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ocrobot:alpha:bh1750:index [2017/04/07 10:03] – 外部编辑 127.0.0.1 | ocrobot:alpha:bh1750:index [2023/06/07 04:23] (当前版本) – 外部编辑 127.0.0.1 | ||
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+ | ===== ALPHA BH1750FVI ===== | ||
+ | ==== 简介 ==== | ||
+ | BH1750FVI 是一种I2C总线接口的数字型光强度传感器。它可以根据收集的光线强度数据来控制其他执行装置。分辨率有16位(1lx-65535lx)。 | ||
+ | ==== 特点 ==== | ||
+ | - IIC总线接口 | ||
+ | - 响应光谱为人眼可见光谱 | ||
+ | - 1 - 65535lx宽范围响应。 | ||
+ | |||
+ | ==== 勒克斯 ==== | ||
+ | 勒克司(lux,法定符号lx)是照度的单位。等于1流明的光通量均匀照在1平方米表面上所产生的照度。 | ||
+ | |||
+ | ====参考图片==== | ||
+ | {{: | ||
+ | {{: | ||
+ | ==== 代码 ==== | ||
+ | <code cpp> | ||
+ | #include < | ||
+ | |||
+ | #define ADDR 0b0100011 | ||
+ | |||
+ | void setup() { | ||
+ | // put your setup code here, to run once: | ||
+ | Serial.begin(9600); | ||
+ | Wire.begin(); | ||
+ | Wire.beginTransmission(ADDR); | ||
+ | Wire.write(0b00000001); | ||
+ | Wire.endTransmission(); | ||
+ | |||
+ | } | ||
+ | |||
+ | void loop() { | ||
+ | // put your main code here, to run repeatedly: | ||
+ | int val = 0; | ||
+ | |||
+ | // reset | ||
+ | Wire.beginTransmission(ADDR); | ||
+ | Wire.write(0b00000111); | ||
+ | Wire.endTransmission(); | ||
+ | |||
+ | delay(100); | ||
+ | |||
+ | |||
+ | |||
+ | Wire.beginTransmission(ADDR); | ||
+ | Wire.write(0b00100000); | ||
+ | Wire.endTransmission(); | ||
+ | |||
+ | // typical read delay 120ms | ||
+ | delay(120); | ||
+ | |||
+ | Wire.requestFrom(ADDR, | ||
+ | |||
+ | for (val=0; Wire.available()> | ||
+ | char c = Wire.read(); | ||
+ | // | ||
+ | val = (val << 8) + (c & 0xFF); | ||
+ | } | ||
+ | |||
+ | val = val / 1.2; | ||
+ | Serial.print(" | ||
+ | Serial.println(val); | ||
+ | |||
+ | Serial.println(" | ||
+ | digitalWrite(13, | ||
+ | delay(100); | ||
+ | } | ||
+ | </ | ||
+ | ==== 下载 ==== | ||
+ | **数据手册:** | ||
+ | |||
+ | {{: | ||
+ | |||
+ | **原理图:** | ||
+ | |||
+ | {{: | ||