VIBRO MOTOR 2 CLICK
PID: MIKROE-3713
Weight: 19 g
Vibro Motor 2 Click features a compact size Eccentric Rotating Mass (ERM) motor, labeled
as Z4FC1B1301781 as well as DMG3420U MOSFET to drive the ERM motor, since the MCU itself
cannot provide enough power for the motor driving. This type of motor is often used for haptic
feedback on many small handheld devices, such as the cellphones, pagers, RFID scanners and
similar devices. This motor contains a small eccentric weight on its rotor, so while rotating it also
produces vibration effect. This kind of motors is sometimes referred to as coin motors, due to its
shape.
Besides the vibration motor, the click is also equipped with the DMG3420U, a small MOSFET, which
is used to drive the motor. The Vibro Motor 2 click is an ideal solution for adding a simple, one pin
driven haptic feedback on any design.
This type of motor is often used for haptic feedback on many small handheld devices,
such as the cellphones, pagers, RFID scanners and similar devices. This motor
contains a small eccentric weight on its rotor, so while rotating it also produces vibration
effect. This kind of motors is sometimes referred to as coin motors, due to its shape.
Besides the vibration motor, the click is also equipped with the DMG3420U, a small
MOSFET, which is used to drive the motor. The Vibro Motor 2 click is an ideal solution
for adding a simple, one pin driven haptic feedback on any design.
HOW DOES IT WORK?
Vibro Motor 2 click features a compact size Eccentric Rotating Mass (ERM) motor,
labeled as Z4FC1B1301781. The click uses the DMG3420U MOSFET to drive
the ERM motor, since the MCU itself cannot provide enough power for the motor
driving. The circuit also contains a protection diode, which is used to protect the
transistor from the reverse voltage, since the motor represents an inductive load and
turning off its current can produce a kickback voltage that can damage the transistor.
The gate of the MOSFET is driven by the PWM signal, routed through the PWM pin of
the mikroBUS™. The PWM signal toggles the gate of the MOSFET with the pulses of a
certain width. As a result, the current through the motor is varied depending on the
pulse width of the PWM signal, which directly affects the speed of the motor, effectively
controlling the vibration force that way. The small, eccentric weight attached to the rotor
of the coin motor, generates the centrifugal force while it rotates, which in turn results
with the wobbling effect of the motor itself. The faster the rotation is, the bigger the force
gets. Controlling the motor speed allows for the vibration intensity to be controlled.
MikroElektronika library contains functions that are used to easily drive the motor by
changing the PWM pulse width, saving time for the application firmware development.
SPECIFICATIONS
Type
Haptic
Applications
An ideal solution for adding a simple, one pin driven haptic
feedback on any design.
On-board
modules
Z4FC1B1301781, cylindrical core SMT Motor from Jinlong
Machinery & Electronics
Key Features
Low power consumption, compact size
Interface
PWM
Click board size
M (42.9 x 25.4 mm)
Input Voltage
3.3V
PINOUT DIAGRAM
This table shows how the pinout on Vibro Motor 2 click corresponds to the pinout on the
mikroBUS™ socket (the latter shown in the two middle columns).
Notes
Pin
Pin
NC
1
AN
PWM
16
PWM
NC
2
RST
INT
15
NC
NC
3
CS
RX
14
NC
NC
4
SCK
TX
13
NC
Notes
Motor speed control
NC
5
MISO
SCL
12
NC
NC
6
MOSI
SDA
11
NC
Power Supply
3.3V
7
3.3V
5V
10
NC
Ground
GND
8
GND
GND
9
GND
Ground
ONBOARD SETTINGS AND INDICATORS
Label
Name
Default
Description
M1
Vibro motor
-
Vibration motor
PWR
Power LED
-
Power LED indicator
VIBRO MOTOR 2 CLICK ELECTRICAL SPECIFICATIONS
Description
Min
Typ
Max
Unit
Rated ERM motor speed
7500
10000
12500
RPM
50
dB
+70
°C
Mechanical noise
Operating Temperature
-20
SOFTWARE SUPPORT
We provide a library for the Vibro Motor 2 click on our LibStock page, as well as a demo
application (example), developed using MikroElektronika compilers. The demo can run
on all the main MikroElektronika development boards.
Library Description
This library helps user to define the all necessary GPIOs to control vibro motor. For
Vibro Motor 2 Click board user only needs PWM pin on MIKROBUS. For more details
check documentation.
Key functions:
void vm2_gpioDriverInit( T_VM2_P gpioObj ); - This function initializes GPIO driver.
Examples description
The application is composed of three sections :
System Initialization - Initializes peripherals and pins.
Application Initialization - Initializes GPIO driver and PWM. Configures PWM to 20kHz frequency,
calculates maximum duty ratio and starts PWM with duty ratio value 0.
Application Task - (code snippet) - Allows user to enter desired command to control Vibro Motor 2
Click board. The command can be entered from the serial port. The possible commands are :
characters from '1' to '9' to set duty ratio step (step = character * 5)
character '0' to set duty ratio step on value 100
character '+' to increment current duty ratio by selected step
character '-' to decrement current duty ratio by selected step
characters 'e' and 'E' to start Vibro Motor 2
characters 'd' and 'D' to stop Vibro Motor 2
characters 's' and 'S' to check Vibro Motor 2 (PWM) status
void applicationTask()
{
rx_dat = UART_Rdy_Ptr();
if (rx_dat != _RX_NOT_READY)
{
rx_dat = UART_Rd_Ptr();
checkRx();
}
}
Additional Functions :
checkRx - Executes the command (entered by user) processing.
The full application code, and ready to use projects can be found on our LibStock page.
Other mikroE Libraries used in the example:
Conversions
C_String
PWM
UART
Additional notes and informations
Depending on the development board you are using, you may need USB UART
click, USB UART 2 click or RS232 click to connect to your PC, for development systems
with no UART to USB interface available on the board. The terminal available in all
MikroElektronika compilers, or any other terminal application of your choice, can be
used to read the message.
MIKROSDK
This Click board™ is supported with mikroSDK - MikroElektronika Software
Development Kit. To ensure proper operation of mikroSDK compliant Click board™
demo applications, mikroSDK should be downloaded from the LibStock and installed for
the compiler you are using.
For more information about mikroSDK, visit the official page.
https://www.mikroe.com/vibro‐motor‐2‐click/8‐29‐19
