Yuav Ua Li Cas Siv DC rau DC Buck Converter LM2596: 8 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24

Cov ntawv qhia no yuav qhia yuav siv LM2596 Buck Converter li cas kom siv tau cov cuab yeej xav tau qhov sib txawv. Peb yuav qhia qhov twg yog hom roj teeb zoo tshaj plaws los siv nrog lub hloov pauv thiab yuav ua li cas thiaj tau txais ntau dua li ib qho tso tawm los ntawm kev hloov pauv (tsis ncaj qha).

Peb yuav piav qhia vim li cas peb tau xaiv tus hloov pauv no thiab peb tuaj yeem siv cov haujlwm zoo li cas.

Tsuas yog ntawv me me ua ntej peb pib: Thaum ua haujlwm nrog cov neeg hlau thiab khoom siv hluav taws xob thov tsis txhob saib qhov tseem ceeb ntawm kev faib hluav taws xob.

Nov yog peb thawj qhov kev qhia hauv peb kab lus ntawm Kev Tshaj Tawm Fais Fab, peb ntseeg tias Kev Tshaj Tawm Fais Fab feem ntau raug saib tsis taus thiab qhov no yog qhov laj thawj loj vim li cas coob leej neeg poob kev txaus siab rau cov neeg hlau thaum pib, piv txwv li lawv hlawv lawv cov khoom thiab tsis kam yuav cov khoom tshiab los ntawm kev ntshai kom tsuas yog hlawv lawv dua, peb cia siab tias kab ntawv no ntawm Kev faib hluav taws xob yuav pab koj nkag siab yuav ua li cas ua haujlwm nrog hluav taws xob zoo dua.

Khoom siv:

1. LM2596 DC rau DC Converter
2. 9V Alkaline Roj Teeb
3. Arduino Ib
4. Jumper Hlau
5. 2S Li-Po lossis Li-Ion Roj teeb
6. 2A lossis 3A Fuse
7. Servo Tsav SG90
8. Me Breadboard

Kauj ruam 1: Pinout Txheej txheem cej luam

Ntawm no Koj tuaj yeem pom LM2596 DC rau DC Converter Module zoo li cas. Koj tuaj yeem pom tias LM2596 yog IC, thiab tus qauv yog kev tsim hluav taws xob nyob ib puag ncig IC kom nws ua haujlwm raws li kev hloov pauv hloov tau.

Pinout rau LM2596 module yog qhov yooj yim heev:

IN+ Ntawm no peb txuas cov xaim liab los ntawm roj teeb (lossis lub zog siv), qhov no yog VCC lossis VIN (4.5V - 40V)

IN- Ntawm no peb txuas cov xaim dub los ntawm roj teeb (lossis lub zog siv), qhov no yog av, GND lossis V-

Tawm+ Ntawm no peb txuas qhov zoo ntawm qhov hluav taws xob faib hluav taws xob lossis cov khoom siv hluav taws xob

OUT- Ntawm no peb txuas hauv av ntawm lub zog faib hluav taws xob lossis cov khoom siv hluav taws xob

Kauj Ruam 2: Kho Cov Khoom Tawm

Qhov no yog pob hloov pauv lub ntsiab lus tias nws yuav siv hluav taws xob ntau dua thiab hloov nws mus rau qhov qis dua. Txhawm rau kho qhov hluav taws xob peb yuav tsum ua ob peb kauj ruam.

1. Txuas lub hloov pauv nrog lub roj teeb lossis lwm lub zog siv. Paub ntau npaum li cas qhov hluav taws xob koj tau nkag rau hauv lub hloov pauv.
2. Teem lub multimeter los nyeem qhov hluav taws xob thiab txuas cov zis ntawm lub hloov pauv rau nws. Tam sim no koj tuaj yeem pom qhov hluav taws xob ntawm cov zis.
3. Kho lub trimmer (ntawm no 20k Ohm) nrog cov ntsia hlau me me kom txog thaum qhov hluav taws xob tau teeb tsa rau qhov xav tau tso tawm. Xav tias dawb tig lub trimmer hauv ob qho kev qhia kom tau txais kev xav yuav ua haujlwm nrog nws li cas. Qee zaum thaum koj siv lub tshuab hloov pauv thawj zaug koj yuav tsum tig lub hau ntswj taub hau 5-10 lub voj voos kom nws ua haujlwm. Ua si nrog nws kom txog thaum koj tau txais qhov kev xav.
4. Tam sim no tias qhov ntsuas hluav taws xob tau hloov pauv kom tsim nyog, tsis txhob siv lub multimeter txuas lub cuab yeej/module uas koj xav kom muaj zog.

Hauv ob peb kauj ruam tom ntej no peb xav qhia koj ob peb yam piv txwv ntawm yuav ua li cas tsim qee qhov hluav taws xob thiab thaum twg siv cov hluav taws xob no. Cov theem no tau qhia ntawm no yog los ntawm tam sim no cuam tshuam rau txhua qhov piv txwv.

Kauj Ruam 3: Kev Ntsuas Tam Sim No

Kev ntsuas tam sim no ntawm IC LM2596 yog 3 Amps (tam sim no khov kho), tab sis yog tias koj rub tau los ntawm nws 2 lossis ntau dua Amps rau lub sijhawm ntev nws yuav sov thiab hlawv tawm. Raws li nrog rau feem ntau ntawm cov cuab yeej ntawm no peb kuj yuav tsum tau muab txias txaus rau nws ua haujlwm ntev thiab ntseeg tau.

Ntawm no peb xav kos qhov sib piv nrog PC thiab CPU's, raws li koj feem ntau tau paub, koj lub PC ua kom sov thiab sib tsoo, txhawm rau txhim kho lawv qhov kev ua tau zoo peb xav tau txhawm rau txhim kho lawv cov cua txias, peb tuaj yeem hloov qhov txias nrog qhov zoo dua lossis huab cua. txias dua lossis qhia tau zoo dua nrog kua txias, nws zoo ib yam nrog txhua qhov khoom siv hluav taws xob zoo li IC's. Yog li txhawm rau txhim kho nws peb yuav ua kua nplaum txias me me (hloov pauv cua sov) rau saum nws thiab qhov no yuav ua rau faib cov cua sov los ntawm IC mus rau huab cua ib puag ncig.

Cov duab saum toj no qhia ob qho qauv ntawm LM2596 tus qauv.

Thawj qhov tsis muaj qhov txias dua thiab peb yuav siv nws yog tias qhov ruaj khov tam sim no qis dua 1.5 Amps.

Qhov thib ob yog nrog lub txias dua thiab peb yuav siv nws yog tias qhov ruaj khov tam sim no siab dua 1.5 Amps.

Kauj Ruam 4: Kev Tiv Thaiv Tam Sim No

Lwm qhov uas yuav tsum tau hais thaum ua haujlwm nrog cov qauv siv hluav taws xob zoo li hloov pauv yog tias lawv yuav hlawv tawm yog tias tam sim no mus siab dhau. Kuv ntseeg tias koj twb nkag siab tias los ntawm cov kauj ruam saum toj no, tab sis yuav tiv thaiv IC li cas los ntawm qhov siab tam sim no?

Ntawm no peb xav qhia lwm qhov tivthaiv Fuse. Hauv qhov xwm txheej tshwj xeeb no peb hloov pauv xav tau kev tiv thaiv los ntawm 2 lossis 3 Amps. Yog li peb yuav siv, cia peb hais 2 Amp fuse thiab xaim nws raws li cov duab saum toj no. Qhov no yuav muab kev tiv thaiv tsim nyog rau peb IC.

Sab Hauv Fuse muaj cov xaim nyias ua los ntawm cov khoom uas yaj rau qhov kub tsis txias, cov tuab ntawm cov hlau tau ua tib zoo kho thaum lub sijhawm tsim khoom kom thae xaim yuav tawg (lossis tsis muag) yog tias tam sim no mus saum 2 Amps. Qhov no yuav tso tseg qhov ntws tam sim no thiab qhov siab tam sim no yuav tsis tuaj yeem hloov pauv. Tau kawg qhov no txhais tau tias peb yuav tau hloov Fuse (vim tias nws tau yaj tam sim no) thiab kho qhov Circuit Court uas tau sim kos ntau dhau tam sim no.

Yog tias koj xav paub ntau ntxiv txog cov fuses thov xa mus rau peb cov ntawv qhia rau lawv thaum peb tso tawm.

Kauj Ruam 5: Hwj chim 6V Lub Cev thiab 5V Tus Kheej Los Ntawm Ib Qhov Chaw

Nov yog qhov piv txwv uas suav nrog txhua yam hais los saum no. Peb yuav suav nrog txhua yam nrog cov kauj ruam txuas:

1. Txuas 2S Li-Po (7.4V) roj teeb nrog 2A fuse. Qhov no yuav tiv thaiv peb lub hauv paus tseem ceeb ntawm qhov siab tam sim no.
2. Kho qhov hluav taws xob mus rau 6V nrog lub multimeter txuas nrog ntawm cov zis.
3. Txuas hauv av thiab VCC los ntawm lub roj teeb nrog lub hloov pauv cov khoom siv txuas.
4. Txuas cov txiaj ntsig zoo nrog VIN ntawm Arduino thiab nrog cov xaim liab ntawm micro servo SG90.
5. Txuas cov txiaj ntsig tsis zoo nrog GND ntawm Arduino thiab xaim xim av ntawm micro servo SG90.

Ntawm no peb tau hloov kho qhov hluav taws xob rau 6V thiab txhawb nqa Arduino Uno thiab SG90. Qhov laj thawj yog vim li cas peb yuav ua li ntawd es tsis txhob siv 5V tso tawm ntawm Arduino Uno kom them tus nqi SG90 yog qhov tso tawm tsis tu ncua muab los ntawm tus hloov pauv, nrog rau qhov tso tawm tam sim no los ntawm Arduino, thiab peb ib txwm xav cais lub cev muaj zog los ntawm lub zog ntawm Circuit Court. Nov yog qhov kawg uas tsis tau ua tiav vim tias nws tsis tsim nyog rau lub tshuab no, tab sis tus hloov pauv muab rau peb kom ua tau li ntawd.

Txhawm rau nkag siab ntau ntxiv txog vim li cas nws thiaj zoo dua rau lub zog cov khoom ua li no thiab cais cov motors los ntawm cov tswj tau thov xa mus rau peb cov lus qhia ntawm roj teeb thaum nws tso tawm.

Kauj Ruam 6: Hwj chim 5V thiab 3.3V Cov Khoom Los Ntawm Ib Qhov Chaw

Qhov piv txwv no qhia yuav siv LM2596 kom muaj zog ob lub cuab yeej nrog ob hom sib txawv ntawm qhov hluav taws xob. Cov thaiv tuaj yeem pom meej los ntawm cov duab. Qhov peb tau ua ntawm no yog piav qhia hauv cov theem hauv qab no.

1. Txuas lub 9V Alkaline Roj Teeb (tuaj yeem yuav hauv ib lub khw muag khoom hauv zos) mus rau qhov hloov pauv.
2. Kho qhov hluav taws xob mus rau 5V thiab txuas cov khoom tso rau hauv lub khob cij.
3. Txuas Arduino's 5V mus rau lub davhlau ya nyob twg zoo ntawm lub khob cij, thiab txuas thaj chaw ntawm Arduino thiab Breadboard.
4. Qhov cuab yeej thib ob siv ntawm no yog lub wireless xa/txais nrf24, nws yuav tsum tau 3.3V, ib txwm koj tuaj yeem siv lub zog ncaj qha los ntawm Arduino tab sis tam sim no los ntawm Arduino feem ntau tsis muaj zog kom xa xov tooj cua ruaj khov, yog li peb yuav siv peb lub hloov pauv los zog nws.
5. Txhawm rau ua qhov ntawd peb yuav tsum tau siv Voltage Divider los txo qhov hluav taws xob los ntawm 5V txog 3.3V. Qhov no yog ua tiav los ntawm kev txuas tus +5V ntawm qhov hloov pauv mus rau 2k Ohm resistor, thiab 1k Ohm resistor rau hauv av. Lub davhlau ya nyob twg qhov hluav taws xob uas lawv kov tam sim no tau txo qis rau 3.3V uas peb siv los them nqi nrf24.

Yog tias koj xav paub ntau ntxiv txog cov resistors thiab qhov faib hluav taws xob thov xa mus rau peb cov lus qhia txog qhov ntawd thaum nws tso tawm.

Kauj Ruam 7: Xaus

Peb xav los tham txog qhov peb tau qhia ntawm no.

• Siv LM2596 los hloov qhov hluav taws xob los ntawm siab (4.5 - 40) mus rau qis
• Ib txwm siv Multimeter los tshuaj xyuas qhov ntsuas hluav taws xob ntawm qhov tso tawm ua ntej txuas rau lwm yam khoom siv/qauv
• Siv LM2596 yam tsis muaj lub dab cua sov (txias dua) rau 1.5 Amps lossis qis dua, thiab nrog lub rhaub dej kub txog li 3 Amps
• Siv 2 Amp lossis 3 Amp Fuse los tiv thaiv LM2596 yog tias koj tab tom ua lub zog tsav cov duab uas tsis tuaj yeem kwv yees tau
• Siv cov hloov pauv koj tab tom muab cov hluav taws xob ruaj khov rau koj cov hluav taws xob nrog qhov tam sim no txaus uas koj tuaj yeem siv los ntseeg tau tswj lub cav, ua li no koj yuav tsis muaj tus cwj pwm txo qis nrog cov roj teeb hluav taws xob poob thaum lub sijhawm

Kauj Ruam 8: Ntxiv Cov Khoom

Koj tuaj yeem rub tawm cov qauv uas peb tau siv hauv qhov kev qhia no los ntawm peb tus lej GrabCAD:

GrabCAD Robottronic Qauv

Koj tuaj yeem pom peb lwm cov lus qhia ntawm Instructables:

Cov lus qhia Robottronic

Koj tseem tuaj yeem tshawb xyuas Youtube channel uas tseem tab tom ncaws tawm:

Youtube Robottronic