RAK12015 WisBlock Vibration Detection Sensor Module Datasheet

Overview

Description

The RAK12015, a part of WisBlock Sensor, is a Vibration Detection Module that uses a high-precision sensor, the ANT-801S. This sensor is capable of detecting micro shocks or vibration without direction limits.

Features

• Vibration Detection
• 3.3 V Power Supply
• Chipset: ANT-801S
• Module Size: 15 mm x 25 mm

Specifications

Overview

Mounting

The RAK12015 WisBlock Vibration Detection Sensor Module can be mounted to the IO slot of the WisBlock Base board. Figure 1 shows the mounting mechanism of the RAK12015 on a WisBlock Base module.

Figure 1: RAK12015 WisBlock Vibration Detection Module Mounting

The sensor (ANT-801S) can be taken out of PCB by connector (J2 on PCB of RAK12015), so that the user can position the sensor outside of Wisblock to measure vibrations.

Hardware

The hardware specification is categorized into five (5) parts. It shows the chipset of the module and discusses the pinouts and their corresponding functions and diagrams. It also covers the electrical and mechanical parameters that include the tabular data of the functionalities and standard values of the RAK12015 WisBlock Vibration Detection Sensor Module.

Chipset

Vendor	Part number
	ANT-801S

Pin Definition

The RAK12015 WisBlock Vibration Detection Sensor Module comprises a standard WisBlock connector. The WisBlock connector allows the RAK12015 module to be mounted to a WisBlock Base board. The pin order of the connector and the pinout definition is shown in Figure 2.

​

Figure 1: RAK12015 WisBlock Vibration Detection Module Pinout

NOTE

• The 3V3_S, AIN1, and GND are connected to WisConnector.
• 3V3_S voltage output from the WisBlock Base that powers the RAK12015 module can be controlled by the WisBlock Core via WB_IO2 (WisBlock IO2 pin). This makes the module ideal for low-power IoT projects since the WisBlock Core can totally disconnect the power of the RAK12015 module.

Electrical Characteristics

Parameter	Minimum	Normal	Maximum	Unit
3V3_S	-	3.3	-	V
AIN1	0	-	2	V

Mechanical Characteristics

Board Dimensions

Figure 3 shows the dimensions and the mechanical drawing of the RAK12015 module.

Figure 1: RAK12015 WisBlock Vibration Detection Module Mechanical Drawing

WisConnector PCB Layout

Figure 1: WisConnector PCB Footprint and Recommendations

Schematic Diagram

When there is no vibration detected, the AIN1 will be low. And when vibration occurs, AIN1 will produce a square wave. The voltage level of the square wave depends on the value of R1.

The frequency of the square wave output depends on the vibrations received by the sensor. The sensor output is directly connected to the AN1 pin of the WisBlock Core.

There are optional components (R3 and U1) that are not mounted in the PCB but can be used to do signal conditioning. The output of this optional circuit is connected to IO4 of the WisBlock Core.

Figure 1: Schematic of RAK12015 Module