Pocket Signal Visualizer (Pocket Oscilloscope): 10 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Nyob zoo txhua tus, Peb txhua tus ua ntau yam nyob hauv txhua hnub. Rau txhua txoj haujlwm nyob qhov twg xav tau qee yam cuab yeej. Qhov ntawd yog ua, ntsuas, ua tiav thiab lwm yam.. Yog li rau cov neeg ua haujlwm hluav taws xob, lawv xav tau cov cuab yeej xws li cov hlau txuas, ntau lub ntsuas, oscilloscope, thiab lwm yam. Tab sis qhov teeb meem tseem ceeb nrog oscilloscope yog tias nws hnyav, nyuaj thiab kim. Yog li qhov no ua, nws ua npau suav rau cov pib siv hluav taws xob. Yog li los ntawm txoj haujlwm no kuv hloov tag nrho cov tswv yim oscilloscope thiab ua qhov me me uas pheej yig rau cov pib tshiab. Qhov ntawd txhais tau tias ntawm no kuv tau ua lub hnab ntim me me me oscilloscope lub npe hu ua "Pocket Signal Visualizer". Nws muaj 2.8 "TFT zaub rau kos lub teeb liab hauv cov lus nkag thiab Li-ion cell rau ua kom nws yog lub tshuab nqa tau. version ntawm peb cov kws tshaj lij oscilloscope. Lub hnab oscilloscope no ua rau txhua tus neeg nkag tau mus rau oscilloscope.

Nws zoo li cas? Koj xav li cas? Tawm tswv yim rau kuv.

Yog xav paub ntxiv txog qhov haujlwm no mus ntsib kuv BLOG, 0creativeengineering0.blogspot.com/2019/09/pocket-signal-visualizer-diy-home-made.html

Txoj haujlwm no tau txais kev pib los ntawm txoj haujlwm zoo sib xws hauv lub vev xaib muab npe bobdavis321.blogspot.com

Khoom siv

• ATMega 328 micro-maub los
• ADC nti TLC5510
• 2.8 "TFT zaub
• Li-ion cell
• ICs muab rau hauv daim duab qhia chaw
• Capacitors, resistors, diodes, thiab lwm yam muab rau hauv daim duab hluav taws xob
• Tooj tooj liab clad, solder hlau
• Cov xov tooj tooj liab txha hniav laus me me
• Laub lub taub hau hloov thiab lwm yam.

Txog cov ncauj lus kom ntxaws cov npe paub, saib daim duab qhia chaw. Cov duab yog muab rau hauv cov kauj ruam tom ntej.

Kauj Ruam 1: Cov Cuab Yeej Tseem Ceeb

Ntawm no txoj haujlwm feem ntau yog tsom mus rau cov khoom siv hluav taws xob. Yog li cov cuab yeej siv feem ntau yog cov cuab yeej hluav taws xob. Cov cuab yeej siv los ntawm kuv tau muab rau hauv qab no. Koj xaiv koj cov cuab yeej uas koj nyiam.

Micro soldering Iron, SMD desoldering station, Multi-meters, Oscilloscope, Tweezers, ntsia hlau tsav, pliers, hack-saw, cov ntaub ntawv, tes driller, thiab lwm yam.

Cov cuab yeej duab tau muab rau saum toj no.

Kauj Ruam 2: Npaj Ua Ntej

Kuv lub tswv yim yog ua kom lub hnab nqa nqa oscilloscope, uas muaj peev xwm nthuav tawm txhua yam ntawm nthwv dej. Ua ntej kuv npaj PCB thiab tom qab ntawd nws muab tso rau hauv ib lub thawv. Rau lub thawv ntawv kuv siv lub thawv me me quav tau. Cov khoom vaj khoom tsev tuaj yeem ua kom yooj yim ntawm cov cuab yeej no. Cov zaub yog nyob hauv thawj ntu thiab pawg thawj coj thiab tswj kev hloov pauv hauv ib nrab tom ntej. PCB tau muab faib ua ob daim raws li qhov kawg PCB thiab PCB tseem ceeb. Lub oscilloscope yog ib qho uas tuaj yeem txav tau, yog li kuv siv qhov tsis siv neeg ON/OFF hloov rau nws. Nws hloov ON thaum nws qhib thiab nws tau txiav tawm thaum nws kaw. Li-ion cell tau muab tso rau hauv qab PCBs. Nov yog kuv txoj kev npaj. Yog li thawj zaug kuv ua ob lub PCBs. Txhua qhov khoom siv yog SMD qhov sib txawv. Nws txo cov PCB loj heev.

Kauj Ruam 3: Daim duab Circuit Court

Daim duab hluav taws xob puv puv tau muab rau saum toj no. Nws tau muab faib ua ob qho kev sib cais raws li qhov kawg thiab qhov tseem ceeb PCB. Cov kab hluav taws xob yog qhov nyuaj, vim tias nws muaj ntau ntawm ICs thiab lwm yam khoom siv tsis zoo. Hauv qhov kawg-qhov kawg ntawm cov khoom tseem ceeb yog cov txheej txheem ua kom lub zog qis, cov tswv yim xaiv multiplexer thiab cov tswv yim nkag. Cov tswv yim txo hwj chim tau siv los hloov qhov sib txawv ntawm qhov hluav taws xob mus rau qhov xav tau qhov hluav taws xob tso rau lub oscilloscope, nws tsim cov oscilloscope muaj peev xwm ua haujlwm ntawm ntau yam ntawm cov hluav taws xob tso tawm. Nws yog tsim los ntawm kev siv lub peev xwm tiv thaiv kev faib tawm thiab lub peev xwm txuas nrog txuas mus rau txhua tus tiv thaiv kom nce cov lus teb (them nyiaj rau tus neeg txo qis). Cov tswv yim xaiv multiplexer yog ua haujlwm zoo li kev hloov pauv hloov los xaiv ib lub tswv yim los ntawm cov tswv yim sib txawv los ntawm tus kws kho qhov muag tab sis ntawm no cov tswv yim multiplexer tau xaiv los ntawm cov ntaub ntawv digital los ntawm cov txheej txheem tseem ceeb. Qhov tsis yog siv los txhawb lub zog tawm tswv yim. Nws tau tsim los ntawm kev siv op-amp hauv qhov ntsuas hluav taws xob. Nws txo qhov kev thauj khoom ntawm lub teeb liab vim qhov seem. Cov no yog qhov tseem ceeb ntawm qhov kawg.

Yog xav paub ntau ntxiv, mus ntsib kuv BLOG, Lub PCB tseem ceeb muaj lwm cov txheej txheem ua haujlwm digital. Feem ntau nws muaj lub roj teeb Li-ion, Li-ion tiv thaiv Circuit, 5V txhawb kev hloov pauv, -ve lub tshuab hluav taws xob, USB interface, ADC, Lub sijhawm siv ntau zaus, thiab lub micro-controller loj. Li-ion charger Circuit siv los them Li-ion cell los ntawm lub xov tooj ntawm tes qub hauv qhov muaj txiaj ntsig thiab ntse. Nws siv TP 4056 IC los them lub xov tooj ntawm 5V los ntawm micro-USB chaw nres nkoj. Nws tau piav qhia ntxaws hauv kuv qhov BLOG yav dhau los, https://0creativeengineering0.blogspot.com/2019/05/diy-li-ion-cell-charger-using-tp4056.html. Cov tom ntej no yog Li-ion tiv thaiv Circuit. Nws tau siv los tiv thaiv Cell ntawm luv Circuit Court, them ntau dua thiab lwm yam. Nws piav qhia hauv kuv ib qho ntawm BLOG yav dhau los,. Cov tom ntej no yog 5V txhawb kev hloov pauv. Nws tau siv los hloov 3.7 V cell voltage mus rau 5V rau kev ua haujlwm zoo dua ntawm cov xov tooj cua digital. Cov lus qhia hauv Circuit tau piav qhia hauv kuv qhov BLOG yav dhau los, https://0creativeengineering0.blogspot.com/2019/05/diy-tiny-5v-2a-boost-converter-simple.html. Lub tshuab hluav taws xob -ve tau siv los tsim -ve 3.3V rau op -amp ua haujlwm. Nws tau tsim los ntawm kev siv lub tshuab hluav taws xob them nqi. Nws tau tsim los ntawm kev siv 555 IC. Nws yog xaim ua tus oscillator kom them thiab tso tawm cov khoom siv hluav taws xob hauv lub tshuab hluav taws xob them. Nws zoo heev rau daim ntawv thov tam sim no. USB interface txuas lub PC nrog peb oscilloscope micro-controller rau kev hloov kho firmware. Nws muaj ib tus IC rau txheej txheem no hu ua CH340. ADC hloov pauv cov tswv yim analog teeb liab rau hauv daim ntawv tsim nyog rau micro-maub los. ADC IC siv ntawm no yog TLC5510. Nws yog lub nrawm nrawm ib nrab nyem hom ADC. Nws muaj peev xwm ua haujlwm ntawm tus nqi piv txwv siab. Lub moos hluav taws xob ntau zaus ua haujlwm ntawm 16 MHz zaus. Nws muab cov cim qhia tsim nyog rau ADC nti. Nws tsim los ntawm kev siv TSIS MUAJ lub rooj vag IC thiab siv lead ua ntawm 16 MHZ thiab qee yam khoom siv tsis zoo. Nws piav qhia ntxaws hauv kuv qhov BLOG, https://0creativeengineering0.blogspot.com/2019/09/simple-16-mhz-crystal-oscillator.html. Lub hauv paus tseem ceeb tswj hwm siv ntawm no yog ATMega328 AVR micro-maub los. Nws yog lub plawv ntawm lub voj voog no. Nws yog ntes thiab khaws cov ntaub ntawv los ntawm ADC. Tom qab ntawd nws tsav lub TFT zaub los tso saib lub teeb liab nkag mus. Cov tswv yim tswj kev hloov pauv kuj tseem txuas nrog ATMega328. Nov yog teeb tsa kho vajtse yooj yim.

Yog xav paub ntau ntxiv txog qhov Circuit thiab nws tsim, mus ntsib kuv BLOG, 0creativeengineering0.blogspot.com/2019/09/pocket-signal-visualizer-diy-home-made.html

Kauj Ruam 4: PCB Tsim

Ntawm no kuv tsuas yog siv cov khoom SMD rau tag nrho cov Circuit Court. Yog li tsim thiab txheej txheem ntxiv yog qhov nyuaj me ntsis. Nov yog daim duab qhia chaw thiab PCB txheej txheem tsim los ntawm kev siv EasyEDA online platform. Nws yog lub platform zoo heev uas muaj txhua lub tsev qiv ntawv tivthaiv. Ob lub PCBs tau tsim cais. Cov chaw tsis siv hauv PCBs tau npog nrog cov kab hauv av kom tsis txhob muaj teeb meem suab nrov. Cov tuab tuab tuab ntawm tooj liab yog qhov me me, Yog li siv lub tshuab luam ntawv zoo los luam cov txheej txheem, txwv tsis pub qee qhov cim tseg tau txais qhov tsis sib xws. Cov txheej txheem txawj ntse yog muab hauv qab no,

• Luam tawm PCB tsim (2/3 daim ntawv) rau hauv daim duab/ntawv ci (siv lub tshuab luam ntawv zoo)
• Luam theej duab PCB txheej txheem rau txhua qhov tsis sib xws hauv cov tooj liab
• Xaiv qhov txheej txheem PCB zoo uas tsis muaj qhov tsis xws
• Txiav qhov txheej txheem uas siv txiab

Cov ntaub ntawv tsim qauv tau muab rau hauv qab no.

Kauj Ruam 5: Npaj Tooj Tooj

Rau PCB ua kuv siv ib sab tooj liab-clad. Qhov no yog cov khoom siv tseem ceeb ntawm PCB ua. Yog li xaiv cov tooj liab zoo zoo. Cov txheej txheem-paub qab hau yog muab hauv qab no,

• Siv cov tooj liab zoo zoo
• Kos qhov dav ntawm PCB txheej txheem hauv tooj liab-clad siv tus cim
• Txiav cov tooj liab-clad los ntawm cov cim uas siv lub hacksaw hniav
• Ua kom lub ntsej muag ntse ntawm PCB siv cov ntawv xuab zeb lossis cov ntawv
• Ntxuav sab tooj liab siv cov ntawv xuab zeb thiab tshem cov hmoov av

Kauj Ruam 6: Hloov Tone

Ntawm no hauv theem no peb hloov PCB txheej txheem mus rau hauv tooj liab-clad siv cov txheej txheem hloov cua sov. Rau txoj kev hloov cua sov kuv siv lub thawv hlau ua cua sov. Cov txheej txheem yog muab hauv qab no,

• Ua ntej tso PCB txheej txheem hauv tooj liab-clad hauv qhov kev taw qhia uas teeb tsa tig mus rau sab tooj
• Txhim kho qhov teeb tsa hauv nws txoj haujlwm los ntawm kev siv cov kab xev
• Npog tag nrho kev teeb tsa siv daim ntawv dawb
• Thov lub thawv hlau rau sab tooj liab txog li 10-15 feeb
• Tom qab cua sov tos qee lub sijhawm kom txias nws
• Muab PCB nrog daim ntawv tso rau hauv lub khob dej
• Tom qab ntawd tshem daim ntawv los ntawm PCB siv tes nrog kev saib xyuas (ua nws maj mam)
• Tom qab ntawd saib nws thiab xyuas kom nws tsis muaj qhov tsis xws luag

Kauj Ruam 7: Etching thiab Ntxuav

Nws yog txheej txheem tshuaj tshem tawm cov tooj liab uas tsis xav tau los ntawm tooj liab clad raws li txheej txheej PCB. Rau cov txheej txheem tshuaj no peb xav tau cov tshuaj ferric chloride (cov tshuaj kua). Cov tshuaj daws cov tooj liab uas tsis npog ntsej muag rau cov tshuaj. Yog li los ntawm cov txheej txheem no peb tau txais PCB ib yam li hauv PCB txheej txheem. Cov txheej txheem rau txheej txheem no yog muab hauv qab no.

• Siv lub npog ntsej muag PCB uas tau ua tiav hauv cov kauj ruam dhau los
• Nqa cov tshuaj ferric chloride hauv lub thawv yas thiab yaj nws hauv dej (cov hmoov txiav txim siab qhov concentration, siab dua nrawm cov txheej txheem tab sis qee zaum nws ua rau PCB puas tsuaj yog qhov nruab nrab)
• Raus cov npog ntsej muag PCB hauv cov tshuaj
• Tos qee lub sijhawm (tsis tu ncua kuaj xyuas qhov ua tiav lossis tsis tiav) (lub hnub ci teeb kuj tseem ua rau txheej txheem)
• Tom qab ua tiav qhov ua tau zoo tshem tawm lub npog ntsej muag los ntawm kev siv cov ntawv xuab zeb
• Ua kom cov npoo rov du dua
• Ntxuav PCB

Peb ua tiav PCB tsim

Kauj ruam 8: Soldering

SMD soldering yog me ntsis nyuaj dua li qhov zoo tib yam los ntawm qhov siv lub qhov muag. Cov cuab yeej tseem ceeb rau txoj haujlwm no yog tweezers thiab rab phom cua kub los yog cov hlau me me. Teem lub phom cua kub ntawm 350C temp. Tshaj cua sov qee lub sijhawm ua rau puas lub Cheebtsam. Yog li tsuas yog siv cov cua sov tsawg rau PCB. Cov txheej txheem yog muab hauv qab no.

• Ntxuav PCB los ntawm kev siv PCB ntxuav (iso-propyl cawv)
• Siv cov tshuaj txhuam txhuam rau txhua daim ntaub qhwv hauv PCB
• Muab tag nrho cov khoom siv rau nws lub ncoo siv tus tweezers raws li daim duab qhia chaw
• Txheeb ob zaug txhua qhov chaw ua haujlwm yog raug lossis tsis yog
• Thov phom cua kub ntawm huab cua qis (nrawm nrawm ua rau qhov tsis raug ntawm cov khoom)
• Ua kom ntseeg tau tias txhua qhov kev sib txuas tau zoo
• Ntxuav PCB los ntawm kev siv IPA (PCB nqus tsev ntxhua khaub ncaws) tov
• Peb ua cov txheej txheem txheej txheem ua tiav

Cov vis dis aus hais txog SMD soldering tau muab rau saum toj no. Thov saib nws.

Kauj Ruam 9: Kev Sib Sau Zaum Kawg

Ntawm no hauv cov theem no kuv sib sau ua ke tag nrho cov khoom rau hauv ib yam khoom. Kuv ua tiav PCBs hauv cov kauj ruam dhau los. Ntawm no kuv tso 2 PCBs rau hauv lub thawv pleev. Nyob rau sab saum toj ntawm lub thawv pleev kuv tso lub vijtsam LCD. Rau qhov no, kuv siv qee cov ntsia hlau. Tom qab ntawd kuv tso cov PCBs rau hauv qab. Nov kuj tseem siv qee qhov ntsia hlau txhawm rau txhim kho PCBs hauv qhov chaw. Lub roj teeb Li-ion tau muab tso rau hauv qab PCB tseem ceeb. Kev hloov pauv PCB tau muab tso rau saum lub roj teeb los ntawm kev siv daim kab xev ob tog. Qhov kev hloov pauv PCB tau txais los ntawm tus qub Walkman PCB. PCBs thiab LCD npo tau txuas nrog los ntawm kev siv cov tooj liab tooj liab txha hniav laus. Nws yog vim nws yoog raws tau yooj yim dua li cov xov hlau. Qhov tsis siv neeg qhib/tua tsis siv neeg txuas nrog rau sab sab. Yog li thaum peb khawm sab saum toj nws yog tig lub oscilloscope. Nov yog cov ntsiab lus sib dhos.

Kauj ruam 10: Ua tiav Cov Khoom

Cov duab saum toj no qhia kuv cov khoom tiav.

Nws muaj peev xwm ntsuas sine, xwmfab, voos voos. Kev sim oscilloscope tau qhia hauv video. Saib nws. Qhov no muaj txiaj ntsig zoo rau txhua tus neeg uas nyiam Arduino. Kuv nyiam nws heev. Qhov no yog ib yam khoom txaus. Koj xav li cas? Thov tawm tswv yim rau kuv.

Yog koj nyiam nws thov pab txhawb nqa kuv.

Yog xav paub ntau ntxiv txog kev thov txuas mus rau kuv nplooj ntawv BLOG. Txuas txuas hauv qab no.

Yog xav paub ntau cov phiaj xwm, mus ntsib kuv YouTube, Qhia thiab nplooj ntawv Blog.

Ua tsaug rau kev mus saib kuv qhov project page.

Nyob zoo.

Ntsib koj dua ……