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HC-05 Bluetooth TTL Module
HC-05 Bluetooth TTL module supporting Master/Slave modes—ideal for Arduino, robotics, and wireless serial communication projects.
Description
The HC-05 Bluetooth TTL Module is a popular wireless communication module designed to provide Bluetooth serial connectivity between microcontrollers and Bluetooth-enabled devices. Supporting Bluetooth 2.0 + EDR and the Serial Port Profile (SPP), it enables reliable wireless data transmission for embedded applications.
The HC-05 module operates in both Master and Slave modes, allowing flexible configuration for various communication scenarios. It uses TTL-level UART communication, making it easy to interface with Arduino, ESP32, STM32, Raspberry Pi, and other microcontroller platforms.
Commonly used in wireless control, robotics, home automation, data logging, and mobile app-based projects, the HC-05 Bluetooth module offers stable performance, easy setup using AT commands, and low power consumption.
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Text to Speech TTL Module (Serial to Speech)
- Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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Voice effect optimization
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Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes
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