Kuv Thawj Tsov Tus Tsov Tsov: Analog-rau-Digital Converter: 5 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:27

Nyob zoo, kuv cov phooj ywg Makers!

Kev qhia niaj hnub no yog hais txog qee yam tshwj xeeb. Cov cuab yeej no yog KUV FEATHERWING - ua raws Adafruit daim ntawv foos. Nws tseem yog kuv qhov chaw SAWV DAWS MOUNTED PCB! Kuv qhov tseem ceeb tshaj plaws ntawm kev siv daim ntaub thaiv no yog hauv cov cuab yeej uas kuv ua hu ua EMF Meter. Nws pab cov tub ntxhais kawm ua qhov kev sim tes nrog txav cov hlau nplaum thiab ntxias EMFs.

Txhawm rau kawm paub ntau ntxiv txog kev tsim lub EMF Meter, thov saib cov lus qhia no:

DISCLAIMER: Qhov kev qhia tam sim no tsuas yog txiav txim siab SHIELD, ITSELF.

Kauj Ruam 1: ADS1115: Lub Plawv Ntawm Cov Shield. ADS1115 yog dab tsi?

ADS1115 yog Analog-to-Digital Converter (ADC), lub ntsiab lus tias nws nyeem cov lej zauv zauv (piv txwv li 2.489 V) thiab hloov qhov ntsuas mus rau hauv cov khoom -0s thiab 1s. Txog rau ADS1115, nws hloov qhov hluav taws xob mus rau 16 ntsis nyeem.

Cov nti no ua haujlwm ob txoj haujlwm:

1) los nyeem qhov inputted voltage.

2) txhawm rau ua kom lub zog nkag tau zoo (tuaj yeem ua kom nrov nrov los ntawm 1, 2, 4, 6, lossis 2/3 ua ntej xa cov cim digital).

Kauj Ruam 2: Dab tsi yog Featherwing?

Cov ntaub thaiv npog no suav nrog ADS1115 Circuit Court rau hauv daim ntawv ua plaub, raws li pom hauv daim duab saum toj no.

Cov plaub thiab plaub yog cov tsev neeg ntawm cov laug cam uas muaj lub ntsej muag zoo ib yam tab sis tuaj yeem ua haujlwm ntau yam, xws li kev sib txuas lus los ntawm bluetooth, xa cov ntaub ntawv mus rau wifi, lossis tswj lub cav. Qhov no ua rau lawv yooj yim rau cov tuaj tshiab rau cov khoom siv hluav taws xob los txuas plaub ua ke thiab tsim cov phiaj xwm nyuaj nrog qhov nyuaj me ntsis. Los ntawm kev ua ADS1115 plaub, kuv tab tom ntxiv nws rau tsev neeg ntawm cov khoom sib pauv.

Plaub thiab Plaub Plaub tau tsim thiab nrov los ntawm Limor Fried, CEO ntawm Adafruit Industries. Txhawm rau kawm paub ntau ntxiv txog Adafruit plaub thiab plaub plaub, saib ntawm no:

Kauj Ruam 3: Yuav Ua Li Cas Txuas Cov Shield mus rau Qhov Hluav Taws Xob

Cov ntaub thaiv npog plaub tuaj yeem ntsuas ob qhov hluav taws xob ib txhij, txhua qhov hluav taws xob tau txuas nrog rau ib qho ntawm kab ntawv (sau npe Channel 1 thiab 2), raws li pom hauv daim duab A.

Txhawm rau txuas ib qhov hluav taws xob rau ib qho ntawm cov channel no, siv ob lub xov hlau uas txuas rau + thiab - cov dav hlau ntawm koj qhov hluav taws xob thiab txuas txhua tus rau hauv tus poj niam lub taub hau ntawm cov channel, raws li pom hauv daim duab B. Nco ntsoov tias cov dav hlau tau muab cais cais rau hauv Channel 1/2 A thiab Channel 1/2 B ib yam nkaus. Thaum qhov kev sib txuas no tau ua tiav, koj tuaj yeem txuas daim ntaub thaiv no rau ib qho plaub ntawm qhov koj xaiv los pab hauv koj qhov kev sim.

Kauj Ruam 4: Yog li Koj Xav Ua Qhov Tsiaj Qub No Tshooj 1: Cov peev txheej

Yog tias koj xav ua ib qho ntawm cov chips no, koj tus kheej, koj muaj hmoo, vim tias txhua yam khoom siv rau daim ntaub thaiv no muaj nyob ntawm cov hauv qab no:

Lub Rooj Tswjhwm Saib

GitHub: Ntawm no, koj tuaj yeem nkag mus rau EAGLE.brd cov ntaub ntawv, uas koj tuaj yeem hloov kho tus kheej kom haum rau koj txoj haujlwm. Txij li thaum PCB xav tau kev teeb tsa saum npoo, cov ntaub ntawv tsuas yog muaj cov ntaub qhwv hauv qhov tsim.

Oshpark thiab Pom Studio: Oshpark tshaj tawm pej xeem muaj kuv tus qauv rau ADS1115 featherwing thiab tuaj yeem xa cov ntawv luam rau koj. Yog tias koj xav xaj lawv ntau, Kuv xav kom pom zoo Seeed Studio.

Cov khoom siv hluav taws xob

Txhawm rau xaj cov khoom siv hluav taws xob, Kuv siv digikey, uas muaj ntau yam sib txawv ntawm cov chips xaiv los ntawm. Cov version kuv siv tau teev tseg ntawm no:

Ferrite Bead Inductors:

1uF Capacitors:

ADS1115 IC Chip:

10 K Resistor Array:

Kauj Ruam 5: Yog li Koj Xav Ua Qhov Tsiaj Qub Ntu 2: Soldering

Yog tias koj tab tom ua daim thaiv npog los ntawm kos, koj yuav tsum tau kawm paub yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau.

Kuv kawm paub yuav ua li cas txhawm rau txhawm rau ntawm qhov chaw hu ua Next Fab. Lawv muab ntau yam kev qhia thiab qhia ib leeg rau ib tus.

Yog tias koj muaj cov cuab yeej txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau hauv tsev, tom qab ntawd xav tias yuav ua kom zoo dua hauv qhov kev nplij siab ntawm koj tus kheej lub chaw tsim khoom. Txwv tsis pub, nrog ua tswv cuab, koj tseem tuaj yeem ua koj cov laug hauv Next Fab Lab. Tam sim no, qhov ntawd yog qhov uas tag nrho kuv cov khoom siv soldering.