RCWL-0516 Microwave Radar Sensor Module Body Induction Module
Rp11,000
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Description
Description
| Weight | 350 g |
|---|---|
| SKU | 84195ade9217 |
| Category | Komponen Electronic |
SKU : A11033
It’s intended for lamps and wall lights, where it can turn them on when motion is detected, and turn them off after a short timeout. Short-range (~~5m) radar modules such as this one are an alternative to PIR (passive infra-red) modules. Despite it being a very wide-spread and cheap module, documentation is scarce.
DETAILS
The module’s pinout seems to be:
3V3 – module power supply
GND – common ground
OUT – outgoing light voltage
IN – incoming light voltage
CDS – light detect / module disable feature
As far as I can currently tell, it works something like this: if the CDS is not pulled low, the module will send out pulses and measure their return times. If a change in return times is detected (i.e. something in the path of the radio waves has changed position), it will connect the IN and OUT lines (most likely with a MOSFET). So if there’s a light connected to the OUT line, and an external power source (4V – 28V) is connected to IN, it will light up. The OUT line will go low after a short period of time (a few seconds) if movement stops. Of course, GND lines must be connected together.