Portable Luxmeter: 7 Kauj Ruam (nrog Duab)

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

Txoj haujlwm no yog hais txog kev ua kom lub tsev nqa tau yooj yim. Nws tuaj yeem siv hauv tsev kawm ntawv, qhov chaw menyuam yaus tuaj yeem ntsuas qhov sib txawv ntawm lub teeb ci.

Muaj nuj nqi:

1. ntsuas kev siv lub teeb hauv lux.

2. xam hnub ci hluav taws xob los ntawm lux rau watts/m2 (qhov tseem ceeb 112)

3. them roj teeb uas siv USB chaw nres nkoj

Tag nrho tus nqi nyob ib puag ncig 13 $ yam tsis muaj rooj plaub. Luxmeter siv 15 mA, yog li nws yuav ua haujlwm ntev ntawm ib lub roj teeb Li-Ion.

Kauj ruam 1: BOM

Txog qhov haujlwm koj xav tau cov khoom siv no (koom nrog kev sib txuas, yog tias koj xav txhawb nqa kuv):

Arduino Pro Mini 5V

Txuas

MAX44009

• Dav 0.045 Lux mus rau 188, 000 Lux Range VCC = 1.7V txog 3.6V ()
• ICC = 0.65µA Kev Ua Haujlwm Tam Sim No
• -40 ° C txog +85 ° C Kub Ntau Yam
• Txuas

OLED zaub

• Diagonal Screen Loj: 0.96"
• Tus lej Pixels: 128 x 64

• Xim Qhov tob: Monochrome (Daj & Xiav)

• Dimension: 27.8 x 27.3x 4.3 hli
• Ua hauj lwm Voltage: 3.3 ~ 5V DC
• Lub zog: 0.06W
• MaxViewing Lub:> 160 Degree
• Duty ： 1/32Brightness (cd/m2) ： 150 (Typ) @ 5V
• Kev sib txuas lus: I2C
• Txuas

TP4056

• xav tau USB rau micro USB cable rau them
• tswv yim 5V

Txuas

Li-Ion roj teeb

• 3 - 4.2V
• Txuas

Xyoo 18650

Txuas

Hloov jumper

Txuas

Kabel thiab header

• poj niam rau poj niam
• poj niam thiab txiv neej header
• Txuas mus rau cov kab
• Txuas rau tus pin headers

Kauj ruam 2: Circuit Court

Koj xav tau ntawm 5V Arduino kom muaj zog nrog Li-Ion roj teeb (4, 2 V!)

Kev Sib Txuas:

Arduino - MAX44009 (tib yam rau OLED zaub)

A4 - SDA

A5 - TSO

VCC - VIN

GND - NCO

TP4056 - Arduino Pro Mini OUT+ - VCC

Arduino - roj teeb

VCC - ntxiv rau lub davhlau ya nyob twg (max 5 V rau Arduino 5V)

Arduino - hloov jumper

GND - thawj tus hloov pauv

TP4056 - hloov lub jumper

OUT - - tus hloov thib ob

Roj teeb - hloov jumper

rho tawm davhlau ya nyob twg - thawj thiab thib ob hloov

Kauj ruam 3: Code

#suav nrog

#ncig #ncig

#suav nrog

#suav nrog "MAX44009.h"

MAX44009 Lux (0x4A);

ntab lux; ntab watts; // OLED display TWI address #define OLED_ADDR 0x3C Adafruit_SSD1306 zaub (-1); // rov pib dua cov zaub nrog rov pib khawm ntawm arduino tsis muaj teeb tsa teeb tsa () {Lux. Begin (0, 188000); display.begin (SSD1306_SWITCHCAPVCC, OLED_ADDR); display.clearDisplay (); display.display (); // tso saib ib kab ntawm cov ntawv nyeem display.setTextSize (1); display.setTextColor (WHITE); display.setFont (& FreeSerif9pt7b); display.setCursor (1, 15); display.print ("MAX44009"); display.display (); } void loop () {lux = Lux. GetLux (); // tau luxs watts = Lux. GetWpm (); // tau txais watts/m2, tsuas yog rau SUN qhov chaw display.fillRect (1, 20, 100, 100, BLACK); // tsim cov duab plaub dub ntawm qhov tseem ceeb txoj haujlwm display.setCursor (1, 40); display.print (lux); display.setCursor (80, 40); display.print ("lux"); display.setCursor (1, 60); display.print (watts); display.setCursor (80, 60); display.print ("W/m"); display.setCursor (115, 55); display.print ("2"); display.display (); ncua (1000); }

Kauj ruam 4: Solder

Kuv tsim ntawm lub rooj tsav xwm tsab ntawv rau Arduino Pro Mini thiab tus pin rau txuas lwm yam. Kuv kuj tsim cov ntaub ntawv yooj yim los ntawm plywood. Siv Yas Zip Cable Hlau rau kev teeb tsa tso rau lub qhov rooj, nrog rau cov pob qij txha.

Kauj ruam 5: Them

Kuv nce tus nqi them nqi - TP4056 rau luxmeter. Lub teeb liab qhia pom them, lub teeb xiav tsis txuas usb cable (micro usb). Nrog hloov jumper, Kuv tuaj yeem hloov rau/tawm them.

Kauj Ruam 6: Txoj Kev Kawm Zaj Lus Qhia

1. Xib fwb piav txog dab tsi yog luxs, watts thiab piav qhia yuav ua haujlwm nrog luxmeter li cas.

2. Cov tub ntxhais kawm yuav muaj haujlwm, txhawm rau ntsuas qhov zoo:

a, xaiv lub teeb pom kev, thiab ntsuas qhov deb ntawm qhov chaw siv qhov ntsuas qhov ntev

b, ntsuas kev siv lub teeb ci

c, sau txhua qhov tseem ceeb rau lub rooj.

Kauj Ruam 7: Kev Ntsuas Tus Kheej

1. Txoj kev teeb muab 5 - 25 lux, tej zaum yog nyob ntawm qhov siab ntawm lub teeb ci.
2. Lub hnub ci muab 80 000 - 100 000 lux, nyob ntawm lub kaum sab xis ntawm lub teeb pom kev thiab lub hnub ci.
3. Tshav hauv qab huab thaum hnub tshav ntuj 15 000 lux
4. LCD saib kuv muab 78 lux (0 cm nrug), 63 lux (10 cm), 50 lux (20cm)
5. smartphone 60 lux (0 cm)
6. sab hauv chav thaum hnub tshav ntuj pom qhov muag tsis pom 60 lux

Txog kev suav Watts/m2, koj yuav tsum paub lub teeb pom kev zoo (hauv lumens ib watt).

Txog Hnub Ci nws nyob ib puag ncig 110 lumens/W (ntawm lub dav hlau dav dav), 96 lumens/W (ntawm lub hnub ncaj kab teeb).

Yog li rau Hnub Kuv tau txais ncaj qha 700 - 900 W/m2 siv.

Lux rau watt/m2 lub laij lej