Cov txheej txheem:
- Kauj Ruam 1: Sau cov Cheeb Tsam Xav Tau
- Kauj Ruam 2: Kos Daim Duab Daim Duab
- Kauj Ruam 3: Ua Lub Hwj Huam Muab Cov Qauv
- Kauj Ruam 4: Tsim PCB thiab xaj
- Kauj Ruam 5: Muab cov Cheebtsam & Txuas Cov Khoom Siv Hluav Taws Xob
- Kauj Ruam 6: Calibrate Voltmeter
- Kauj ruam 7: Nws ua tiav
Video: Rechargeable Digital Voltmeter Siv ICL7107 ADC: 7 Cov Kauj Ruam (nrog Duab)
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:27
Hauv qhov kev qhia no kuv yuav qhia koj yuav ua li cas thiaj ua tau yooj yim super digital voltmeter uas tuaj yeem ntsuas qhov ntsuas hluav taws xob los ntawm 20 mV txog 200V. Txoj haujlwm no yuav tsis siv ib lub microcontroller zoo li arduino. Qhov chaw ntawm qhov ADC, piv txwv li ICL7107 yuav raug siv nrog qee yam tsis zoo. Nws yuav siv lub roj teeb Li-ion uas tuaj yeem siv lub voltmeter no tau 12 teev. Thaum nws tsis muaj kua txiv, koj tuaj yeem them nws los ntawm kev siv lub micro-usb cable.
Koj tuaj yeem saib cov vis dis aus hauv qab no uas npog tib lub ncauj lus nrog kev sib tham ntxaws ntxaws.
Sau npe yuav ua rau peb cov channel yog tias koj nyiam qhov haujlwm no. Yog li tsis muaj ado ntxiv peb pib cov vis dis aus.
www.youtube.com/c/being_engineers1
Kauj Ruam 1: Sau cov Cheeb Tsam Xav Tau
Koj yuav xav tau cov khoom hauv qab no los ua qhov voltmeter (Tsis muaj qhov hais ntau npaum li cas txhais tau tias 1) -
- ICL7107 IC, 40 tus pin IC puag
- TL7660 IC, 8 tus pin IC puag
- 4 X 7 Segment tso saib ntau anode
- 10k Potentiometer
- Terminal thaiv
- Poj niam txiv tsawb taub hau
- Txiv neej thiab poj niam headers
- 2 X 10 uF tab
- 5 X 330E Resistor
- 2 X 100k, 2 X 10k, 1 X 1k Resistor
- 1 X 1M, 1 X 22k, 1 X 47k Resistor
- 0.22uF, 0.47uF lub kaus mom
- 2 X 100nF, 1 X 100pF lub kaus mom
- Xaub hloov rau ON/OFF
- Multimeter probes
- Li-ion roj teeb
- Li-ion charger raws li TP4056
- 3.7-4.2v rau 5v txhawb
Sib sau tag nrho cov khoom no thiab tom qab ntawd txav mus rau qhov tsim lub Circuit Court.
POM -
Kauj Ruam 2: Kos Daim Duab Daim Duab
Kuv siv EasyEDA los kos tag nrho cov Circuit no. EasyEDA yog lub vev xaib zoo los tsim cov kab hluav taws xob loj thiab nyuaj. Nws ua rau lub neej yooj yim dua tom qab. Koj tuaj yeem pom cov duab kos hauv kab hauv qab no PDF rau koj siv.
Circuit Diagram -
Kauj Ruam 3: Ua Lub Hwj Huam Muab Cov Qauv
Yog li hauv cov khoom siv hluav taws xob muaj cov hauv paus 3 ntu. Lub roj teeb Li-ion, ib lub TP4056 Li-po them nyiaj thiab lub zog txhawb nqa uas yuav nce qhov hluav taws xob los ntawm lub roj teeb mus rau 5V. Kuv tau siv 1000maH Li-ion ntawm no, tab sis koj tuaj yeem mus nrog lub roj teeb muaj peev xwm me dua. Cov kev sib txuas tau pom hauv PDF hauv qab no.
Daim phiaj xwm hluav taws xob muab hluav taws xob -
Kauj Ruam 4: Tsim PCB thiab xaj
Thaum cov kab kos raug kos, nws yog lub sijhawm los tsim PCB. Kuv siv PCB tsim lub portal hauv EasyEDA rau tsim kuv li PCB. Rau cov pib tshiab qhov no yog qhov tsim nyog tshaj Eagle lossis lwm yam software CAD. Thaum PCB tau tsim, Kuv tau xa cov ntaub ntawv gerber rau JLCPCB thiab hu rau hauv qhov xav tau teeb tsa. Tom qab ntawd kuv xaj 10 ntawm PCBs los ntawm lawv. JLCPCB yog ib lub chaw tsim khoom PCB zoo tshaj plaws ntawm lub sijhawm tsis ntev los no thiab tus nqi kuj tseem zoo nkauj tsim nyog. Kuv yuav pom zoo kom siv lawv cov kev pabcuam rau txhua tus yog tias koj tab tom xav txog kev tsim qauv koj txoj haujlwm. Yog li tom qab tso kuv xaj kuv tau txais kuv cov khoom xa tuaj hauv 5 hnub.
PCB gerber file -
PCB PDF hauv 1: 1 Nplai -
Kauj Ruam 5: Muab cov Cheebtsam & Txuas Cov Khoom Siv Hluav Taws Xob
Thaum koj tau txais PCBs, nws yog lub sijhawm los muab cov khoom sib txuas rau ntawm nws. Ua raws daim duab qhia chaw thiab tso cov khoom kom raug. Tom qab soldering, txuas qhov VCC zoo xws li 5V thiab GND rau VCC thiab GND ncoo feem nyob hauv qab hauv qab ntawm PCB. Nws yuav tsum tsis txhob nyuaj li kev sib txuas hauv Circuit Court yog yooj yim heev ua haujlwm nrog.
Kauj Ruam 6: Calibrate Voltmeter
Thaum koj tau ua tag nrho txhua yam, koj yuav tsum ntsuas lub voltmeter nrog kev hwm rau yav dhau los calibrated voltmeter. Kuv muaj multimeter raws li kev siv.
Yog li ua nws, fais fab Voltmeter thiab multimeter. Muab lub multimeter tso rau hauv Voltmeter ntau. Txuas ob lub meter no ua ke mus rau ib qho khoom siv hluav taws xob. Txheeb ob qho kev nyeem ntawv. Tig lub potentiometer mus rau ib qho kev taw qhia kom txog rau thaum nyeem sib phim rau ib leeg. Thaum ua tiav, tam sim no koj lub voltmeter tau ntsuas zoo kawg nkaus rau lub multimeter.
Kauj ruam 7: Nws ua tiav
Tam sim no lub voltmeter ua tiav. Koj tuaj yeem siv lub ntsuas hluav taws xob no hauv koj lub hom phiaj ntsuas txij tam sim no mus. Nco ntsoov xaiv qhov tsim nyog kom raug thaum ntsuas qhov hluav taws xob. Txwv tsis pub cov txiaj ntsig yuav tsis raug.
Vam tias koj tau nyiam txoj haujlwm no. Tawm tswv yim yog tias koj muaj kev ua xyem xyav. Kuv yuav sim daws qhov teeb meem nyob ntawd.
Ua tsaug. Saib xyuas.
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