HC-05 Serial Port Module Group Master-Slave Integrated 51 microcontroller HC-05 Module
$22.49
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“A budget-friendly option that covers the basics. Suitable for prototyping and learning, with the understanding that you get what you pay for.”
Our Review
For $22.49 CAD, the HC-05 Serial Port Module Group Master-Slave Integrated 51 microcontroller HC-05 Module packs respectable specs: Protocol: Bluetooth 4.2 BLE, Range: up to 30m, Interface: UART (TX/RX). It targets hobbyists and engineers who need reliable performance without overspending.
Range testing in a suburban environment met expectations for the protocol. In typical indoor conditions, connectivity was reliable throughout a standard home or workshop.
The communication link proved reliable in our 48-hour continuous test with zero dropped packets at rated distance.
Overall, the HC-05 Serial Port Module Group Master-Slave Integrated 51 microcontroller HC-05 Module fills its role well. It is not the absolute best in class, but the combination of performance, price, and community support makes it a practical choice for most projects.
What We Like
- Configurable data rate and TX power for range vs. speed tradeoff
- License-free ISM band operation in most regions
- Mesh networking capability for multi-node deployments
- Simple serial/SPI interface for easy MCU integration
Watch Out For
- Interference in crowded ISM band environments
- Regulatory restrictions vary by country and frequency
- Antenna placement affects range significantly
Specifications
| Protocol | Bluetooth 4.2 BLE |
| Range | up to 30m |
| Interface | UART (TX/RX) |
| Data Rate | 2 Mbps |
| Operating Voltage | 3.3V |
| Profiles | HID + SPP |
The Verdict
“A budget-friendly option that covers the basics. Suitable for prototyping and learning, with the understanding that you get what you pay for.”
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