Best Modules BCM-68F2123-X02 User manual

https://www.bestmodulescorp.com
Quick Start Guide
Name: Parallel type 433MHz RF transmitting module
Model: BCM-68F2123-X02
1.After powering on, if the power indicator LED
remains off, users should check the battery
condition and the power switch.
2.After pressing any of the on-board keys, if
the RF signal transmitting indicator LED
remains off, users should check the module
installation.
3.If problems are unable to be resolved using
the above methods, consult the “Technical
Support” on the Best Module Official Website.
14
Easy Trouble Shooting
15
Specification
• Size (L ×W ×H): 20 ×25 ×10 (mm) , without
antenna and pin header
• Weight: 2.8 grams, without antenna and pin
header
• Operating voltage: 2.2V~3.6V
• RF frequency: 433.92 MHz
• Transmitting power: 10dBm (10mW)
• Operating temperature: -40 ℃~ +85℃
Functional Description
5
1.The product operating frequency is 433.92MHz.
2.As the Master MCU, a BC68F2123, includes the
required program, user programming is not
necessary.
3.Refer to “Appendix 2: HT OOK demo board
package format” for detailed information about the
RF transmission package content.
Product Description
4
This product uses a custom transmitting signal protocol
and should therefore be used together with the
following module products:
•Evaluation board: BCE-GENTX-X01
•Parallel type 433MHz RF receiving module: BCM-
68F2420-C01
•Serial type 433MHz RF receiving module: BCM-2401-
C03
The above products need to be purchased separately,
refer to the “Appendix 1: Product System Diagram”.
•Spring antenna
•BC68F2123
•Pin header
1
2
3
2
Component Description and
Layout
12
Block Diagram
6
Solder the antenna and
pin header first
Note: The antenna must be
placed vertically and kept away
from metallic objects.
9
Switch on the power
The power indicator LED2 will illuminate.
13
Circuit Schematic
8
Insert battery
1
Accessory List
1.Parallel type RF wireless receiving module
- BCM-68F2123-X02 ×1
2. Spring antenna - 433.92MHz Antenna ×1
3. 90° pin header with 12 pins ×1
Pin Order
3
7
Insert the module into the socket
on the evaluation board, which
needs to be purchased separately.
Note: For this operation the power
should be off.
•
1
•
2
•
3
1
12
Pin #
Pin Name
Description
1
GND
GND
2
VDD
VDD
3
VDDRF
VDDRF
4
OCDSDA
PA0
5
OCDSCK
PA2
6
TX_LED
PB1
7
KEY1
PA1
8
KEY2
PA5
9
KEY3
PA6
10
KEY4
PA7
11
Reserved1
PB0
12
Reserved2
PB5
on
10
Signal Transmission and Indication
Pressing any key on the evaluation board will
transmit the corresponding RF signal, the signal
transmitting indicator LED1 will illuminate. The
RF wireless transmitting board will transmit the
corresponding data packet more than twice each
time the key is pressed. Releasing the key will
stop transmission and the LED1 will be off.
Note: The key should be pressed and held for at least 40ms to avoid the
system ignoring the key press action.
11
Power Down Mode
The signal transmission will stop and the LED
indicator will be off after the key is released, the
product will then enter the power down mode
automatically.

https://www.bestmodulescorp.com
Quick Start Guide
Name: Parallel type 433MHz RF transmitting module
Model: BCM-68F2123-X02
17
Appendix 2: HT OOK demo board package format
End code is used to separate the sequent two code words.
C. End code: 2λhigh + 2λlow
Leading code: Repeating 1λhigh and 1λlow for 8 times.
A. Leading Code + Start code
Start code: 4λhigh + 2λlow
Each bit is composed with 4 symbols. The format for bit “0” and “1” are shown below:
Bit “0” →1λhigh + 3 λlow
B. Address, data & CRC
2λ
2λ
1λ
1λ
4λ
2λ
1λ
3λ
1λ
3λ
For TX demo boards / remote controllers, their addresses are pre-programmed in the MCU program
ROM. Users do not need to specify the address.
For RX demo boards, they have to be paired with a TX first before being used. The paring process
allows the RX recognize the TX and memorize TX’s address in its non-volatile memory.
CRC=X^8+X^5+X^4+1 ,
Below shows the data when K1~K4 is pressed down
Bit “1” : 3λhigh + 1λlow
The total length for a code word is 200us x (16+6+96+32+32+4) = 37.2ms
The “code word” is a group of code bits used in OOK wireless communication.
This document describes the code word format used in HT OOK demo boards.
A code word consists of leading code, start code, address, data, CRC and end code.
Each fields are composed with several symbols. The symbol rate is set as 5Kbps.
Each symbol (λ) in table below is 200us.
D7
D6
D5
D4
D3
D2
D1
D0
K1
0
0
0
0
0
0
0
1
K2
0
0
0
0
0
0
1
0
K3
0
0
0
0
0
1
0
0
K4
0
0
0
0
1
0
0
0
Leading
Start
Address
Data
CRC
END
length
16λ
6λ
4λ/bit*24bit
4λ/bit*8bit
4λ/bit x 8bit
4λ
The code word format is like:
16
Appendix 1: Product System Diagram
This product should be used together with the
evaluation board, the BCE-GENTX-X01:
433.92MHz
BCE-GENTX-X01
Socket
BCM-68F2130-X02
BC68F2130
BCM-2102-X03
BC68F0031
BC2102
BCM-68F2123-X02
BC68F2123
4-key
I²C/ UART
B
A
D
C
BCR-68F2130-X01
B
A
D
C
BCR-68F2123-X01
BCE-GENRX-X01
Socket
BCM-68F2420-C01
BC68F2420
BCM-2401-C03
BC68F0031
BC2401
9-Direct output
I²C/ UART
Hyper link BC68F0031 BC68F2123 BC68F2130 BC68F2420 BC2401 BC2102