The BMC23M041 is a RF receiver module with frequency 433.92MHz that is composed of the Sub-1GHz OOK receiver module, BM2302-94-1, and a breakout board.
The BMC23M041 has the same functions as the BM2302-94-1. The difference between them is that the BMC23M041 includes level shift circuit and a LDO IC HT7533 and breaks out the BM2302-94-1’s pins to match BMCOM connectors. The product supports I2C and UART interfaces. You can use the jumper to select it.
With the BMCOM, you can directly connect the product to BMduino development boards, such as BM53A367A.
You can use the product with other development boards, such as Arduino UNO, as well.
It is recommended to use with the RF transmitter module, BMC21M041, to form a complete transmit and receive function.
| Pin | Name | Function |
|---|---|---|
| 1 | STATUS | Received data: output low
Otherwise, output high |
| 2 | SCL
RX |
I2C: clock line
UART: RX |
| 3 | SDA
TX |
I2C: data line
UART: TX |
| 4 | VDD | Power supply: 3.0V~5.5V |
| 5 | GND | Ground |
BMC23M041 provides the following 7 commonly used commands, please refer to "Arduino Library Description" document in the document label and the application note, "BCM-2102-X03 & BCM-2302-T01 Transparent Transmission Module Application", for details.
| Function | Command | Parameter | Function in the Arduino Library |
|---|---|---|---|
| Enter the receiving mode | 0x01 | 0 byte | void setRXMode(void) |
| Enter the pairing mode | 0x02 | 0 byte | void setPairMode(void) |
| Enter the sleep mode | 0x03 | 0 byte | void sleep(void) |
| Select the RF frequency band | 0x10 | 1 byte | void begin(uint8_t frequencyBand)
frequencyBand： 0x00(RF_315MHz)：315MHZ 0x01(RF_433_92MHz)：433MHz 0x02(RF_868MHz)：868MHZ 0x03(RF_915MHz)：915MHZ The module is set to 433MHz at the factory |
| Read the RX module status | 0x81 | 0 byte | uint8_t getRFStatus(void) |
| Read the received data (1 byte) | 0x82 | 0 byte | uint8_t readRFData(void) |
| Read the module version | 0x90 | 0 byte | int16_t getFWVer(void) |
| HS Code (reference) | 8517.79.00.00-6 |
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