Sib Luag Lub Pob Ntseg Amp rau Lub Hnov Tsis Zoo: 10 Cov Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24

Kuv xav tau

Qee lub hlis dhau los Kuv tau teeb tsa lub pob ntseg mloog kom ua rau poob kev nkag siab mus rau qhov ua tau zoo, ua rau lub suab nrov muffled thiab nyuaj rau qhov sib txawv ntawm cov sybillants (piv txwv li "S" thiab "F"). Tab sis cov kev pabcuam tsis muaj txiaj ntsig zoo thaum siv lub mloog pob ntseg vim tias lub microphones nyob tom qab pob ntseg. Tom qab sim nrog lub caj dab induction thiab tso ncaj qha rau kuv lub pob ntseg mloog (tsis yog ib qho uas tau muab cov txiaj ntsig txaus siab) Kuv tau los nrog lub tswv yim ntawm lub mloog pob ntseg lub mloog pob ntseg nrog qhov hloov pauv zaus tau tsim los kom haum rau ntawm kuv lub pob ntseg mloog.

Yog tias koj muaj lwm qhov kev xav tau rau kev sib luag ces txoj haujlwm no tuaj yeem hloov kho tau yooj yim. Nws muab kev txhawb zog (lossis txiav, nrog qhov hloov pauv tsis tseem ceeb) ntawm 3 qhov chaw nruab nrab. Txawm li cas los xij, nws tuaj yeem txuas ntxiv rau ntau zaus.

Qhov tshwm sim

Qhov kuv tau xaus nrog yog lub me me 6cm square lub thawv nrog 3.5mm nkaus thiab Bluetooth cov tswv yim thiab 3.5mm nkaus lub mloog pob ntseg tso tawm. Kuv pom qhov kev txhim kho hauv kev mloog rau cov nkauj kom zoo nkauj, thiab txhim kho zoo rau kev hais lus.

Qhov ntawv qhia no yuav muab rau koj li cas

Cia kuv hais qhia thaum pib, qhov no tsis yog pib ua haujlwm. Koj yuav xav tau qib tsim nyog ntawm kev txawj ntse, thiab yog tias koj xav hloov kho nws (raws li koj yuav zoo) koj yuav tsum kawm Eagle rau lub rooj teeb tsa thiab TinkerCAD rau lub thawv 3D-luam tawm. Ob leeg coj kuv me ntsis los ua tus tswv tab sis tsis nyuaj. Kuv cia siab tias tib neeg yuav kawm qee yam los ntawm Kuv Cov Lus Qhia (tshwj tsis yog koj twb paub ntau dua li kuv ua), tsis txhob ua qhov muag tsis pom raws li cov lus qhia.

Yog tias koj tsis tau siv cov khoom sib xyaw saum npoo av, tsis txhob tso tawm - nws tsis nyuaj li koj xav. Saib phau ntawv qhia no rau kev taw qhia.

Yam koj yuav tau txais los ntawm qhov haujlwm no yog:

• Dav dawb hau tsim cov ntaub ntawv (txheej txheem thiab txheej txheem txheej txheem)
• Ib daim ntawv Excel nthuav tawm cov qauv sib npaug los tso cai rau koj kho qhov sib npaug rau koj cov kev xav tau
• TinkerCAD tsim rau lub thawv 3D luam tawm.

Txij li qhov kev txiav txim yam tsawg kawg nkaus rau kev cai luam tawm lub rooj tsav xwm hauv tsev yog 5 daim, Kuv muaj 3 daim txiag ntoo liab qab mus seem (ib muag). Tam sim no cov no yog muag ntawm eBay - saib

Kauj Ruam 1: Tus Txheej Txheem Tsim: Yuav Tsum Tau Ua thiab Lub Tswv Yim

Thaum kuv pib xav txog txoj haujlwm no, ib qho ntawm thawj cov lus nug hauv kuv lub siab yog seb puas yuav siv cov analogue lossis cov lim dej digital. Hauv cov xov ntawm All About Circuits rooj sab laj, Keith Walker ceeb toom rau kuv rau qhov pheej yig heev (sib piv) duab sib luag los ntawm Sab Hnub Tuaj (qhia saum toj no) uas nws tau siv los daws qhov teeb meem qub. Yog li kuv xaj ib qho los ua pov thawj ntawm lub tswv yim.

Nws ua haujlwm tau zoo tab sis hnyav heev rau kev siv nqa tau, thiab xav tau ob qho tib si zoo thiab tsis zoo ntawm txoj kab hluav taws xob, ntxiv qhov tsis yooj yim. Tab sis nws tau lees paub txoj hauv kev, thiab hom lim lim siv los siv.

Kuv tau kho kuv cov kev xav tau rau cov hauv qab no:

• Nws yuav tsum muaj kev cog lus me me, nqa tau thiab siv tau los ntawm lub roj teeb uas rov them tau.
• Nws yuav tsum lees txais cov tswv yim los ntawm 3.5mm nkaus lossis Bluetooth.
• Nws yuav tsum muaj cais txoj cai tso suab sab laug thiab sab xis.

Kuv tau siv cov khoom sib dhos dhau los thiab qhov 0.3 DIL ICs ntawm kab txaij hauv ntau txoj haujlwm yav dhau los, tab sis qhov no yuav ua rau nws hnyav dhau. mount cov khoom (uas kuv muaj qee qhov kev paub dhau los). Kuv kuj tseem yuav tsum tsim lub thawv 3D luam tawm (kuv qhov kev tsim qauv 3D tau txwv heev).

Lub peev xwm Bluetooth yuav yooj yim ntxiv nrog siv ib qho ntawm ntau yam pheej yig Bluetooth modules uas muaj.

Muaj 2 lossis 3 mob siab rau sib npaug sib npaug ICs uas kuv tau saib, tab sis siv pheej yig quad opamps zoo li thaum kawg yooj yim dua thiab xav tau tsuas yog ntau yam sab nrauv.

Kauj Ruam 2: Tsim Kom Zoo

Lub hauv paus tseem ceeb ntawm cov khoom siv uas kuv siv yog hu ua gyrator. Nws siv lub tshuab ua haujlwm ua haujlwm kom tig lub capcitor rau hauv lub tshuab hluav taws xob virtual. Qhov no, thiab ib qho ntxiv lub tshuab hluav taws xob ua rau muaj qhov hloov pauv, muab txiav los yog txhawb nqa ntau qhov ntau ntawm cov zaus. Muaj ntau daim duab sib npaug sib luag tsim siv qhov tsim qauv zoo ib yam thiab tsis muaj ib qho ntsiab lus hauv kev ncaim ntawm nws. Lawv tau ua piv txwv los ntawm qhov no los ntawm Electronics Niaj Hnub no Thoob Ntiaj Teb Lub Cuaj Hli 1977 nplooj 27. Kab lus no piav qhia meej heev tias Circuit Court ua haujlwm li cas.

Kuv tsuas yog hloov kho nws los ntawm kev siv quad opamps uas yuav khiav los ntawm ib qho 5V cov khoom siv, thiab los ntawm kev ntxiv lub mloog pob ntseg amplifier IC kom ntseeg tau tias nws yuav tsim nyog tsav lub mloog pob ntseg. Kuv kuj tau hloov pauv txhua lub hwj chim los ntawm lub hwj chim thiab lub zog tiv thaiv kom muab kev txhawb nqa tsuas thiab ua kom zoo dua qub, txij li kuv tsis xav tau txiav.

Cov txheej txheem thiab txheej txheem txheej txheem (ob qho tib si tsim los siv Eagle) tau qhia saum toj no.

Ib qho zoo ntawm Eagle yog tias nws suav nrog Spice Circuit simulation pob, ua rau nws muaj peev xwm txheeb xyuas qhov tsim thiab kwv yees cov lus teb ua ntej cog lus rau kev tsim khoom ntawm PCB.

Lub Rooj Tswjhwm Saib muab 2 lub tswv yim, 3.5mm lub qhov (socket) txuas thiab cov ntaub qhwv rau kev txuas ntawm Bluetooth tus qauv txais. Cov no muaj txiaj ntsig zoo tib yam. Lub hwj chim tuaj yeem muab tau los ntawm lub qhov (socket) mini-USB lossis cov ntaub qhwv. Kuv siv mini ntau dua li micro-USB txij li lub micro-USB lub qhov rooj yuav nyuaj heev rau tes-laug, thiab tseem tsis muaj zog.

Kauj Ruam 3: Eagle Install and Set-up

Yog tias koj xav xa lub rooj tsav xwm tsim rau kev tsim khoom, hloov kho cov qauv lossis tsuas yog hloov kho kab lus teb koj yuav xav tau nruab Eagle. Yog tias (zoo li kuv thaum kuv pib txoj haujlwm no) koj tsis paub nws, SparkFun lub vev xaib muaj cov lus qhia pab tau ntawm

Thawj qhov los saib yog Yuav ua li cas rau nruab thiab teeb Eagle.

Qhov no suav nrog txhim kho SparkFun cov tsev qiv ntawv. Cov ntaub ntawv rub tawm zip muaj cov nplaub tshev SparkFun-Eagle-Libraries-master uas koj yuav tsum luam rau EAGLE cov tsev qiv ntawv

Koj kuj yuav tsum tau ntshuam kuv li Eagle schematic thiab pawg thawj coj saib cov ntaub ntawv, thiab kuv cov txuj lom qauv. (Spice yog software simulation Circuit uas ua rau peb sim ua qhov kev teb zaus ntawm lub suab nrov.)

Tag nrho cov no suav nrog hauv zip file uas koj tuaj yeem rub tawm los ntawm

github.com/p-leriche/EqualisedHeadphoneAmp

Qhib cov ntawv zip thiab rub thiab tso cov phiaj xwm thiab cov txuj lom rau hauv koj daim EAGLE nplaub tshev. (Nws yuav twb muaj cov phiaj xwm npliag npliag.)

Tam sim no koj yuav tsum npaj kom pib Eagle.

Nyob rau sab laug sab tes, qhib Cov Haujlwm, tom qab ntawv ua haujlwm, tom qab ntawd sib npaug Headphone Amp.

Ob npaug nias rau Headphone_Amp.brd thiab Headphone_Amp.sch cov ntaub ntawv. Cov no yuav qhib nyob rau hauv cais lub qhov rais, thawj qhov qhia txog kev teeb tsa pawg thawj coj saib thiab qhov thib ob yog cov txheej txheem.

Ntawm qhov schematic, nrhiav thiab nyem khawm Simulate.

Qhov no qhib qhov Simulation teeb tsa. Nyem rau AC Sweep xov tooj cua khawm, teeb Hom rau Dec (lub neej ntawd), thiab Pib thiab Xaus Freq rau 100 thiab 10000 feem. Nyem rau Simulate khawm nyob hauv qab txoj cai. Tom qab ncua sijhawm teeb duab ntawm cov lus teb zaus yuav tsum tshwm, ib yam li tau qhia hauv qib tom ntej.

Kauj Ruam 4: Txhim Kho Kab Lus Teb

Koj lub pob ntseg yuav zoo li txawv rau kuv, yog li ua ntej tshaj plaws koj xav tau daim ntawv theej ntawm koj lub suab. Koj tus kws kho mob yuav tsum tuaj yeem muab qhov no rau koj, tab sis yog tias koj muaj khub zoo ntawm lub mloog pob ntseg koj tuaj yeem ua koj tus kheej los ntawm kev mus rau

Qhov no yuav tsum qhia koj lub tswv yim zoo ntawm kev txhawb nqa ntau npaum li cas koj xav tau ntawm ntau zaus. Hauv kuv qhov xwm txheej, kuv hnov tsis hnov lus nce nrawm dua 3kHz, ua rau nws ua tsis tau los them nyiaj ntau dua qhov ntawd. Txawm li cas los xij, qee qhov kev sim tshuaj ntsuam xyuas qhov ntau ntawm cov peev txheej nrog Audacity tau qhia tias tej zaum tsis muaj ntau dua qhov ntawd rau kuv kom ploj mus.

Raws li nws sawv, txoj haujlwm tso cai rau koj hloov kho cov lus teb ntawm 3 qhov chaw nruab nrab ntawm 1.5, 2.3 thiab 3.3kHz, ywj siab ntawm sab laug thiab sab xis. Koj tuaj yeem lo nrog cov zaus no, lossis hloov lawv (saib cov kauj ruam tom ntej).

Hauv koj daim EAGLE / txuj lom nplaub tshev koj yuav pom cov qauv rau 3 trimpots POT_VR111.mdl, POT_VR121.mdl thiab POT_VR131.mdl. Cov no tswj cov lus teb ntawm 3 zaus. Qhib ib qho ntawm cov no nrog cov ntawv sau (piv txwv li Notepad) yuav pom kab xws li:

.param VAR = 50

Hloov tus lej mus rau ib yam dab tsi ntawm 0 thiab 100 los sawv cev rau txoj haujlwm ntawm qhov sib thooj sib luag thiab yog li qhov kev txhawb nqa ntawm qhov tsis sib xws rau ib yam dab tsi los ntawm xoom mus rau siab kawg.

Tam sim no rov ua qhov simulation (nyem Hloov Kho Netlist ua ntej nyem Simulate) saib seb qhov kev teb tsis raug tam sim no zoo li cas.

Kauj Ruam 5: Hloov Chaw Zaus Zis

Hauv Eagle Project nplaub tshev, Kuv tau suav nrog Excel spreadsheet Calc.xlsx. Qhib qhov no nrog Excel (lossis yog tias koj tsis muaj Excel, LibreOffice Calc, uas yog pub dawb). Daim ntawv nthuav qhia no suav nrog kev suav suav tsim rau ib qho ntawm 3 ntu ntu lim.

Thawj lub thawv tso cai rau koj los ntsuas qhov nruab nrab zaus thiab Q yam rau muab qhov tseem ceeb ntawm R1, R2, C1 thiab C2. (Q lossis Qeb Zoo txiav txim siab qhov dav ntawm pab pawg. Tus nqi siab dua muab cov pab pawg nqaim thiab txhawb nqa ntau dua. Tus nqi nyob ib puag ncig 4 zoo li ua haujlwm tau zoo yog tias txhua zaus yog kwv yees li 50% ntau dua li yav dhau los.)

Qhov tseeb koj muaj feem ntau yuav xav xaiv cov zaus thiab xam cov khoom muaj txiaj ntsig. Muab qhov xav tau zaus thiab peb ntawm plaub qhov tseem ceeb, lub npov thib ob tso cai rau koj xam tus lej thib 4 tus nqi.

Cheebtsam tuaj hauv tus lej nyiam (piv txwv li E12 series), yog li koj tuaj yeem xaiv tus nqi ze tshaj rau qhov suav tus lej thiab pub rov qab rau hauv thawj lub npov kom pom qhov tseeb zaus uas muab.

Tom qab ntawd koj yuav tsum ntsaws koj qhov txiaj ntsig rau hauv Eagle schematic thiab rov ua qhov simulation.

Nqa cov txheej txheem, thiab nyob rau sab laug ntawm lub vaj huam sib luag, nyem rau lub cim tus nqi tivthaiv ces nyem ntu uas koj xav hloov. (Kev sim sim tau teeb tsa los ua haujlwm tsuas yog nyob rau sab qis lossis sab laug.) Koj yuav tau txais lus ceeb toom hais tias cov khoom siv tsis muaj tus neeg siv tus nqi txhais tau. Koj puas xav hloov nws? Tau kawg koj ua! Ntaus tus nqi tshiab hauv lub npov uas tshwm tuaj.

Nyem rau Simulate khawm, nyem Hloov Kho Netlist tom qab ntawd Simulate.

Kauj Ruam 6: Cov Cheeb Tsam Yuav Tsum Tau

Koj yuav, tau kawg, xav tau lub rooj tsav xwm hauv Circuit. Tshwj tsis yog tias koj siv ib qho ntawm kuv cov laug cam liab qab koj yuav xav tau xa Eagle cov ntaub ntawv rau kev tsim khoom. Cov tuam txhab tsim khoom feem ntau xav tau kev tsim qauv ua cov ntaub ntawv gerber. Ntau dua li theej tawm cov lus qhia ntawm no, tshawb hauv online rau Eagle export gerber lossis xa mus rau Sparkfun qhia.

Sib cais cov ntaub ntawv gerber piav qhia txheej txheej tooj liab, daim npog qhov ncauj, luam ntawv lo lo lo ntxhuav luam ntawv, qhov drilling thiab milling ntawm cov phiaj xwm phiaj xwm.

Hauv kev xa cov ntaub ntawv online mus rau cov chaw tsim khoom nws yuav lees paub lawv thiab ceeb toom koj yog tias cov ntaub ntawv tseem ceeb ploj lawm. Tab sis nws yuav tsis ceeb toom koj yog tias cov ntaub ntawv lo lo ntxhuav ploj lawm, uas yog kuv qhov yuam kev. Qhov no yog cais los ntawm tus txheej txheem ntaus ntawv.

Koj yuav xav tau cov khoom siv hauv qab no txhawm rau ua kom lub rooj tsavxwm.

• TL084 SOIC -14 quad op amp - 2 tawm
• LM4880M SOIC 250mW lub zog siv hluav taws xob - 1 tawm
• 0603 SMD resistor ntau yam
• 0603 SMD ceramic capacitor assortment 100pF - 1μF
• 5K Trim Pot 3362P -502 - 6 tawm
• 10uF 16V SMD 0805 Multilayer Ceramic multilayer capacitor - 4 tawm
• 2917 (EIA7343) 100μF 16V tantalum capacitor - 2 tawm
• 2917 (EIA7343) 470μF 10V tantalum capacitor - 2 tawm
• Mini USB Poj Niam 5-Pin SMD Qhov (Socket)
• 3.5mm dhau -qhov PCB mount lub tso suab tso suab - 2 tawm
• 3mm xiav LED (lossis koj xaiv xim)

Txhawm rau ua kom lub roj teeb ua tiav chav nrog Bluetooth nkag koj yuav xav tau ntxiv:

• Bluetooth txais tus qauv txhawb nqa A2DP xws li qhov no
• LiPo roj teeb: 503035 3.7V 500mAhr
• TP4056 LiPo them nrog lub mini-USB input (lossis microUSB yog tias koj xav tau) xws li qhov no
• 3V - 5V txhawb kev hloov pauv xws li qhov no
• Mini SPDT swb hloov

NB Lub roj teeb LiPo zoo li yuav teeb rau 1A them tam sim no, uas ntau dhau rau 500mAhr roj teeb. Nws yog ib qho tseem ceeb uas koj tshem tawm tus nqi them tus nqi tiv thaiv lub cev (ib txwm 1.2K txuas nrog tus pin 2 ntawm TP4056 nti) thiab hloov nws nrog ib qho ntawm 3.3k.

Kuv siv lub roj teeb LiPo-xaim kawg, tab sis ib qho nrog lub JST txuas me me yuav tso cai rau nws txuas nrog tsuas yog tom qab txuas thiab rov xyuas ob zaug txhua yam ntxiv, ntxiv rau ua kom yooj yim dua.

Bluetooth module uas yuav ua haujlwm ntawm 3.3V lossis 5V yog qhov zoo dua li nws tuaj yeem siv nws cov khoom ncaj qha los ntawm roj teeb, txo cov suab nrov ntawm 5V muab rau lub rooj tsav xwm tseem ceeb.

Yog tias koj xaiv Bluetooth tus qauv txhawb nqa AVRCP ntxiv rau A2DP koj tuaj yeem ntxiv cov khawm thawb rau ntim nce/nqis thiab tom ntej/yav dhau los.

Ntau tus qauv Bluetooth muaj lub ntsej muag sab saud LED los qhia txog lub xeev kev sib txuas, thiab TP4056 lub charger muaj xim liab thiab ntsuab nto teeb LEDs los qhia lub xeev them. Ib lub thawv xws li qhov kuv tau ua yuav zaum nkaum cov no, yog li lawv tuaj yeem hloov pauv (saib tom qab) los ntawm:

• 3 hli xiav LED
• 3 hli liab/ntsuab ntau anode LED.

Kauj Ruam 7: Siv Pawg Thawj Coj Tsis Pub Dawb

Yog tias koj tau txais ib qho ntawm kuv daim ntawv pov thawj seem tsis muaj tsuas yog qee qhov yuam kev me me koj yuav tsum paub txog.

• Yog tsis muaj lo lo ntxhuav npo saum lub rooj tsavxwm. Koj yuav pom tias nws muaj txiaj ntsig kom muaj daim ntawv theej ntawm pawg thawj coj saib rau ntawm tes thaum koj ua nws.
• Ob peb qhov vias tau xav kom txuas rau saum lub dav hlau hauv av uas tsis ua. Qhov no tsis muaj qhov tsim nyog.
• C3 yog thawj 100uF, hauv 2917 pob. Tus nqi no tau loj heev thiab tam sim no yog 1uF 0603. Koj yuav tsum tau khawb me ntsis ntawm cov tshuaj tiv thaiv los ntawm lub dav hlau hauv av txhawm rau kom haum qhov no, raws li qhia hauv daim duab.

Qhov nce tau teeb tsa los ntawm qhov tseem ceeb ntawm resistors R106 thiab R206. 22k muab kwv yees kwv yees kev nce qib. Txij li koj yuav xav sim nrog cov txiaj ntsig sib txawv, kuv tau muab ob qho 0603 SMD resistor pawm, thiab qhov ntawm 0.3 suab rau xaim-qhov kawg tiv thaiv.

Kauj Ruam 8: Boxing It

Koj tuaj yeem pom 3D-luam ntawv tsim rau lub thawv kuv siv ntawm tinkercad.com. Kev tshem tawm tau nruj me ntsis yog li kuv tau nce qhov ntev thiab dav ntawm lub thawv los ntawm 1mm.

Hauv qab ntawm lub npov muab faib rau lub roj teeb, lub charger, 5V txhawb kev hloov pauv thiab Bluetooth module. Lub mloog pob ntseg amp board haum rau saum. Lub hau tau khaws los ntawm ob M2x5mm tus kheej tapping screws.

Cov roj teeb zoo ib yam thiab 5V txhawb cov qauv muaj dav tab sis muaj ntau qhov sib txawv ntawm Bluetooth. Yog tias ib qho ntawm qhov no txawv ntawm kuv li koj yuav tsum tau hloov kho lub thawv tsim.

Thaum nyob hauv qhov chaw, koj tuaj yeem khaws cov qauv nrog kub yaj kua nplaum.

Kauj Ruam 9: Txuas Nws

Txog kev ntsuas lub hom phiaj kuv txuas txhua tus qauv rau ib daim duab los qhia siv blu-tac. Los ntawm qhov no kuv pom tias txoj kev sib txuas hauv av yog qhov tseem ceeb. Hauv av los ntawm Bluetooth module yuav tsum raug coj mus rau lub mloog pob ntseg amp nrog rau txoj cai thiab txoj cai, tab sis tom qab ntawd hauv av txuas los ntawm pawg tswj hwm kev faib khoom yuav tsum mus rau Bluetooth module, tsis yog lub mloog pob ntseg amp, txwv tsis pub koj tau txais ntau lub suab nrov los ntawm Bluetooth module hauv qhov tso tawm.

Kuv tau teeb tsa qhib/tawm ntawm ib daim me me ntawm kab txaij, 6 kab dav dav los ntawm 5 ntev thiab nrog 2x4 txiav rau qhov hloov pauv. Qhov no kuj ua haujlwm ua pawg tswj hwm hluav taws xob. Thaum nws tau txuas nrog kuv tau txuas qhov hloov mus rau hauv qhov chaw (nrog daim kab xev txuas nrog) siv cov kua nplaum epoxy. Yog tias kuv tau rov ua txoj haujlwm no kuv yuav muab kev hloov pauv ntawm lub mloog pob ntseg amp board.

Koj xav tau cov kab xaim me me rau xaim nws kom kuv faib qhov ntev ntawm zaj sawv zaj sawv, uas tau muab rau kuv ib leeg ntawm cov xim sib txawv. Feem ntau koj yuav hla cov xov hlau los ntawm lub qhov nyob rau hauv lub rooj tsavxwm thiab muab nws tso rau ntawm lwm sab, tab sis nrog ntau yam kev hloov pauv nyob rau hauv qhov chaw hauv lub hauv paus ntawm lub thawv kuv yuav tsum tau muab txuas rau tib sab ntawm lub rooj tsavxwm raws li cov xov hlau nkag los ntawm, nrog tsuas yog lub rwb thaiv tsev me me ntau dua li lwm qhov yuav xav tau. Kuv yuav tsum tau muab cov hlua tooj liab txuas rau sab thiab muab cov hlua txuas rau nws zoo ib yam.

Kuv xav kom cov LEDs ntawm lub charger thiab Bluetooth modules kom pom, yog li kuv tshem tawm ntawm lub rooj tsavxwm SMD LEDs thiab txuas cov ntaub qhwv rau 3mm LEDs. Kuv drilled qhov hauv lub thawv rau cov no txij li thaum kuv tsis tau tso cai rau lawv hauv kuv lub thawv 3D luam tawm. Kuv txuas lawv mus rau cov pawm laug ntawm cov txheej txheem nrog cov xaim xaim hluav taws xob xaim. Qhov no yog txheej nyob rau hauv tus kheej fluxing polyurethane uas yaj nyob rau hauv tshav kub ntawm ib tug soldering hlau.

Txog tus qauv them nyiaj, kuv siv liab/ntsuab ib qho anode LED. Cov anode nquag yuav tsum tau txuas rau ib qho ntawm SMD LED cov ntaub ntawv ze tshaj rau ntawm ntug ntawm lub rooj tsavxwm (uas koj tuaj yeem lees paub nrog lub multimeter). Yog tias koj lub Bluetooth module muaj SMD LED koj yuav tsum txiav txim siab qhov sib txawv nrog lub multimeter. Qee qhov qauv muaj kev sib txuas rau sab nrauv LED.

Ua ntej tso lub mloog pob ntseg amp rau hauv lub npov hla lwm cov qauv, Kuv pom tias nws tsim nyog yuav tsum muab cov ntawv me me ntawm daim kab xev PVC tso rau saum ob lub tshuab hluav taws xob hluav taws xob ntawm lub Bluetooth module thiab ntawm lub qhov hluav taws xob mini-USB thiaj li tiv thaiv kom luv nrog hauv qab ntawm lub mloog pob ntseg amp.

Kauj ruam 10: Txhim kho

Yog tias kuv xav hloov qhov no mus rau hauv cov khoom muaj qhov tsis ntseeg yam kuv yuav hloov, tab sis tau ua kuv tus kheej lub cuab yeej uas ua haujlwm rau kuv lub hom phiaj, kuv yuav txav mus rau lwm qhov haujlwm.

Lub voj voog:

• Lub zog fais fab bipolar yuav zoo dua. Txij li tam sim no kos los ntawm opamps me me, lub twj tso kua mis muaj peev xwm hluav taws xob inverter xws li MAX660 yuav yooj yim muab cov khoom tsis zoo.
• Nrog cov khoom siv bipolar, 5V txhawb kev hloov pauv yuav tsis xav tau los ntawm op amps. LM4880 lub mloog pob ntseg lub mloog pob ntseg yuav ua haujlwm ntawm cov khoom siv hluav taws xob los ntawm lub roj teeb LiPo txawm hais tias lub zog tso zis ntau tshaj yuav raug txo los ntawm 250mW rau ib channel mus rau ib ncig 100mW ntawm ib channel.

Pawg thawj coj:

• Lub rooj tsav xwm loj tsuas yog qhov nws tawm los ntawm txheej txheem txheej txheem, tab sis ua rau nws nqes mus rau qhov loj me me xws li 6x6cm yuav tau tsim lub thawv yooj yim dua.
• Ib yam nkaus, nws yuav tsum tau zoo dua los tso cov tswv yim thiab tso tawm 3.5mm jacks hauv kab thiab raws nraim hauv nruab nrab ntawm ob sab. Qhov no tseem yuav pab txhawb lub thawv tsim.
• Nws yuav tau yooj yim rau ntawm lub nkoj LiPo them hluav taws xob. 3 - 5V txhawb kev hloov pauv yuav tsis xav tau nrog cov khoom siv bipolar, yog li txuag 2 cais cov qauv.
• Nrog lub TP4056 lub charger yooj yim raws li siv, lub roj teeb tuaj yeem raug them ntau yog tias koj sim them nws nrog chav hloov. Me ntsis ntau dua cov roj teeb suav nrog kev tiv thaiv yooj yim Circuit Court, uas yuav tsim nyog suav nrog.
• Nrog cov kev hloov kho saum toj no, qhov hloov pauv tuaj yeem teeb tsa ntawm lub rooj tsavxwm. Txoj hauv kev teeb tsa qhov hloov pauv hauv lub thawv 3D luam ntawv tsis zoo tagnrho.
• Ib tug 2 ncej 3 txoj kev hloov pauv yuav tso cai rau Bluetooth module siv tau tsuas yog thaum xav tau.

Lub thawv:

• Kev txhim kho cov qauv hauv 2 txheej ua kom sib dhos nyuaj dua li qhov nws xav tau, thiab lub thawv me dua tab sis lub thawv loj dua yuav muaj lub hnab ntim zoo dua.
• Hloov tau yooj yim tig rau yam tsis tau. Nws yuav tau yooj yim los suav nrog cov neeg tiv thaiv ib puag ncig nws hauv 3D luam ntawv tsim los tiv thaiv qhov no.

Lwm daim ntawv thov:

Yog tias, tej zaum zoo li lub suab kaw suab, koj tsuas xav tau lub mloog pob ntseg sib npaug amp muab ob qho txhawb nqa thiab txiav ntawm ntau qhov ntau zaus uas koj tuaj yeem siv qhov tsim tau zoo ib yam.

Txhawm rau muab ob qho ntxiv thiab txiav, tshem tawm R113, R123, R133 thiab R213, R223, R233 (lossis hloov los ntawm 0Ω tus neeg rov ua dua tshiab) thiab hloov lub trimpots los ntawm 10k (cov lauj kaub tais diav yog tias koj xav tau).

Koj tuaj yeem ntxiv ntau qhov xwm txheej ntawm lub voj voog hluav taws xob raws li koj xav tau.