Weeemake WM0A Users Manual
Bluetooth manual
1．Summary
The Bluetooth module is a commutative wireless communication module designed by our
company for DIY pr oducts. It can be used on the main control boar d such as ELF and ELF
MINI, which is easy to use and easy to use.
2．Characteristics
*Follow the BT4.1 Bluetoo t h spec i f icat i on to support Bluetooth low pow er consumption.
*UART Interface
*Support air upgrade (OTA) firmware to solve customer's worries
*The module comes with serial pin, ROHS process
*Built-in 2.4G PCB antenna, users do not need antenna debugging
*High performance wireless transceiver system, in the open area, the distance can reach
20~30 meters.
*With Anti plug protection
3. Application
The module is mainly used for short distance data wireless transmission, and it can be
easily connected to Bluetooth devices such as PC, smart phones and other wireless
terminals, so that it can co nt r ol small cars or DIY devices through PC or smart phone.
First, the Bluetooth module is installed on the corresponding area of the main control
panel. When the Bluetooth module is energized, the blue LED of Bluetooth module
indicator lamp will blink. When the device connection is successful, the blue LED of
Bluetooth module lamp will always shine.
4. Physical and Electrical Properties
Left
1
RXD
I/O
Serial Input 5V
2
TXD
I/O
Serial Output 5V
3
Reset
I
Reset pin
Below
1
5V
Power
5V Power
2
NC
NC
NC 3 GND
Power
GND
Right
1
NC
NC
NC 2 GPIO
I/O
I/O 3 DTR
O
DTR
Operating F requency Band 2.4GHz-2.48GHz unlicensed ISM ba nd
Bluetooth Specification BT4.1(Bluetooth Low Energy)
Operating Voltage
4.5V—5.5V
Main Digital Interface UART
Storage Temperature
Operating Temperature
-40℃—+85℃
-20℃—+70℃
Dimension 25.7mm(L) x 20.8mm (W) x 3.5mm(H)
5. PIN Foot Definition
Pin.No Name Type Description
FCC warning:
Any Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions : (1) This device may no t cause harmful in terference, an d(2)
this device must accept any interference received,Including interference that may cause undesired operation
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