TXT
Smart Home
ROBOTICS
16
Robotics Sensor Station IoT
Light with brightness sensor
The first model you built according the
assembly instructions, serves to control an
outdoor light depending on the ambient
brightness.
To program this, use programming level 1
for your first program.
Photo Resistor
Use a photo resistor for the sensor.
A photo resistor is an electronic component, whose electrical resistance
changes when it is exposed to light. In many descriptions you will also
find the designation LDR. This is an abbreviation for “Light Dependent
Resistor”.
LED
Use an LED light as an actuator.
An LED is an electronic component, which converts electrical energy to
light. The abbreviation LED stands for “Light Emitting Diode”.
Important: The photo resistor has a
resistance value
of 0 – 5000 Ohms.
The interface display indicates a value of 0 at full brightness and 15 000
in complete darkness. For your project it will be necessary for you to
experiment a little bit with the figures and intermediate values.
ft building block
Photo resistor
Circuit symbol
ft building block
LED
A
K
Circuit symbol