Hardware Reference
In-Depth Information
Figure 3-9.
FLORA 9 degrees of freedom sensor
FLORA Light Sensor
Add light-reactive sensing to your wearable FLORA project with
this high-precision lux sensor (see
Figure 3-10
). It's based on the
TSL2561 digital luminosity sensor, ideal for use in a wide range
of light situations. This sensor can detect full-spectrum light as
well as infrared separately, so you can choose to include or
exclude infrared wavelengths in your project. With the light sen-
sor, you can make a wearable project that reacts to changes in
light, such as a sunset, stepping inside from out, or having your
photo taken with a flash.
The sensor has a digital (I2C) interface. Just like with the other
FLORA sensors, you can connect only one lux sensor to your
FLORA, but you can connect other I2C sensors/outputs by
using the set of SCL/SDA pins on the opposite side. The current
draw is extremely low: about 0.5 mA when actively sensing, and
less than 15 uA when in powerdown mode.
Dimensions
: 14 mm/.55
″
diameter × 1.8 mm/.07
″
thick
