Instructions For Operation; Interface Definition; Connection Method - DFRobot SEN0521 User Manual

1.

Instructions For Operation

1.1

Interface Definition

Pin number
1
2
3
4
5
1.2

Connection Method.

Configuring module parameters
and retrieving module testing
results.
Module serial port :Tx
Module serial port reception
1.
Basic Usage.
Connect the VCC pin to the power source (DC 4.5-5.5V, typical 5V), the GND pin to the
ground, and the OUT pin to the output.
When there is movement, slight movement, or stationary targets within the effective
detection area, the OUT pin outputs a high level (5V). Otherwise, the OUT pin outputs a
low level (0V).
2.
Advanced Usage
Definition
VCC Power supply of the module; power supply range from 4.5 to 5.5V;
GND Module ground.
OUT Output signal; can output I/O digital signals or PWM control
signals.
TXD Module serial port transmission; used to configure module
operating parameters.
RXD Module serial port reception; used for configuring module
operating parameters.
:Rx
Control signal
1. Produces a target output of either OUT=1 or OUT=PWM gradually
increasing to the maximum duty cycle setting.
2. Produces a non-target output of either OUT=0 or OUT=PWM gradually
decreasing to the minimum duty cycle setting.
Explanation
When powered by 4.5~5.5V, the
ripple should be less than
50mV. When powered by 7~18V,
the ripple should be less
than 100mV.
Module power supply.
Module GND.
2