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IR Remote Extender (Ntu-1): 4 Cov Kauj Ruam
IR Remote Extender (Ntu-1): 4 Cov Kauj Ruam

Video: IR Remote Extender (Ntu-1): 4 Cov Kauj Ruam

Video: IR Remote Extender (Ntu-1): 4 Cov Kauj Ruam
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IR Chaw Txuas Hluav Taws Xob (Ntu-1)
IR Chaw Txuas Hluav Taws Xob (Ntu-1)

Hav sawv daws!

Txoj haujlwm no piav qhia yuav ua li cas tsim IR cov chaw taws teeb tswj txuas/rov ua dua los tswj koj cov khoom siv hluav taws xob los ntawm qhov chaw nyob deb.

Ib qho ntsuas hluav taws xob IR tau txais IR teeb liab los ntawm kev tswj chaw taws teeb thiab ob IR LEDs rov tso lub teeb liab rau lub cuab yeej. Koj tuaj yeem tso IR tso tawm LEDs ze rau lub cuab yeej uas koj xav tswj hwm siv qee lub xov hlau thiab ua kom lub tsev tseem ceeb nyob ze qhov chaw tswj chaw taws teeb. Lub Circuit Court muaj peb ntu tseem ceeb, IR tus qauv txais, 555 lub sijhawm teem tau teeb tsa ua oscillator thiab theem tso tawm/tso tawm. Peb yuav piav qhia txog kev ua haujlwm hauv Circuit hauv qab no.

Kauj Ruam 1: Cov Cheeb Tsam Yuav Tsum Tau

R1 = 1k

R2 = 3k3

R3 = 10k

R4 = 15k

R5 = 4k7 trimmer

R6 = 2k2

R7 = 470R

R8 = 47R - 1/2W

C1 = 47uF - 16V

C2 = 1n - polyester

C3 = 100uF - 16V

C4 = 47uF - 16V

Z1 = 5V1 zener

Q1 = BC549C

Q2 = BC337

IC1 = NE555

LED1 = liab LED

LED2, 3 = IR LED

IR receiver = TSOP138 or IR38DM

Kauj Ruam 2: Kev piav qhia Circuit

Kev piav qhia Circuit
Kev piav qhia Circuit
Kev piav qhia Circuit
Kev piav qhia Circuit

IR teeb liab tau txais los ntawm TSOP1738. TSOP1738 yog lub tshuab txais infrared ntawm 38KHz. Ntawm qhov tso tawm ntawm lub tshuab txais hluav taws xob, peb tau txais lub teeb liab demodulated uas txhais tau tias peb tau txais kev tswj qis qis qis. Lub tshuab txais hluav taws xob tau txais hluav taws xob los ntawm C1, R1 thiab Z1 uas ua rau lub zog hluav taws xob 5V. Nrog tsis tau txais lub teeb liab, lub ntsuas hluav taws xob pom tau siab thiab Q1 nyob, yog li tus pin 4 ntawm IC yog LOW thiab 555 lub sijhawm nyob hauv lub xeev pib dua. Q1 tseem ua raws li qib hloov pauv uas hloov pauv 5V teeb liab ntawm TSOP1738 txog 9V teeb liab rau IC1.

Thaum HIGH tswj cov pa taws tau tshwm sim ntawm TSOP1738 cov zis ces lub sijhawm 555 (uas tau teeb tsa ua tus oscillator) pib oscillate yog qhov ua ntej ua ntej, rau lub sijhawm ntawm txhua cov ntaub ntawv mem tes. Qhov ntawd txhais tau tias ntawm tus pin 3 peb tau txais lub teeb liab uas zoo ib yam li qhov hloov pauv qhov teeb liab. Nws muaj cov khoom tiv thaiv kab mob thiab tiv thaiv kab mob sib kis. Qhov oscillating zaus ntawm 555 timers tau teeb tsa los ntawm R4 thiab C2 thiab lub sijhawm mem tes tau muab los ntawm:

T = 1,4 R4 C2

Trimmer R5 yog siv los kho qhov suab oscillating zaus ntawm 38KHz. Qhov ntawd sib npaug rau tus neeg nqa khoom zaus.

Cov theem tso tawm yog tsim los ntawm R6, Q2, ib qho LED liab, ob IR LEDs thiab ob qho kev txwv tam sim no R7 thiab R8. Q2 txuas nrog ua qhov ntsuas hluav taws xob, uas txhais tau tias thaum lub hauv paus ntawm Q2 yog HIGH transistor yog ON tso cai rau tam sim no ntws los ntawm LEDs. LED tam sim no tau teeb tsa los ntawm R7 thiab R8 raws li cov qauv pom hauv daim duab saum toj no.

Yog li IR LEDs tau tshaj tawm lub teeb liab uas zoo ib yam li lub teeb liab tau txais los ntawm TSOP1738, uas txhais tau tias nws rov ua dua lub teeb liab tau txais ntawm kev siv hluav taws xob ntau dua. Liab LED tau siv los ua qhov ntsuas qhov pom ntawm lub teeb liab tso tawm. Lub voj voog tuaj yeem siv tau los ntawm roj teeb 9V.

Kauj Ruam 3: PCB Tsim

PCB Tsim
PCB Tsim

PCB tau tsim los siv Cadence Eagle.

Saum toj no yog lub rooj teeb tsa rau PCB thiab kuv tau faib cov ntaub ntawv Gerber rau koj siv.

Kauj Ruam 4: Kev Tsim PCB

Kev Tsim Khoom PCB
Kev Tsim Khoom PCB
Kev Tsim Khoom PCB
Kev Tsim Khoom PCB

Koj tuaj yeem xa koj cov ntaub ntawv Gerber rau cov chaw tsim khoom kom tau txais koj li PCBs.

Kuv tau xa cov ntaub ntawv Gerber ntawm LionCircuits rau kuv PCB kom tau txais kev tsim khoom. Lawv muab tus nqi tsim nyog thiab PCBs zoo hauv tsuas yog 5 hnub.

Kuv yuav tshaj tawm ntu-2 ntawm cov lus qhia no nyob rau lub lim tiam tom ntej thaum kuv tau txais kuv cov laug cam.

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