Connect to 3.3V and GND. Important: The module operates at 3.3V. Connecting to 5V will destroy the device.
Understanding the specific role of each pin is essential for correct implementation.
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// Initialize the radio module int state = radio.begin(); if (state == RADIOLIB_ERR_NONE) Serial.println("E07-M1101D initialized successfully!"); else Serial.print("Initialization failed, error code "); Serial.println(state); while (true); e07-m1101d pinout
Up to 1km in open areas (model dependent)
in clear, open areas depending on the antenna and data rate. Modulation: Supports OOK, ASK, GFSK, 2-FSK, 4-FSK, and MSK. Data Buffer:
While the E07-M1101D pinout offers a wide range of features and functionalities, there are some challenges and limitations to consider: Connect to 3
The intelligence of the E07-M1101D is accessed via a standard 4-wire SPI (Serial Peripheral Interface) bus. This occupies four critical pins: SI (Master Out Slave In / MOSI), SO (Master In Slave Out / MISO), SCLK (Serial Clock), and CSN (Chip Select Not). Unlike simpler RF modules (like the 433MHz ask/ook modules), the CC1101 inside the E07-M1101D contains dozens of internal configuration registers. The SPI interface is the gateway to these registers, allowing the engineer to program frequency deviation, data rate, output power, and channel filtering.
The from EBYTE is a popular, cost-effective sub-1GHz wireless transceiver module based on the Texas Instruments CC1101 chipset. Operating primarily in the 433MHz band, it is highly sought after by IoT enthusiasts for applications like home automation, smart meters, and remote sensing.
| Pin | Name | Type | Description | | :-- | :------- | :------ | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 1 | | Power | Ground (0V). This pin must be connected to the ground of your power supply and your microcontroller. In 10-pin versions, multiple GND pins are present but they are all internally connected. | | 2 | VCC | Power | Power Supply (1.8V – 3.6V). The module is strictly a 3.3V device. For optimal performance, a stable 3.3V supply is recommended. Never apply 5V , as this will cause permanent damage. | | 3 | GDO0 | Digital Output | General Digital Output 0. This is a configurable general-purpose I/O pin on the CC1101. In many applications, it's configured as a "TX FIFO" indicator or can be left unconnected if not needed. | | 4 | CSN | Digital Input | Chip Select (Active Low). This is the slave select pin for the SPI bus. You must drive this pin LOW to initiate communication with the module. | | 5 | SCK | Digital Input | Serial Clock. This is the clock line for the SPI bus. The microcontroller generates this signal to synchronize data transfer. | | 6 | MOSI | Digital Input | Master Out, Slave In. This is the data line used by the master device (your microcontroller) to send data to the module. | | 7 | MISO/GDO1 | Digital Output | Master In, Slave Out / General Output 1. This pin serves a dual purpose. Primarily, it is the data line for the module to send data back to the master. It can also be used as a second configurable output pin (GDO1). | | 8 | GDO2 | Digital Output | General Digital Output 2. This is the most critical and commonly used status pin. It is often configured to output a signal on packet reception (RX FIFO), serving as an interrupt line to the microcontroller. | Understanding the specific role of each pin is
Critical—requires a stable 3.3V source. 5V will damage the unit. GND (Pin 1): System ground.
Configurable I/O pins for status, with GDO0 often used for interrupts. Application Example: Arduino Mega
General Purpose Digital I/O pin 0. Used for interrupt signals, data output, or clocking. CSN
You rarely need to write code at the register level, as several excellent libraries exist to handle the CC1101.
void setup() Serial.begin(115200); SPI.begin(); // Or use specific pins: SPI.begin(SCLK_PIN, MISO_PIN, MOSI_PIN, SS_PIN);