User Manual Q&AAnswer
Sep 24, 2025 - 04:21 PM
To connect the HC03RFM ISM Transceiver Module to your microcontroller for communication, you will need to follow these steps:
1. **Power Supply Connection:**
- Connect the 3.3V (VDD) pin of the HC03RFM module to the power supply of your microcontroller. The module operates with a power supply input range of 1.8V to 3.6V.
2. **Ground Connection:**
- Connect the GND pin of the HC03RFM module to the ground (GND) of your microcontroller.
3. **Data Communication:**
- For data communication between the module and your microcontroller, you will need to use the SPI interface.
- Connect the CSB pin (SPI chip select input) to a digital output pin on your microcontroller.
- Connect the SCK pin (SPI clock input) to the clock pin of your microcontroller.
- Connect the FCSB pin (SPI FIFO select input) to a digital output pin on your microcontroller.
- Connect the SDIO pin (SPI data input and output) to the data input/output pin of your microcontroller.
4. **General Purpose I/O:**
- The module also provides GPIO pins (GPIO1, GPIO2, GPIO3) that can be configured through registers to perform various functions. You can connect these GPIO pins to the corresponding pins on your microcontroller based on your application requirements.
5. **Antenna Connection:**
- Connect an antenna to the ANT pin of the HC03RFM module for RF signal transmission and reception.
By following these connection steps and referring to the pin definitions provided in the user manual, you can establish communication between the HC03RFM ISM Transceiver Module and your microcontroller for various applications such as meter reading, wireless data collection, automobile security systems, and home automation.
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