LED Matrix VU-Meter: 9 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:29

Kev tshoov siab rau txoj haujlwm no tau los ntawm cov khoom siv hluav taws xob loj hauv youtuber GreatScott, qhov uas nws tsim LED matrix nrog 100 LEDs. Kuv yeej xav rov tsim txoj haujlwm no yog li kuv tau mus thiab tsim cov lej nrog ob zaug ntawm LEDs.

Tsis tas li, Kuv nyiam qhov zoo ntawm cov nkauj tau tshwm nrog xim, uas yog lub cev xim lossis vu-meter. Yog li kuv paub tias kuv yuav ua qee qhov program matrix los ua ib qho ntawm cov teebmeem ntawd.

Txoj haujlwm yuav ua hauv cov kauj ruam no:

1. Sau tag nrho Cov Khoom Siv thiab Cov Cuab Yeej
2. Ua ntej npaj Backboard
3. Mounting cov LEDs
4. Ua lub xwmfab Ua Npuas Ncauj Square
5. Prepearing Acrylic Ciam teb thiab Pem hauv ntej-board
6. Ua Pawg Tswj Xyuas
7. Ua Aluminium Stands
8. Sib sau txhua yam ua ke
9. Xa cov duab kos thiab ntsuas

Kauj Ruam 1: Sau Cov Khoom Uas Xav Tau/Cov Cuab Yeej:

Txhawm rau tsim LED Matrix koj yuav xav tau cov ntaub ntawv hauv qab no:

• Adressable LED Sawb 4m
• Arduino NCO
• MSGEQ7 - 7 qhab Sound Equalizer
• 5V Fais fab mov (Computer PSU)
• Cov khoom siv hluav taws xob (Capacitors, Resistors, Prototype PCB, …)
• MDF backplate - 10 hli
• Diffused dawb acrylic plexi iav (3mm)
• Dub acrylic plexi iav (3mm)
• Ua npuas ncauj pawg thawj coj saib (3 hli)
• Yas square profile
• Aluminium T profile
• Cov tub ntxhais tooj liab tooj liab (22AWG) - UTP hlau
• Cov tub ntxhais tooj liab tooj liab (10AWG) - Cov xov hlau tseem ceeb
• Ntoo ntsia hlau me me
• Ntoo/Aluminium kua nplaum thiab super-kua nplaum

Koj tseem yuav xav tau cov cuab yeej hauv qab no:

• Soldering iav (Hlau, Leeg, …)
• Hlau txiav
• Yog saw
• Laum (thiab cov khoom me me)
• X-Acto riam
• Angle grinder/txiav
• Kub nplaum phom + kua nplaum
• 1m tus kav
• Txiab

Kauj Ruam 2: Npaj Cov Backboard:

Cia peb pib txoj haujlwm no los ntawm kev ua lub hauv paus tseem ceeb rov qab uas peb yuav lo rau LEDs tom qab. Txog cov khoom kuv siv 10mm MDF (Medium-density fiberboard) thiab qhov ntawd yog vim tias kuv tau pw nws ib puag ncig thiab nws zoo meej vim tias nws tsis yooj yim tab sis txiav tau yooj yim.

Ua ntej, kos lub duab plaub ntawm lub phaj nrog tus pas ntsuas thiab tus xaum xaum kom koj yuav muaj cov kab lus qhia ua raws thaum txiav. Cov duab plaub yuav tsum muaj qhov ntev tom ntej: 65, 5cm x 32, 5cm. Koj yuav tsum ua lub duab plaub kom zoo li xwm txheej kom cov ciam teb acrylic peb yuav tsim tom qab yuav haum.

Tom ntej no, txiav tawm cov duab nrog kev pab ntawm Jig-pom (lossis tes tuav). Txiav ncaj ncaj li sai tau.

Tom qab txiav, ntxuav cov npoo me ntsis nrog qee cov ntawv xuab zeb kom lawv yuav du thiab ncaj.

Tam sim no siv tus ruller los kos daim phiaj uas yuav pab peb tso cov LEDs hauv cov kauj ruam tom ntej. Kos thawj kab 16, 25mm nqes saum lub rooj tsavxwm, tom qab ntawd kos kab txhua 32, 5mm. Thawj kab ntawv yog 16, 38mm los ntawm sab laug ntawm pawg thawj coj, txhua kab ntawv tom ntej yog 32, 75mm los ntawm qhov kawg. Thaum ua tiav, koj yuav tsum muaj 10 kab thiab 20 kab sib npaug sib nrug …

Kauj Ruam 3: Mount LEDs:

Txog qhov haujlwm no koj yuav xav tau 4 metres ntawm tus kheej qhov ntxim nyiam LED uas hauv kuv cov ntaub ntawv tuaj hauv 4 yob ntawm 60 LEDs rau ib lub 'meter' thiab uas muab rau kuv 240 LEDs (200 xav tau).

Pib los ntawm kev txiav txhua LED ntawm lub ncoo qhov twg nws tau hais kom txiav. Koj tuaj yeem siv txiab lossis hlau txiav los txiav lawv.

Tom ntej no, siv qee qhov superglue hauv qab txhua lub LED thiab lo rau ntawm daim phiaj peb tau kos hauv cov kauj ruam dhau los (qhov twg cov kab sib tshuam). Them sai sai rau cov xub ntawm LED's - lawv yuav tsum tau taw qhia ib yam nkaus hauv kab ntawd. Hauv txhua kab tom ntej, kev taw qhia yuav tig mus kom peb yuav muaj ib txoj hauv kev txuas mus ntxiv.

Tam sim no los ntawm cov laug - ntau ntau ntawm cov khoom siv:

Peb yuav tsum txuas txhua lub LEDs ua ke kom raug. Tau txais koj cov khoom tseem ceeb tooj liab hlau (hauv kuv cov ntaub ntawv kuv siv UPT xov hlau) thiab pib siv tag nrho cov kab rov tav LEDs los ntawm kev txuas GND -> GND, DO (cov ntaub ntawv tawm) -> DI (cov ntaub ntawv hauv), 5V -> 5V. Thaum koj tuaj txog qhov kawg ntawm kab, tsuas yog txuas qhov kawg (DO) mus rau (DI) ntawm LED uas tau hais hauv kab tom ntej.

Tam sim no peb yuav laum qee qhov qhov tseeb hauv qhov chaw yog li peb yuav coj lub zog rau cov LEDs. Laum ib lub qhov rau LED hauv kab ntawd kom koj yuav muaj lub zog txav mus rau txhua kab. Peb yuav tsum muaj ntau lub ntsiab lus siv hluav taws xob vim tias yuav muaj lwm qhov loj heev ntawm qhov poob hluav taws xob ntawm LEDs kawg. Tam sim no muab cov tooj tooj liab tuab rau hauv txhua lub qhov thiab sib txuas rau cov tub ntxhais siv zog.

Tig lub rooj tsavxwm ib puag ncig thiab txuas txhua qhov hauv av thiab +5v cov xov hlau hla los ntawm lub qhov. Siv cov tooj liab tooj liab tuab. Kuj txuas ob txoj hlua hluav taws xob txuas rau cov kab hluav taws xob - cov ntawd yuav txuas nrog rau Pawg Tswj Xyuas.

Qhov kawg yog txhawm rau lub qhov ntawm thawj LED, muab xaim (qhov no nrog lub rwb thaiv tsev rau) los ntawm nws thiab muab nws tso rau DI (cov ntaub ntawv hauv) ntawm thawj LED.

Kauj Ruam 4: Ua Square Square Ua Npuas Ncauj:

Hauv cov kauj ruam no peb yuav ua daim phiaj ua npuas dej uas yuav ua tus barrirer rau lub teeb kom rov ua dua tshiab ntawm cov diffused acrylic ua lub pixel rau txhua LED.

Tau txais koj li 3mm foamboard thiab txiav tawm ob pawg ntawm cov kab sib txawv. Koj yuav xav tau 9 qhov ntev thiab 19 qhov luv.

Tom ntej no, koj yuav tsum tau txiav qee cov ntoo hauv cov kab ntawv uas xav tau tom qab siv los koom nrog cov kab ntev thiab luv ua ke. Cov ntoo yuav tsum yog 3 hli dav thiab 25 hli ntev. Ntawm txoj hlua ntev yuav tsum muaj 19 thiab ntawm qhov luv 9 qhov zawj. Saib Foam_Grid.pdf rau cov lus qhia ntxaws ntxiv.

Tam sim no koom nrog cov kab sib dhos ua ke, tso cov luv luv ntsug thiab ntev sawv ntsug.

Yog tias koj muaj lub ntsej muag dawb koj yuav tsum pleev xim rau tag nrho daim phiaj dub kom lub teeb yuav tsis dhau mus rau lub pixel tom ntej.

Kauj Ruam 5: Ua Ntej Acrylic Ciam Teb thiab Pem Hauv Ntej:

Lub teeb los ntawm LED yuav tsum tau nthuav tawm ntawm cov khoom ib nrab pob tshab txhawm rau kom tau txais ib lub xwm txheej saib pixel zoo. Rau qhov ntawd peb yuav siv 3mm dawb acrylic phaj uas peb yuav txiav rau tib qhov loj ib yam li peb lub rooj zaum tom qab: 65, 5cm x 32, 5cm. Qhov ntawd yuav yog peb pawg thawj coj.

Tam sim no peb yuav tsum ua tus ciam teb uas yuav tuav lub hauv ntej thiab lub rooj tsav tsheb rov qab ua ke. Qhov no yuav ua tiav ntawm 3 hli dub acrylic. Hauv kuv qhov xwm txheej, kuv tsis muaj acrylic nyob hauv tsev yog li kuv tau txais ciam teb los ntawm ib lub tuam txhab thiab lawv tau laser txiav lawv kom haum kuv qhov loj me. Yog tias koj tsis muaj lub tuam txhab/laser muaj koj yuav tsum tau txais cov acrylic thiab txiav tawm daim ntawm tes.

Koj yuav tsum muaj ob daim 66, 3cm thiab ob daim 32, 3cm ntev daim, ob qho tib si 3, 8cm dav.

Thaum kawg koj yuav tsum txiav qhov nqaim kom cov ciam teb yuav zoo ua ke. Ntawm qhov ntev ob ciam teb koj yuav tsum ua 10mm zawj hauv nruab nrab thiab ntawm qhov luv ob koj yuav tsum ua 10mm tab ntawm qhov chaw. Koj ua lub tab los ntawm kev txiav ob lub zawj ntawm ob sab uas koj tsim lub zawj ntawm ciam teb ntev. Ib zaug ntxiv, koj muaj Borders.pdf rau cov lus qhia ntxiv.

Tam sim no koj yuav tsum tau laum ob peb qhov rau ntswj cov ciam teb rau sab nraub qaum tom qab. Laum 3mm qhov 5mm los ntawm qhov kawg (yog li cov ntsia hlau yuav mus rau hauv nruab nrab ntawm lub nraub qaum). Laum 3 qhov ntawm ciam teb luv thiab 4 qhov ntawm qhov ntev. Chaw lawv tusyees.

Qhov kawg yog npaj cov yas square cov duab uas yuav sib dhos cov ciam teb nrog rau pem hauv ntej-pawg thawj coj saib thiab tseem muab cov lej zoo saib zoo nkauj bezel. Txiav ob daim 66, 5cm thiab ob daim 32, 5cm ntev. Tam sim no txiav lub kaum sab xis 45 ° ntawm txhua ntug kom lub bezels tom qab zoo zaum ua ke.

Kauj Ruam 6: Ua Tus Tswj Xyuas:

Lub microcontroller tseem ceeb rau tsav LEDs yuav yog Arduino NANO. Txij li thaum peb xav kom peb lub zeem muag los tso saib Vu-meter, peb yuav tsum tau txais qee lub suab kom nyob hauv tus tswj. Rau qhov ntawd peb yuav siv IC - MSGEQ7 - uas yog 7 band suab nraaj sib npaug.

Muaj ob peb txoj hauv kev sib txawv uas koj tuaj yeem ua rau pawg tswj hwm:

1. Ua lub Circuit Court ntawm Breadboard (Tsis tas yuav tsum tau siv tshuaj txhuam)
2. Ua qhov Circuit Court ntawm ib pawg thawj coj
3. Ua koj tus kheej PCB los ntawm kev kos nws
4. Txiav txim koj li PCB los ntawm cov chaw tsim khoom

Kuv tau ua kuv pawg thawj coj ntawm pawg thawj coj saib thiab kuv yuav suav nrog cov txheej txheem thiab cov ntawv hauv pawg thawj coj saib yog li koj tuaj yeem xaiv txoj kev twg uas koj xav tsim koj pawg thawj coj.

Nov yog Cov Lus Qhia Zoo yog tias koj xav cim koj tus kheej lub rooj tsavxwm: PCB Etching

Kauj Ruam 7: Ua Aluminium Stands:

Txhawm rau peb cov lej sawv ntawm nws tus kheej, peb yuav tsum ua qee yam kom nws xav txhawb nws thiab tsis poob. Nws yog qhov tsim qauv yooj yim tab sis nws ua tiav txoj haujlwm.

Tau txais koj tus kheej T profile txhuas thiab txiav ob qhov ntev ntawm 30cm.

Tam sim no ua V slot 10cm los ntawm ib kawg.

Khoov qhov profile 90 ° qhov V qhov yog thiab cov sawv tau ua tiav.

Kuv kuj tau ntxiv cov ntsia hlau thiab cov txiv ntoo rau kev nruj.

Kauj Ruam 8: Sib Sau Txhua Yam Ua Ke:

Tam sim no peb muaj txhua feem ntawm cov lej uas tau npaj ua ke

Pib los ntawm kev koom nrog cov ciam teb nrog rau pem hauv ntej-board. Peb yuav siv cov yas square profiles peb tau npaj ua ntej. Siv cov kua nplaum kub los lo rau 3 qhov sib xyaw ua ke (ciam teb - xwm txheej profile - pem hauv ntej -board).

Tam sim no ua ke txhua yam ua ke thiab siv lub pob zeb me me verry los xyaum qhov qhov. Tam sim no peb tuaj yeem ntswj txhua yam ua ke siv ntoo ntsia hlau.

Cia peb lo rau ntawm txhuas sawv ntsug siv qee qhov txhuas/ntoo kua nplaum. Muab lawv ob leeg 10cm los ntawm ntug.

Tam sim no peb tuaj yeem ntsia hlau ntawm lub rooj tswj hwm thiab xaim ob peb yam kawg. Cov xaim peb tau siv rau cov ntaub ntawv hauv thawj LED mus rau lub davhlau ya nyob twg ntawm lub rooj tsavxwm uas hais tias "OUT".

Tam sim no peb yuav tsum txuas txhua qhov chaw thiab +5v ua ke siv cov tooj liab tuab dua. Muab ob txoj hlua hluav taws xob tso rau hauv av thiab +5v thiab txuas lawv mus rau tus pin sib xws ntawm pawg tswj hwm. Kuv kuj tau ntxiv 470uF lub tshuab hluav taws xob kom ua rau qhov hluav taws xob me ntsis.

Qhov kawg yog txuas lub zog los ntawm lub hwj chim (hauv av thiab +5v dc).

Kauj Ruam 9: Upload Sketch thiab Test:

Tam sim no peb tau npaj rau kev sim

Rub cov kab kos uas kuv tau suav nrog thiab txuas lub xov tooj kab rau lub suab pins. Txuas lub hwj huam hluav taws xob thiab ua qee cov nkauj. Lub Vu-meter yuav tsum pib tso tawm.