Cov txheej txheem:

DIY Oscilloscope Kit - Sib dhos thiab Qhia Teeb Meem: 10 Cov Kauj Ruam (nrog Duab)
DIY Oscilloscope Kit - Sib dhos thiab Qhia Teeb Meem: 10 Cov Kauj Ruam (nrog Duab)

Video: DIY Oscilloscope Kit - Sib dhos thiab Qhia Teeb Meem: 10 Cov Kauj Ruam (nrog Duab)

Video: DIY Oscilloscope Kit - Sib dhos thiab Qhia Teeb Meem: 10 Cov Kauj Ruam (nrog Duab)
Video: DIY Oscilloscope Kit (20$) VS Regular DS Oscilloscope (400$) 2024, Kaum ib hlis
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DIY Oscilloscope Kit - Sib Sau Ua Ke thiab Qhia Teeb Meem
DIY Oscilloscope Kit - Sib Sau Ua Ke thiab Qhia Teeb Meem
DIY Oscilloscope Kit - Sib Sau Ua Ke thiab Qhia Teeb Meem
DIY Oscilloscope Kit - Sib Sau Ua Ke thiab Qhia Teeb Meem
DIY Oscilloscope Kit - Sib Sau Ua Ke thiab Qhia Teeb Meem
DIY Oscilloscope Kit - Sib Sau Ua Ke thiab Qhia Teeb Meem

Kuv xav tau ntau zaus, thaum tsim qee cov khoom siv hluav taws xob oscilloscope los soj ntsuam qhov muaj thiab daim ntawv ntawm cov teeb liab hluav taws xob. Txog tam sim no kuv tau siv lub qub Soviet (xyoo 1988) ib qho channel analog CRT oscilloscope. Nws tseem ua haujlwm tau zoo thiab ib txwm zoo txaus rau lub hom phiaj siv, tab sis hnyav heev thiab tsis xis nyob rau qee qhov haujlwm sab nraud hauv tsev. Txog nws qhov kev hloov pauv kuv tau nrhiav qhov pheej yig thiab lwm txoj hauv kev. Ib txoj hauv kev yog los tsim Arduino raws qhov muaj peev xwm, tab sis nws muaj qee qhov tsis zoo - nws cov analog bandwidth tsawg heev thiab ib txwm, thaum ua qee qhov DIY project pom qhov teeb meem tseem ceeb - qhov twg ntim tag nrho cov khoom siv hluav taws xob no lossis yuav ua li cas thiaj nrhiav tau vaj tsev zoo. Kuv tsis muaj lub tshuab luam ntawv 3D thiab rau kuv qhov muaj peev xwm tsuas yog siv cov txheej txheem muaj nyob hauv khw, dab tsi tsis tas li yog qhov zoo tshaj plaws saib. Txhawm rau zam cov teeb meem no kuv txiav txim siab kom tau txais DIY cov khoom siv Oscilloscope. Tom qab qee qhov kev tshawb fawb kuv txiav txim siab tias nws yuav yog JYETech DSO150 Plhaub. Nws yog qhov me me, muaj zog txaus (raws li ARM Cortex 32 -ntsis microcontroller STM32F103C8 - qhov chaw muaj txiaj ntsig zoo rau cov nti no: stm32duino), Kuv tuaj yeem tso rau hauv kuv lub hnab ris thiab nqa txhua qhov chaw. Cov khoom siv tuaj yeem yuav rau ~ 30 USD hauv banggood, ebay lossis aliexpress.

Cov lus qhia no qhia yuav ua li cas sib sau cov khoom siv kom raug, yam koj yuav tsum tsis txhob ua thiab yuav ua li cas thiaj huv los ntawm cov teeb meem, koj tuaj yeem tsim. Kuv yuav piav qhia txhua yam kuv tau ua dhau los ua ntu zus raws sijhawm.

Kauj Ruam 1: Dab Tsi Sab Hauv

Sab Hauv Dab Tsi
Sab Hauv Dab Tsi

Kuv xaj cov khoom siv thiab tom qab ib txwm tos ib ncig ntawm ib hlis cov khoom tuaj txog thaum kawg. Nws tau ntim zoo. Nws muaj ob lub PCB nrog txhua lub cuab yeej SMD tau siv. (Thaum koj xaj cov khoom siv no ceev faj - muaj ib qho ntawm cov khoom siv uas SMD cov cuab yeej siv tsis tau siv, thiab yog tias koj tsis muaj kev paub dhau los ntawm kev siv cov khoom siv zoo li no - nws yuav yog qhov nyuaj rau koj - ua kom zoo dua cov khoom siv nrog cov laug). Qhov zoo ntawm PCB's yog qhov zoo - txhua lub cuab yeej sau npe thiab yooj yim rau yaj. Ib qho ntawm PCB's yog lub hauv paus tseem ceeb - digital nrog microcontroller. Muaj peb kuj tau txuas nrog xim 2.4 TFT LCD; lwm qhov yog qhov sib piv - nws muaj cov lus sib piv sib xws sib txuas. Tseem muaj lub thawv yas zoo, kab ntawv sojntsuam luv thiab cov lus qhia sib dhos.

Kuv cov lus qhia - ua ntej pib kev sib dhos - nyeem phau ntawv qhia. Kuv tsis tau ua nws thiab kuv tau ntsib teeb meem.

Kauj ruam 2: Cia Pib …

Cia peb pib…
Cia peb pib…

Raws li thawj kauj ruam tau pom zoo los ntsuas lub rooj tsav xwm digital. Kuv tau muab tso rau 4 qhov hloov pauv yam tsis tau siv tshuaj yaj yeeb. Kuv tau pom 12V AC/DC adapter nrog lub qhov (socket) DC kom raug thiab siv nws los ntsuas lub rooj tsavxwm. Yuam kev loj heev! TSIS TXAUS SIAB! Hauv phau ntawv tau sau tseg tias qhov siab tshaj plaws qhov hluav taws xob yuav tsum yog 9V! Kuv pom tias txoj kab kev tswj hwm siv yog AMS1117, uas yuav tsum muaj sia nyob 15V thiab kuv nyob ntsiag to. OK. Thaum thawj qhov kev sim nws tsis ua tiav. Saib cov yeeb yam.

Kauj ruam 3: Soldering…

Soldering…
Soldering…
Soldering…
Soldering…
Soldering…
Soldering…

Raws li thawj zaug kuv tau siv qhov ntsuas qhov ntsuas txuas. Nws yuav tsum xub khoov. Ua raws li lub roj teeb txuas thiab lub zog hloov. Tom qab ntawd los txog 4 tus pin header (J2) rau cov teb encoder. Nrog qhov ntawd cov laug ntawm lub rooj tsavxwm tseem ceeb tau ua tiav.

Kauj Ruam 4: Kuv Muaj Teeb Meem

Kuv Muaj Teeb Meem!
Kuv Muaj Teeb Meem!
Kuv Muaj Teeb Meem!
Kuv Muaj Teeb Meem!
Kuv Muaj Teeb Meem!
Kuv Muaj Teeb Meem!

Muaj 0 Ohm resistor ntawm PCB, uas txuas lub zog hloov pauv. Txhawm rau ua kom lub zog hloov pauv ua haujlwm tau tus tiv thaiv (R30) yuav tsum raug tshem tawm. Yooj yim ua! Kev sim tshiab … Kuv tau muab lub rooj tsavxwm tseem ceeb dua (12V) thiab hloov nws ntawm kev siv lub zog hloov pauv. Lub vijtsam tseem dawb. (saib daim vis dis aus). Ob peb qhov kev sim ua tsis hloov qhov xwm txheej. Tam sim ntawd cov pa luam yeeb me me pib tawm ntawm AMS1117 tus tswj hwm nti thiab nws pob tau tawg. Kuv tsis muag nws thiab tso ib qho tshiab (Kuv muaj ob peb hauv kuv tus kheej cov khoom muaj). Kuv tau rov ua dua lub rooj tsavxwm - dua lub vijtsam dawb - tsis muaj khau raj. Tom qab 20 vib nas this ntxiv cov pa luam yeeb xiav los ntawm tus tswj hwm nti thiab nws tau hlawv dua. Kuv tshem nws tawm ntawm lub rooj tsavxwm. Siv ohmmeter Kuv tau ntsuas qhov tsis kam ntawm cov kab hluav taws xob txuas nrog rau cov khoom siv ntawm AMS1117 nti thiab hauv av. Nws yog xoom Ohm. Ib yam dab tsi mus tsis ncaj ncees lawm ntawm no. Pawg thawj coj tau tuag lawm. Kuv txiav txim siab nrhiav seb qhov teeb meem nyob qhov twg. Muaj ob daim npav ntawm lub rooj tsavxwm - STM32F103C8 thiab qee qhov cim xeeb cim xeeb. Ib ntawm lawv tau ua tsis tiav. Txheeb xyuas uas kuv siv txoj kev txawv txawv. Kuv tau thov 3.3V (dab tsi yuav tsum yog qhov tso tawm ib txwm ntawm AMS1117 tus tswj hwm nti) ntawm kab khoom siv siv lub zog muaj zog. Tom qab ob peb feeb STM32F103C8 nti ua rau kub heev. Nws yog qhov teeb meem. Nws yuav tsum tau muab tshem tawm ntawm PCB Nws yog txoj haujlwm nyuaj heev vim tias kuv siv tsis tau rab phom cua kub - nws yuav ua rau txhua yam khoom siv ib puag ncig puas tsuaj. Tom qab ntawd los rau kuv tuaj lub tswv yim kom desolder lub nti los ntawm nws tus kheej cov cua sov - Kuv tau muab lub rooj tsav xwm dua thiab tom qab ib pliag nti tau kub heev uas tus laug pib yaj. Tom qab ntawd kuv tshem nws nrog kev ncaws me me nyob hauv qab ntawm pawg thawj coj saib. Lub nti yooj yim cia. Siv cov tshuaj tua kab desoldering Kuv tau ntxuav cov kab laug sab rau lub nti.

Kuv txiav txim siab sim kho lub rooj tsavxwm. Tom qab tshem qhov ua tsis tiav lub vijtsam LCD tau rov ua kom pom dawb dua.

Kuv tau xaj ob peb STM32F103C8 chips tsim rau ntawm AliExpress. (4 daim tau ~ 3 USD) thiab tom qab ob peb lub lis piam tos lawv tuaj txog. Kuv tau soldered ib ntawm lawv ntawm lub rooj tsavxwm.

Tam sim no - nws yuav tsum tau programmed kom rov ua haujlwm tau zoo. Yog tias txhua txoj haujlwm tau ua tiav kom raug - txhua yam yuav tsum tau ua tiav dua. Txog qhov ntawd kuj tseem muaj kev daws teeb meem - koj tuaj yeem yuav ib qho hauv Aliexpress. Nws yog tus qauv 2.4 37 tus pin xim TFT LCD siv ILI9341 tus tswj. Txheeb xyuas tus lej xaj.

Yuav ua li cas rau txheej txheem STM32F103C8 nti tau piav qhia hauv qib tom ntej.

Kauj ruam 5: Programming

Programming
Programming
Programming
Programming
Programming
Programming

Tus txheej txheem ntawm lub cajmeem ARM nti tau sau rau hauv daim ntawv txuas nrog.

Hauv qab qhov txuas no koj tuaj yeem rub tawm qhov cuab yeej ntsais kawg los ntawm STM qhov chaw.

Yo tuaj yeem pom kuv teeb tsa ntawm daim duab. Kuv tau txuas nrog cov ntawv hex, uas kuv tau siv. Txog qhov kawg, koj tuaj yeem mus ntsib JYETech qhov chaw. Rau USB rau kev sib txuas lus txuas kuv tau siv PL2303 raws tus hloov pauv. FT323RL kuj tseem yuav ua haujlwm. CH340g ib yam. Ua ntej kev teeb tsa ntawm pawg thawj coj, qee tus neeg tawm tsam yuav tsum tau desoldered los ntawm pawg thawj coj saib. (saib daim ntawv). Tsis txhob hnov qab solder lawv dua thaum txhua yam npaj txhij. Kuv muaj hmoo thiab txhua yam zoo dua. Kuv txuas ntxiv nrog cov laug ntawm analog board.

Kauj Ruam 6: Rov Ua Dua

Dua Soldering
Dua Soldering
Dua Soldering
Dua Soldering
Dua Soldering
Dua Soldering

Ua ntej yuav tsum tau soldered cov resistors. Kuv tau siv Ohmmeter los tshuaj xyuas lawv tus nqi es tsis siv cov xim xim.. Ntawm txhua qhov muag ib feem kuv muab tus cim rau ntawm phau ntawv kom paub tias kuv nyob qhov twg.

Tom qab ntawd kuv tau siv cov khoom siv hluav taws xob ua hluav taws xob, cov khoom siv txiav tawm, lub zog hloov pauv, lub tshuab hluav taws xob hluav taws xob, BNC txuas, tus pin header.

Kauj Ruam 7: Rotary Encoder

Rotary Encoder
Rotary Encoder

Nws yuav tsum tau muab tso rau ntawm lub rooj tsav xwm me. Ua tib zoo saib xyuas kom zoo rau ntawm PCB - hauv lwm qhov xwm txheej yuav ua tsis tiav.

Kauj ruam 8: Sib dhos

Sib dhos
Sib dhos
Sib dhos
Sib dhos
Sib dhos
Sib dhos

Tam sim no peb tau npaj rau kev sib dhos.

Thawj qhov LCD hauv qhov chaw tshwj xeeb. Kuv tau tshem tawm cov ntawv tiv thaiv ua ntej ntawd. Hauv qab qhov kuv tau muab ob peb txheej ntawv mos mos hauv chav ua noj. Khoov maj mam muab LCD txuas txuas ncaj qha cable thiab muab lub rooj tsavxwm tseem ceeb hla nws. Ntxig rau tus lej nkag teb chaws hauv lub taub hau txuas thiab kho nws siv ob ntawm cov ntsia hlau luv

Kauj ruam 9: Kho

Kho
Kho
Kho
Kho
Kho
Kho

Tam sim no lub rooj sib tham analog yuav tsum tau ntxig raws li qhia hauv daim duab. Txoj hauv kev no qee qhov hluav taws xob analog yuav tsum tau tshuaj xyuas los ntawm voltmeter. Nco ntsoov tias qee qhov ntawm lawv nyob ntawm qhov muab hluav taws xob (Kuv tau pom qhov no). Cov hluav taws xob uas tau sau hauv cov lus ntawm qib 4 ntawm phau ntawv ntsuas yog ntsuas ntawm qhov hluav taws xob 9.2V. Tom qab ntawd qee qhov kev cuam tshuam ntawm lub teeb liab (saib daim duab saum toj no) tuaj yeem kho tau los ntawm kev kho lub tshuab txiav cov cuab yeej. Saib cov txheej txheem hauv phau ntawv qhia… thiab txuas cov yeeb yaj kiab.

Kauj Ruam 10: Sib sau ua ke thiab Xeem Kawg

Sib dhos thiab Kuaj Kawg
Sib dhos thiab Kuaj Kawg
Sib dhos thiab Kuaj Kawg
Sib dhos thiab Kuaj Kawg
Sib dhos thiab Kuaj Kawg
Sib dhos thiab Kuaj Kawg

Tam sim no lub rooj sib tham zoo sib xws raug kho nyob rau hauv qab npog. Ob lub rooj sib tham tau koom ua ke los ntawm lawv cov pin-header interface. Ntawm nrig nrig lub davhlau ya nyob twg xeem yuav tsum tau muab ntxaws. Lub hau npog sab saum toj tau muab tso rau. Nco ntsoov tias yog tias koj tsis taw qhia nws kom raug, koj yuav tsis tuaj yeem kaw lub thawv. (Saib daim duab saum toj no rau kev qhia kom raug). Cov tsev nyob raug kaw thiab tom qab ntawd kho los ntawm 4 tus ntsia hlau. Raws li cov kauj ruam kawg lub pob yas yuav tsum tau muab tso rau saum lub qhov rooj nkag.

Tam sim no qhov dav tau npaj siv. Nws muaj lub tshuab ntsuas ntsuas sab hauv sab hauv thiab lub teeb liab no tuaj yeem siv rau qee qhov kev hloov kho thiab kev kawm. Kev ua haujlwm ntawm pob qhov rooj sib txawv tau piav qhia hauv phau ntawv qhia. Cov vis dis aus luv luv qhia qee qhov haujlwm. Ib ntawm lawv qhia ntau qhov teeb meem tsis nyob hauv lub sijhawm tiag tiag, dab tsi tuaj yeem muaj txiaj ntsig zoo hauv qee kis.

Ua tsaug rau koj mloog thiab hmoov zoo nrog kev ua si. Muaj kev lom zem nrog cov khoom ua si me me - cov khoom ua si rau cov neeg laus thiab cov khoom siv hluav taws xob me me,

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