Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | SW-520D |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switch Output (DO) |
| Detection Angle | Adjustable via Potentiometer |
| Indicator | Green Power LED, Red Status LED |
| PCB Dimensions | 32mm x 14mm x 4mm |
| Mounting Hole Diameter | 3.0mm |
| Interface | 3-Pin Header (VCC, GND, OUT) |
| Application Range | Tilt Detection, Vibration Alarm, Position Sensing |
| Package Weight | 2g |
Anonymous
Mar 25, 2026
Rating: 5/5
Perfect for Arduino projects
This module works exactly as described. The sensitivity adjustment pot makes it very easy to calibrate for specific tilt angles. I used it for a balance robot project and the response time is instant.
Anonymous
Mar 22, 2026
Rating: 5/5
Easy to integrate
Plug and play with my ESP32 board. The digital output simplifies the code significantly compared to analog sensors. Highly recommend for beginners learning about motion sensing.
Anonymous
Mar 17, 2026
Rating: 4/5
Good value, clear instructions needed
The sensor itself is high quality and the gold contacts look durable. It took me a moment to figure out the optimal potentiometer setting, but once tuned, it triggers reliably. Great for the price.
Anonymous
Mar 10, 2026
Rating: 5/5
Exceeded expectations
Very sensitive and accurate. I use it to detect when a box has been moved. The adjustable threshold is a fantastic feature that many cheaper modules lack. Will buy again.
Anonymous
Mar 05, 2026
Rating: 5/5
Reliable vibration detection
I bought five of these for a security alarm system prototype. They detect even slight vibrations consistently. The LEDs are bright enough to see status at a glance without being blinding.
Anonymous
Mar 03, 2026
Rating: 4/5
Solid build quality
The PCB is well-made and the soldering points are clean. The only minor issue is that the mounting holes are slightly tight for M3 screws, but nothing a drill can't fix. Works great overall.
Q: Does this module provide an analog output signal?
A: No, the SW-520D provides a digital switch output (High/Low). It does not provide a variable analog voltage based on the angle.
Q: How do I adjust the sensitivity?
A: There is a blue potentiometer on the board. Rotate it clockwise to increase sensitivity (detect smaller tilts) or counter-clockwise to decrease it.
Q: What is the maximum current this sensor can handle?
A: This is a logic-level sensor module designed for signal detection, not for switching high-power loads. Please connect the output pin to a microcontroller or a relay driver circuit.
Q: Can I use this with a 3.3V Raspberry Pi?
A: Yes, the module operates within the 3.3V to 5V range, making it fully compatible with Raspberry Pi GPIO pins.
Q: Is the ball switch replaceable if it breaks?
A: The internal ball switch is soldered directly to the PCB. While technically replaceable with soldering skills, it is generally more cost-effective to replace the entire module.
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