KS0174 keyestudio HM-10 Bluetooth-4.0 V2

1. Introduction

keyestudio HM-10 Bluetooth-4.0 V2 adopts TI CC2541 chip, configuration space of 256Kb. It supports AT command. Users can modify working mode (master/slave), baud rate, device name, paring password, etc.

2. Specification

• Bluetooth protocol: Bluetooth Specification V4.0 BLE

• No byte limit in serial port Transceiving

• In open environment, realize 100m ultra-distance communication with iphone4s

• USB protocol: USB V2.0

• Working frequency: 2.4GHz ISM band

• Modulation method: GFSK(Gaussian Frequency Shift Keying)

• Transmission power: -23dbm, -6dbm, 0dbm, 6dbm, can be modified by AT command.

• Sensitivity: ≤-84dBm at 0.1% BER

• Transmission rate: Asynchronous: 6K bytes ; Synchronous: 6k Bytes

• Security feature: Authentication and encryption

• Supporting service: Central & Peripheral UUID FFE0, FFE1

• Power consumption: Auto sleep mode, stand by current 400uA~800uA, 8.5mA during transmission.

• Power supply: 5V DC

• Working temperature: –5 to +65 Centigrade

3. Circuit Connection

4. Sample Code

Download Resource : Resource

int val; 
int ledpin=13; 

void setup() 
{ 
  Serial.begin(9600);
  pinMode(ledpin,OUTPUT); 
} 

void loop()
{ 
    val=Serial.read(); 
    if(val=='a')
    { 
        digitalWrite(ledpin,HIGH); 
        delay(250); 
        digitalWrite(ledpin,LOW); 
        delay(250);
        Serial.println("keyestudio");
    }
}

5. Result

Open APP HC-COM, click search device, select the device, device is connected; the LED on the Bluetooth module is on.

Enter “a” in HC-COM, click send, Bluetooth APP will display keyestudio. Every time HC-COM sends an “a”, the Pin13 LED on the main board blinks once.

Note: The above used APP is only compatible with Android system. You need to search BLE Scanner 4.0 to download app in APP store if your use iphone.