Technical Details:
- Model: SW-520D
- Max Current : 20mA
- Max voltage : 12V
- Conductive time : 2ms
- Closed resistance :< 10M ohm
- Open resistance : > 10M ohm
- Material: Metal, PVC
- SW-520D is roll ball type tilt switch
Pin Description:
- VCC: 3-5V DC
- GND: min/ground/gnd
- DO: digital output
Features:
- The use of highly sensitive angle switch SW-520D as a sensor
- The comparator output signal clean, good waveform, driving ability, than 15mA
- The working voltage 5V
- The output format: Digital switching output (0 and 1)
- A fixed bolt hole for easy installation
- Small PCB board size: 3.2cm x 1.4cm
- Using a wide voltage comparator LM393
Recent technological advancements in the manufacturing of tilt sensors have improved accuracy, reduced cost, and increased lifetime. The type SW-520D is a commonly available roller-ball type tilt sensor consists of two conductive elements (poles) and a conductive free mass (rolling ball), encapsulated in the same case. When the tilt sensor is oriented so that that end is downwards, the mass rolls onto the poles and shorts them, acting as a switch stroke. Microcontroller-compatible tilt sensor modules based on SW-520D are also available at affordable costs.
Electronics circuitry behind this tiny module is usually centered around the dual- comparator chip LM393. The module features a tilt sensor, a signal amplifier, a standard 4-pin header, a power indicator that signals that the module is correctly powered, and a status indicator that lights up when a tilt is detected by the tilt sensor.
