E07-m1101d Pinout 🔔
Based on the part number format, the E07-M1101D is a wireless module manufactured by EBYTE (Chengdu Ebyte Electronic Technology). It is part of their long-range wireless series (likely based on the Si4463 or CC1101 RF chip, depending on the specific generation, though the 'M' often denotes high power).
Below is the standard pinout configuration for the E07-M1101D module. e07-m1101d pinout
Mistake 3: Ignoring CSn – Tied to Ground
Symptom: SPI bus conflicts if other devices share MOSI/MISO/SCK.
Fix: Drive CSn from an MCU pin. Never ground it permanently unless the e07-m1101d is the only SPI device. Based on the part number format, the E07-M1101D
Mistake 4: No Decoupling Capacitor
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. SI (Pin 3) – Master Out Slave In
SPI Interface Pins (Pins 3, 4, 5, 6)
The CC1101 is controlled entirely via SPI. Ensure your microcontroller operates at 3.3V logic. If using a 5V MCU, use a level shifter (e.g., a voltage divider or dedicated IC).
- SI (Pin 3) – Master Out Slave In (MOSI): Data sent from MCU to the module.
- SCK (Pin 4) – Serial Clock: Generated by the MCU. Max speed is 10 MHz.
- SO (Pin 5) – Master In Slave Out (MISO): Data sent from module to MCU. High-impedance when CSn is deasserted.
- CSn (Pin 6) – Chip Select: Must be pulled low before any SPI transaction and high after. Do not tie it permanently low (except in rare “stream” modes, not recommended for beginners).
Q3: Why are there two GND pins?
To reduce ground inductance and improve RF performance. Always connect both if possible.