Lub Hnab Suab-rau-lub Teeb Pom Kev, Tsis Muaj Microprocessor-Tus Kws Ua Haujlwm Music Junior: 5 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:31

Los ntawm qsFollow Ntau los ntawm tus sau:

Me dua li 9-volt roj teeb uas ua rau nws muaj zog, Musicator Jr. qhia lub suab nws 'hnov' (los ntawm Electret Microphone) raws li lub teeb pom kev hloov pauv.

Me me txaus kom haum rau hauv koj lub hnab tsho, nws tseem tuaj yeem tso rau ntawm lub tiaj tiaj kom saib xyuas lub suab nyob ib puag ncig nws. Lub roj teeb alkaline yuav yooj yim zog nws 20 lossis ntau dua teev.

Kauj Ruam 1: Qhov Yuav Tsum Tau Ua

'Lub hlwb' ntawm txoj haujlwm no yog LM358 lub hom phiaj dav dav op-amp uas raug nqi qis dua 30-xees. Thawj ib nrab ntawm Circuit Court yog lub tshuab ua kom nrov nrov uas txhawb nqa 500-micro-volts los ntawm lub tshuab electret mic txog li 1-volt. Cov theem no feem ntau hu ua 'Kab-qib' thiab tuaj yeem siv los tsav peb cov LEDs, lub suab amp, lossis txawm tias cov pins nkag ntawm Arduino processor. Qhov thib ib nrab ntawm op-amp yog siv hluav taws xob-rau-tam sim no hloov pauv, uas txwv qhov ci ci ntawm LEDs rau 10mA lossis tsawg dua. Qhov ua tiav cov npe hauv qab no: LEDs. Ib qho kev sib xyaw ua ke tuaj yeem siv tau, tsuav yog lawv tag nrho cov hluav taws xob mus rau tom ntej yog tsawg dua 8. Piv txwv li, koj tuaj yeem muaj txog li 4 amber LEDs nrog 1.8v Vf. Electret microphone - Kuv tau txais kuv li ntawm eBay rau qis dua 25 -centLM358 - Op- amp (8-tus pin DIP). Kuj muaj nyob ntawm eBay.2N4401-NPN dav dav transistor (lwm lub suab NPN-hom yuav zaum ua haujlwm ib yam nkaus) 10k resistor x 52.2k resistor x 1470k resistor x 1 (Tseem tuaj yeem yog 330k raws li sau rau hauv Circuit) 100-ohm resistor x 11uF capacitor0.1uF capacitor9-volt roj teeb thiab txuas Txuas-board thiab txuas ntu. Qhov nqi tag nrho: $ 3 lossis tsawg dua.

Kauj ruam 2: Schematic

Ua tsaug rau echoskope rau qhov txheej txheem no!

Koj tuaj yeem rub tawm daim ntawv theej loj ntawm Circuit Court ntawm no. Koj tuaj yeem rub tawm daim ntawv theej hauv pdf ntawm no.

Kauj ruam 3: Sib dhos

Kev tsim kho yog qhov yooj yim heev -tsuas yog kev ceev faj yog lub tshuab electret mic yog polarized - sab uas txuas nrog rau sab nrauv yog hauv av (lossis Tsis Zoo). Saib daim duab kawg rau tus pin -tawm ntawm qhov kuv tau siv - ceeb toom kev sib txuas rau lub plhaub los ntawm - tus pin.

Thawj daim duab yog ua tiav lub rooj tsavxwm los ntawm ob sab, tom qab ntawv 'X-Ray' duab los ntawm sab laug.

Kauj ruam 4: Tua Nws

'Thaum nws tau sim thiab ua haujlwm, koj yuav pom tias nws yog ib qho kev sib tham tiag tiag ntawm koj tog tom ntej lossis kev seev cev. Koj tuaj yeem plam nws sab hauv lub hnab tsho nrog lub perfboard sab nraum. Lub mic yuav khaws lub suab los ntawm ib puag ncig koj thiab cov LEDs yuav 'ua' rau nws. Kov zaum kawg - txiav ib daim luv ntawm cov dej ntshiab los yog txhais kom meej kom haum rau saum cov LEDs. Qhov no yuav nthuav lub teeb kom muab rau koj 'bar ntawm lub teeb pom kev zoo. Qhov duab kawg yog kuv qhov kev sim rau txoj haujlwm no.

Kauj Ruam 5: Ntxiv Teeb Ntxiv (thiab lej)

Txhawm rau tso cov transistor tso tawm ntau LEDs, pib los ntawm kev ua kom koj muaj LEDs siab tshaj plaws ntawm txhua 'hlua' (ib qho hauv kab ntawv): Yog tias koj cov khoom siv yog V, tom qab ntawv rho tawm 2 thiab sib ntxiv los ntawm 0.9 Tom qab ntawd, rau txhua tus Dawb, Xiav, Paj yeeb lossis Violet LED, rho tawm 3; rau lwm tus (Liab, Daj, Txiv kab ntxwv, Ntsuab) rho tawm 2, kom txog thaum koj ze li 0 raws li koj tuaj yeem ua tau. Qhov no yog kev sib xyaw ua ke uas muab rau koj feem ntau LED rau lub zog qis tshaj.

Txhua 2N4401 (lossis BC337) tuaj yeem tuav txog 8 'hlua' - tab sis koj yuav tsum ua kom ntseeg tau tias txhua txoj hlua yog tsim los ntawm cov LED zoo ib yam ua thawj txoj hlua - tom qab ntawd kho R -ci rau 100/n, qhov twg n yog tus lej ntawm cov hlua, sib txuas ua ke. Tus nqi R yuav tsum yog 100 * R-ci. Yog tias koj muaj 9v system, Tom qab ntawd Pib nrog (V-2)*0.9 = 6.3; Uas txhais tau tias peb tuaj yeem muaj 2 Dawb lossis 3 Reds, Thiab yog tias peb muaj 4 txoj hlua ntawm qhov no, ces R-ci yuav yog 100/4, lossis 25-ohms. Koj tuaj yeem siv 22-ohms ntawm no, thiab R yuav tsum yog 22*100, lossis 2.2k. NCO TSEG: Koj tuaj yeem muaj txog 8 txoj hlua XWB nrog 2 lub transistors tau teev tseg. Thaum cov cuab yeej siv hluav taws xob zoo li TIP-series yuav ua haujlwm, lawv yuav tsis muaj qhov nce los tsav cov LEDs tag nrho. Yog tias koj xav siv 2N2222, 2N3906 lossis cov suab zoo sib xws, txwv cov hlua rau 4 lossis tsawg dua. Ib qhov kev nthuav dav zaum kawg yog theej tawm tag nrho theem, pib nrog R, R-ci thiab tsav tsheb Transistor nrog rau SAME LED kev teeb tsa. Txuas zoo ib yam li Ntu dhau los, TSIS TXHOB, tsis txhob txuas R-ci rau cov tswv yim ntawm op-amp. Nws tseem xav tau tab sis tsuas yog ua kom lub nra zoo ib yam rau thawj theem. Txoj kev no, koj tuaj yeem muaj txog 5 theem hauv tag nrho. Thiab, yog tias koj tseem tsis tau paub, txheeb xyuas Lub Cim Tom Ntej ntawm Tus Tsim Musicator! Thov pov npav yog tias koj xav pom ntau qhov zoo ib yam.

Finalist in the Art of Sound Contest

Finalist in the Pocket-Sized Contest