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| − | == Schematic ==
| + | #redirect [[Light sensor]] |
| − | <gallery>
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| − | File:Photoresistor Light-Sensitive Module.png| CdS 5528 photocell schematic breakout
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| − | File:GY2561_sch.JPG | TSL2561 schematic
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| − | </gallery>
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| − | === Arduino Demo Code BH1750 ===
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| − | * See pin difinition on left image
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| − | [[File:Specification GY30.jpg|thumbnail]]
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| − | <syntaxhighlight lang="Arduino">
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| − | #include <Wire.h> //IIC
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| − | #include <math.h> | |
| − | | |
| − | int BH1750address = 0x23;
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| − | byte buff[2];
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| − | | |
| − | void setup()
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| − | {
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| − | Wire.begin();
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| − | Serial.begin(9600);
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| − | }
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| − | | |
| − | void loop()
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| − | | |
| − | {
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| − | int i;
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| − | uint16_t val=0;
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| − | BH1750_Init(BH1750address);
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| − | delay(200);
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| − | | |
| − | if(2==BH1750_Read(BH1750address))
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| − | {
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| − | val=((buff[0]<<8)|buff[1])/1.2;
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| − | Serial.print(val,DEC);
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| − | Serial.println("[lx]");
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| − | }
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| − | delay(150);
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| − | }
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| − | | |
| − | | |
| − | int BH1750_Read(int address) //
| |
| − | {
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| − | int i=0;
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| − | Wire.beginTransmission(address);
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| − | Wire.requestFrom(address, 2);
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| − | while(Wire.available()) //
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| − | {
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| − | buff[i] = Wire.receive(); // receive one byte
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| − | i++;
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| − | }
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| − | Wire.endTransmission();
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| − | return i;
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| − | }
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| − | | |
| − | void BH1750_Init(int address)
| |
| − | {
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| − | Wire.beginTransmission(address);
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| − | Wire.send(0x10);//1lx reolution 120ms
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| − | Wire.endTransmission();
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| − | }
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| − | </syntaxhighlight>
| |
| − | | |
| − | == Guide ==
| |
| − | * Ambient light sensor
| |
| − | {| class="wikitable sortable"
| |
| − | |-
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| − | ! Header text !! Resolution !! ADC !! output
| |
| − | |-
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| − | | BH1750 || 1 - 65535 lx || 16 bit || digital
| |
| − | |-
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| − | | TSL2561 || 0.1 - 40,000+ || 16 bit || digital
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| − | |-
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| − | | TEMT6000 || - || - ||
| |
| − | |-
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| − | | CdS cell 5528 || - || -
| |
| − | |}
| |
| − | == Documents ==
| |
| − | BH1750
| |
| − | * [http://www.youtube.com/watch?v=Iv0oTxw-L3c BH1750 demo video]
| |
| − | * [[File:Bh1750fvi-e.pdf]] - BH1750 Datasheet
| |
| − | * [[:File:BH1750_demo_code.zip|BH1750 demo code]]
| |
| − | TSL2561
| |
| − | * [[:File:TSL2561.pdf| TSL2561 datasheet]]
| |
| − | * [[:File:Arduino_tsl2561.zip|TSL2561 arduino demo code]]
| |
| − | * [https://github.com/sparkfun/SparkFun_TSL2561_Arduino_Library/tree/V_1.1.0 TSL2561 github library]
| |
| − | 5528
| |
| − | * [[:File:SEN-09088-datasheet.pdf|5528 Photoresistive Sensor]]
| |
| − | | |
| − | | |
| − | [[category:Sound, light, etc]]
| |
