Cov txheej txheem:

ARDUINO FM RADIO NROG NROG THERMOMETER: 5 Kauj Ruam
ARDUINO FM RADIO NROG NROG THERMOMETER: 5 Kauj Ruam

Video: ARDUINO FM RADIO NROG NROG THERMOMETER: 5 Kauj Ruam

Video: ARDUINO FM RADIO NROG NROG THERMOMETER: 5 Kauj Ruam
Video: Amazing arduino project 2024, Kaum ib hlis
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ARDUINO FM RADIO NROG KAWG THERMOMETER
ARDUINO FM RADIO NROG KAWG THERMOMETER
ARDUINO FM RADIO NROG KAWG THERMOMETER
ARDUINO FM RADIO NROG KAWG THERMOMETER

Cov xov tooj cua FM tshaj tawm, siv rau xov tooj cua FM tshaj tawm hauv xov tooj cua, sib txawv ntawm ntau qhov chaw hauv ntiaj teb. Hauv Tebchaws Europe, Australia [1] thiab Africa ((txhais tias yog International Telecommunication Union (ITU) cheeb tsam 1)), nws nthuav dav los ntawm 87.5 txog 108 megahertz (MHz) - tseem hu ua VHF Band II - thaum nyob hauv Amelikas (ITU cheeb tsam 2)) nws txawv ntawm 88 txog 108 MHz. Xov tooj cua FM tshaj tawm hauv Nyij Pooj siv 76 txog 95 MHz. Lub Koom Haum Xov Tooj Cua thiab Xov Tooj Cua Thoob Ntiaj Teb (OIRT) nyob sab Europe sab hnub tuaj yog los ntawm 65.8 txog 74.0 MHz, txawm hais tias cov tebchaws no tam sim no feem ntau siv 87.5 txog 108 MHz band, zoo li hauv tebchaws Russia. Qee lub tebchaws tau tso tseg txoj haujlwm OIRT thiab tau hloov mus rau 87.5 txog 108 MHz band. Qhov xov tooj cua hloov pauv tau tshwm sim hauv Tebchaws Meskas thaum xyoo 1930s; lub kaw lus tau tsim los ntawm Asmeskas tus kws tsim hluav taws xob Edwin Howard Armstrong. Txawm li cas los xij, kev tshaj tawm FM tsis tau nthuav dav, txawm tias nyob hauv North America, txog rau xyoo 1960.

Lub teeb liab tuaj yeem nqa los ntawm AM lossis FM xov tooj cua yoj.

FM muaj suab nrov zoo dua (RFI) tsis lees paub dua li AM, raws li tau qhia hauv qhov kev ua yeeb yam hauv New York qhov kev tshaj tawm los ntawm General Electric xyoo 1940. Xov tooj cua muaj ob qho AM thiab FM txais. Nrog ib lab-volt arc ua qhov cuam tshuam cuam tshuam nws, AM tau txais tsuas yog ua rau muaj suab nrov zoo li qub, thaum FM txais tau meej meej rov tsim cov nkauj los ntawm Armstrong txoj kev sim FM xa xov W2XMN hauv New Jersey.

Hauv kev sib txuas lus hauv xov tooj cua thiab teeb liab, kev hloov pauv zaus (FM) yog kev hloov pauv cov ntaub ntawv hauv cov khoom thauj khoom los ntawm kev hloov pauv zaus tam sim ntawm nthwv dej. Hauv kev hloov pauv zaus sib xws, xws li xov tooj cua FM tshaj tawm ntawm lub suab piav qhia lub suab lossis suab paj nruag, qhov cuam tshuam tam sim ntawd, qhov sib txawv ntawm qhov zaus ntawm tus neeg nqa khoom thiab nws qhov nruab nrab zaus, yog sib piv rau cov teeb liab hloov pauv.

Ntau ntawm no ntawm Wikipedia!

Kauj Ruam 1: Txiav Koj Qhov

1. Arduino UNO lossis Nano

2. Display SSD1306-Dawb 128X64 OLED I2C

3. Arduino I2C RTC DS1307 AT24C32 Lub Sijhawm Teev Sijhawm Tiag

4. DALLAS DS18B20 18B20 TO-92 Thermometer Kub Sensor

5. FM Stereo Module Xov tooj cua Module RDA5807M

6.1/4W Watt Metal Film Resistor 0.25W-10K… 3 daim

7.1/4W Watt Metal Film Resistor 0.25W-4K7… 1pieces

8. Push Button Switch 3pieces

9. Mini Digital DC 5V Amplifier Board Class D 2*3W USB Power PAM8403

10. Speaker Mini Amplifier 3W 4R (3 Watts 4 Ohms)….2 daim

Kauj ruam 2: Tsim Circuit Court

Tsim Circuit Court!
Tsim Circuit Court!
Tsim Circuit Court!
Tsim Circuit Court!
Tsim Circuit Court!
Tsim Circuit Court!
Tsim Circuit Court!
Tsim Circuit Court!

Kauj ruam 3: Upload Code

Kauj ruam 4: Tsim Koj Cov Ntaub Ntawv

Tsim Koj Cov Ntaub Ntawv!
Tsim Koj Cov Ntaub Ntawv!
Tsim Koj Cov Ntaub Ntawv!
Tsim Koj Cov Ntaub Ntawv!
Tsim Koj Cov Ntaub Ntawv!
Tsim Koj Cov Ntaub Ntawv!

Kauj Ruam 5: Txaus siab rau Xov Tooj Cua FM !

Txaus siab rau xov tooj cua FM !!!
Txaus siab rau xov tooj cua FM !!!

Kev tshaj tawm xov tooj cua FM yog ib txoj hauv kev siv xov tooj cua tshaj tawm uas siv thev naus laus zis zaus (FM) thev naus laus zis. Tsim tawm xyoo 1933 los ntawm Asmeskas tus kws tsim txuj ci Edwin Armstrong, nws tau siv thoob ntiaj teb los muab lub suab ncaj ncees tshaj tawm hauv xov tooj cua. Kev tshaj tawm xov tooj cua FM muaj peev xwm ua tau lub suab zoo dua li tshaj tawm AM, tus thawj coj sib tw tshaj tawm xov tooj cua thev naus laus zis, yog li nws tau siv rau feem ntau tshaj tawm suab paj nruag. Cov xov tooj cua FM siv VHFfrequencies. Lub sij hawm "FM band" piav qhia cov zaus hauv ib lub tebchaws uas tau mob siab rau tshaj tawm FM.

Cov xov tooj cua tshaj tawm [hloov kho] Kab lus tseem ceeb: FM tshaj tawm xov tooj cua thoob plaws ntiaj teb, FM tshaj tawm hauv xov tooj cua poob hauv VHF ib feem ntawm xov tooj cua. Feem ntau siv 87.5 txog 108.0 MHz, [1] lossis qee qhov ntawm nws, nrog qee qhov kev zam: Hauv yav dhau los Soviet koom pheej, thiab qee lub tebchaws qub Eastern Bloc, cov laus dua 65.8-74 MHz band kuj tseem siv. Kev tso tawm zaus yog nyob rau ntawm 30 kHz. Cov qhab no, qee zaum hu ua OIRT band, tau maj mam muab tshem tawm hauv ntau lub tebchaws. Hauv cov tebchaws ntawd 87.5-108.0 MHz band raug xa mus rau CCIR band Hauv Nyij Pooj, siv band 76-95 MHz.

Ntau ntawm wiki

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