HC-11 Wireless Module

HC-11 wireless module

The HC-11 433MHz Wireless Serial Port Module is based on the TI C1101 ultra low-power wireless transceiver IC. As well as the C1101 wireless transceiver, the module also includes a microcontroller with preprogramed firmware (no programming required by the user) that provides seamless connection via a TTL serial UART interface. Using this interface the module can operate in one of 3 modes:

Command mode (Pin 5 pulled low)

Allows for text based serial 'AT' commands to be sent to the module, or remote module(s) allowing for various configuration options to be set such as Local/Remote Channel, address, baud rate, etc.

Serial pass-through mode (Pin 5 high)

Any serial data sent to the module will be transmitted to any receiving module on the same channel and address and will be present on its Tx pin. Conversely Any serial data sent to a remote modules serial interface Rx pin will be received by the local module.

IO Mode

By issuing an appropriate AT command whilst the module is in command mode, the module can be reconfigured from wireless serial pass-through mode to a wireless digital IO module. In this mode the Rx, Tx, and Con pins are reconfigured as digital IO pins. Whilst in this mode the same pins any module configured as a slave can be controlled by the state of the state of these pins. This allows for remote device to be digitally controlled without the use of a microcontroller.

Pinout:

Features:

§  433.4-473.0MHz operation (depending on channel)

§  Ultra-low power consumption (3.5mA or 22mA depending on mode) with sleep option (80μA).

§  10dBm output power and high sensitivity providing long range in the open environment.

§  3V～6V operating voltage.

§  Serial pass through mode to replace the serial cable (half duplex).

§  IO pass through modes.

§  3V interface with 5V tolerance.

§  You can set the frequency and set the address, and dozens of instructions, automatic filter

§  8.Small size (13.5 × 28.2mm).

§  255 selectable addresses

§  20 selectable channels

Default Settings:

§  Baud rate: 9600

§  Channel: 1

§  Module address: 0

§  Tx Power: 8 (10dBm)

§  HC-11 Pinouts