HM-10 BLE UART Module
by Jinan Huamao / clone
SKU: PSA-CMP-HM10
No reviews yetTypical India street price
₹150–₹350
Bluetooth Low Energy serial to phones — unlike classic HC-05.
Interface: BLE UART / AT
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Concept
BLE GATT serial bridge. Phones after iOS 7 / Android 4.3 speak BLE, not always SPP.
A little theory
CC2541 or similar. AT baud often 9600. UUID for UART service. In the classroom, treat HM-10 BLE UART Module as a intermediate part using BLE UART / AT. Typical India street price is about ₹150–₹350. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
Serial to RX/TX; phone app (Serial Bluetooth Terminal BLE).
Classroom & project use
- Phone-controlled robot on iOS
- Sensor to app
- Communication Modules classroom demo
Buying in India
Precautions
- Share a common GND with the microcontroller
- Verify polarity and voltage before powering the circuit
Specifications
| Radio | BLE 4.0 |
| Interface | UART |
| Category | Communication Modules |
| Difficulty | Intermediate |
| Voltage | 3.3–5V |
Pinout
VCC | GND | TX | RX (cross TX↔RX; common GND)
