ƙasa don manufar ba tare da amfani da kowane microcontroller ko shirye-shirye ba.

An nuna samfurin marubucin a hoto na 1.

Circuit da aiki

An nuna zane-zane na aikin a cikin siffa 2. An gina shi a kusa da IR mai karɓa module TSOP1738 (IRRX1), shekaru goma counter 4017B (IC2), direban mota L293D (IC3), PNP transistor BC557 (T1), transistor BC547 NPN guda biyu ( T2 da T3), 5V kayyade samar da wutar lantarki (IC1), da baturi 9V.

Ana haɗa baturin 9V ta diode D1 zuwa mai sarrafa wutar lantarki 7805 don samar da 5V DC da ake buƙata don aikin.Ana amfani da Capacitor C2 (100µF, 16V) don ƙin yarda.

A ƙarƙashin yanayin al'ada, fitarwa fil 3 na IR module IRRX1 yana kan ma'ana mai girma, wanda ke nufin transistor T1 da aka haɗa da shi an yanke shi kuma don haka tashar mai karɓar sa tana cikin ma'ana.Mai tarawa na T1 yana tafiyar da bugun agogo na shekaru goma counter IC2.

A kan nuna nesa zuwa tsarin IR da danna kowane maɓalli, ƙirar tana karɓar bugun 38kHz IR daga ramut.Ana juya waɗannan bugun jini a mai karɓar T1 kuma ana ba su fil ɗin shigarwar agogo 14 na shekaru goma counter IC2.

Harshen IR mai zuwa yana haɓaka ƙididdiga na shekaru goma daidai gwargwado (38kHz) amma saboda kasancewar RC tace (R2 = 150k da C3 = 1µF) a fil ɗin shigarwar agogo 14 na IC2, jirgin na bugun jini yana bayyana azaman bugun jini guda ɗaya a counter.Don haka, yayin danna kowane maɓalli, mai ƙididdigewa yana ci gaba da ƙidaya ɗaya kawai.

Lokacin da maɓallin nesa ya fito, capacitor C3 yana fitarwa ta hanyar resistor R2 kuma layin agogo ya zama sifili.Don haka duk lokacin da mai amfani ya danna kuma ya saki maɓalli a cikin remote ɗin, na'urar tana karɓar bugun bugun jini guda ɗaya a shigar da agogon sa kuma LED1 yana haskakawa don tabbatar da cewa an karɓi bugun bugun.

A lokacin aiki za a iya samun dama guda biyar:

Kaso 1

Lokacin da aka danna maɓallin nesa, bugun farko ya zo kuma aikin O0 na shekaru goma (IC2) yana ƙaruwa yayin da fil O1 zuwa O9 yayi ƙasa, wanda ke nufin transistor T2 da T3 suna cikin yanayin yankewa.Masu tarawa na duka transistor ana jan su zuwa babban matsayi ta 1-kilo-ohm resistors (R4 da R6), don haka duka tashoshin shigar IN1 da IN2 na direban mota L293D (IC3) sun zama babba.A wannan mataki, motar tana cikin yanayin kashewa.

Kaso 2

Lokacin da aka sake danna maɓalli, bugun bugun jini na biyu da ya isa layin CLK yana ƙara maƙiyi ɗaya.Wato lokacin da bugun bugun jini na biyu ya zo, O1 na IC2 yana karuwa, yayin da sauran abubuwan da suka rage ba su da yawa.Don haka, transistor T2 yana gudanarwa kuma an yanke T3.Ma'anar ƙarfin lantarki a mai karɓar T2 yana raguwa (IN1 na IC3) kuma ƙarfin lantarki a mai karɓar T3 ya zama babba (IN2 na IC3) kuma abubuwan IN1 da IN2 na direban IC3 sun zama 0 da 1, bi da bi.A cikin wannan yanayin, motar tana juyawa zuwa gaba.

Kaso 3

Lokacin da aka sake danna maɓalli, bugun bugun jini na uku da ya isa layin CLK yana ƙara ƙima da ɗaya.Don haka fitowar O2 na IC2 yana ƙaruwa.Kamar yadda babu abin da aka haɗa da O2 pin da fitarwa fil O1 da O3 sun yi ƙasa, don haka duka transistor T2 da T3 suna zuwa yanki mai yankewa.

Tashoshin tara na duka transistor biyu ana ja su zuwa babban matsayi ta 1-kilo-ohm resistors R4 da R6, wanda ke nufin tashoshin shigar IN1 da IN2 na IC3 sun zama babba.A wannan mataki, motar tana sake kasancewa a cikin yanayin.

Kaso 4

Lokacin da aka sake danna maɓalli sau ɗaya, bugun bugun jini na huɗu da ya isa layin CLK yana ƙara ƙima da ɗaya a karo na huɗu.Yanzu fitowar O3 na IC2 yana da girma, yayin da sauran abubuwan da suka rage ba su da yawa, don haka transistor T3 ke gudanarwa.Ma'anar ƙarfin lantarki a mai karɓar T2 ya zama babba (IN1 na IC3) kuma ƙarfin lantarki a mai karɓar T3 ya zama ƙasa (IN2 na IC3).Don haka, abubuwan shigar IN1 da IN2 na IC3 suna cikin matakan 1 da 0, bi da bi.A cikin wannan yanayin, motar tana jujjuyawa a baya.

Kaso 5

Lokacin da aka danna maɓalli a karo na biyar, bugun bugun na biyar da ya isa layin CLK yana ƙara ƙima da ɗaya.Tun da O4 (filin 10 na IC2) an haɗa shi zuwa Sake saita fil 15 na IC2, dannawa na biyar yana kawo adadin shekaru goma na IC zuwa yanayin sake saiti tare da O0 high.

Don haka, da'irar tana aiki azaman direban motar mai bi-directional wanda aka sarrafa tare da na'ura mai nisa ta infrared.

Gina da gwaji

Ana iya haɗa kewayen a kan Veroboard ko PCB wanda ainihin girmansa ya nuna a cikin siffa 3. An nuna shimfidar abubuwan da aka haɗa don PCB a cikin siffa 4.

Zazzage PDFs na PCB da Tsarin Bangaren:danna nan

Bayan hada da'irar, haɗa baturin 9V a fadin BATT.1.Koma Teburin Gaskiya (Table 1) don aiki kuma bi matakan da aka kwatanta a cikin Case 1 zuwa Case 5 a sama.

Lisa ta gyara