E07-m1101d Pinout Here

| Pin Number | Pin Name | I/O | Description | Notes | | :--- | :--- | :--- | :--- | :--- | | 1 | VCC | Power | Power Supply Input | Connect to 3.3V. Do not exceed 3.6V. | | 2 | GND | Power | Ground | Connect to system ground. | | 3 | ANT | I/O | Antenna Interface | Connect to a 50Ω antenna. Do not leave floating. | | 4 | GND | Power | Ground | Connect to system ground. | | 5 | TXD | Output | UART Transmit | Connect to MCU RXD. | | 6 | RXD | Input | UART Receive | Connect to MCU TXD. |

(Note: On some versions of EBYTE modules, Pins 5 and 6 might be labeled as DATA/CLK or DI/DO if they operate in SPI mode. However, the "D" in M1101D usually signifies a built-in MCU for UART serial transmission, making TXD/RXD the correct interface for standard usage.) e07-m1101d pinout

Symptom: Unstable transmission, reduced range, or occasional resets when turning on a motor nearby.
Fix: Add a 10 µF tantalum or ceramic capacitor + 100 nF ceramic directly across VCC and GND. | Pin Number | Pin Name | I/O

Symptom: Module resets randomly or never initializes.
Fix: Pull RESET to VCC with a 10k resistor (do not short directly to VCC unless your MCU GPIO can drive it low reliably). | | 3 | ANT | I/O |