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โมดูลวัดค่าแสง ความสว่าง ใช้ I2C bus เหมาะกับงานด้าน industrial ด้วยกระแสทำงานเพียงแค่ 1uA ซึ่งเครมว่าต่ำที่สุดในบรรดาตัววัดแสงทั้งหมด ให้ความละเอียดสูง วัดได้ตั้งแต่ 0.045 lux ถึง 188,000 lux
วิธีการต่อ MAX44009 กับ Arduino UNO Arduino UNO - MAX44009 5v - VCC GND - GND SCL - A5 SDA - A4  ตัวอย่าง Code MAX44009 กับ Arduino UNO แบบไม่ใช้ library #include<Wire.h> #define Addr 0x4A void setup() { Wire.begin(); // Initialise serial communication Serial.begin(9600); Wire.beginTransmission(Addr); Wire.write(0x02); Wire.write(0x40); Wire.endTransmission(); delay(300); } void loop() { unsigned int data[2]; Wire.beginTransmission(Addr); Wire.write(0x03); Wire.endTransmission(); // Request 2 bytes of data Wire.requestFrom(Addr, 2); // Read 2 bytes of data luminance msb, luminance lsb if (Wire.available() == 2) { data[0] = Wire.read(); data[1] = Wire.read(); } // Convert the data to lux int exponent = (data[0] & 0xF0) >> 4; int mantissa = ((data[0] & 0x0F) << 4) | (data[1] & 0x0F); float luminance = pow(2, exponent) * mantissa * 0.045; Serial.print("Ambient Light luminance :"); Serial.print(luminance); Serial.println(" lux"); delay(500); } Datasheet MAX44009 Product Description The MAX44009 ambient light sensor features an I2C digital output that is ideal for a number of portable applications such as smartphones, notebooks, and industrial sensors. At less than 1μA operating current, it is the lowest power ambient light sensor in the industry and features an ultra-wide 22-bit dynamic range from 0.045 lux to 188,000 lux.
Low-light operation allows easy operation in dark-glass applications.
The on-chip photodiode's spectral response is optimized to mimic the human eye's perception of ambient light and incorporates IR and UV blocking capability. The adaptive gain block automatically selects the correct lux range to optimize the counts/lux.
The IC is designed to operate from a 1.7V to 3.6V supply voltage range and consumes only 0.65μA in full operation. It is available in a small, 2mm x 2mm x 0.6mm UTDFN-Opto package.
Specification
Wide 0.045 Lux to 188,000 Lux Range
Small, 2mm x 2mm x 0.6mm UTDFN-Opto
VCC = 1.7V to 3.6V
ICC = 0.65μA Operating Current
-40°C to +85°C Temperature Range
Device Address Options
1001 010x and 1001 011x
PCB size:(L*W)1.32*1.05cm/0.52"*0.41"   |
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Exchange or return policy
Every item comes with a 30-day warranty. However, there are certain conditions that apply:
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The customer should not be responsible for any self-inflicted damage, such as incorrect power connections (for example, supplying 5V instead of the required 3.3V for a sensor).
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The product must be in perfect condition, without any breakage or damage caused by electricity (e.g., short circuits leading to electrical fires).
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The store does not accept product exchanges due to customer misunderstandings, such as purchasing the wrong size for their project or buying something without eventually using it. Customers can inquire about the product details and ensure compatibility before making a purchase by contacting us through our Line account @modulemore during business hours. Please note that there may be delays in response between 12:00 PM and 2:00 PM.
Return Policy: To initiate a product return, customers must provide the original receipt or a copy for quick verification. Returns can be sent to our store address by following these guidelines:
- Provide a detailed description of the damaged item(s).
- Mention any tests or experiments conducted by the customer.
Please note that the store reserves the right to make the final decision regarding product replacement or refund.
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Arduino compatible board, Iot, ESP32, ESP8266, Nodemcu, Raspberry pi, micro:bit and etc.
Mobile number : 0831710868
E-mail : paheyisoicus@gmail.com
E-mail : paheyisoicus@gmail.com
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