Gravity Analog Piezo Disk Vibration Sensor

The piezo vibration sensor from DFRobot consists of a piezo disc on a cable and a small board. When deformed, the disc generates a voltage that rises with the strength of the vibration. Unlike the digital vibration sensor, which only reports an event, this sensor also indicates the strength. The output is analogue, even though DFRobot calls the module «Digital Piezo Disk Vibration Sensor».

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Dupont Cables M-M 10cm 20 Pieces
• Gravity IO Expansion Shield for Arduino V7.1
• Gravity 16Bit 4-Channel ADC Analog Digital Converter I2C ADS1115

Features:

• Piezo disc on a cable, connected to the board with a screw terminal
• Output voltage rises with the strength of the vibration
• According to DFRobot the module needs no separate supply, current below 1 mA
• On the Raspberry Pi only readable via an ADC such as the ADS1115, as the Raspberry Pi has no analogue inputs
• Gravity PH2.0 3-pin connector, marked A for analogue
• 2 mounting holes 3 mm

Application Examples:

• Monitoring vibrations on machines
• Detecting and comparing knocks and impacts
• Picking up vibrations on musical instruments

Documentation:

• Wiki DFRobot DFR0052
• Example code for Arduino (DFRobot wiki)
• Schematic (PDF)
• Datasheet (PDF)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0052
• Sensor: piezo disc
• Interface: analogue
• Supply voltage: 3.3 V to 5 V
• Current consumption: below 1 mA
• Connector: Gravity PH2.0 3-pin (signal, VCC, GND)
• Dimensions: 22 × 30 × 14 mm
• Weight: 10 g (DFRobot)

Scope of Delivery:

• 1× Gravity piezo vibration sensor with piezo disc
• 1× Gravity analogue sensor cable 3-pin, PH2.0 to Dupont socket, 30 cm