Revision as of 06:51, 9 October 2016
Overview
BL18 ECG Maven is an ECG monitoring module based on nRF51822 BLE chip and BL1860 ECG chip, which can transport heart information through either UART or BLE. Heart information can be displayed on mobile APP through BLE or be printed through UART. Users can control nRF51822 via AT Commands. Also, they can use the open-source software to develop their own firmware, making it to support more functions.
Specification
| PCB_Size |
col45mm_X_50mm_X_16mm
|
| Input Voltage (vcc) |
5V or 3.7V battery
|
| Microprocessor |
nRF51822
|
| Interface |
UART，BLE
|
Electrical Characteristics
| Parameter |
Min |
Typical |
Max |
Unit
|
| Input Volt.（USB） |
4.5 |
5 |
5.5 |
VDC
|
| Battery Volt. Range |
3.3 |
3.7 |
4.2 |
VDC
|
| Input voltage VinH |
3 |
3.3 |
3.6 |
V
|
| Input voltage VinL |
-0.3 |
0 |
0.5 |
V
|
| Charger Current |
|
|
500 |
mA
|
| Baud rate |
|
9600 |
|
bps
|
Hardware
| J7
|
| No. |
Pin Name
|
| 1 |
TXD(P0.12)
|
| 2 |
RXD(P0.11)
|
| 3 |
5V
|
| 4 |
GND
|
| J5
|
| No. |
Pin Name |
Pin Name |
No.
|
| 1 |
5V |
GND |
2
|
| 3 |
P0.21 |
P0.22 |
4
|
| 5 |
P0.23 |
P0.25 |
6
|
| 7 |
P0.28 |
P0.29 |
8
|
| 9 |
P0.00 |
P0.04 |
10
|
| 11 |
P0.06 |
P0.07 |
12
|
| J6
|
| No. |
Pin Name |
Pin Name |
No.
|
| 1 |
3V3 |
GND |
2
|
| 3 |
P0.20 |
P0.19 |
4
|
| 5 |
P0.18 |
P0.17 |
6
|
| 7 |
P0.16 |
P0.15 |
8
|
| 9 |
P0.14 |
P0.13 |
10
|
| 11 |
P0.10 |
P0.09 |
12
|
Interface Functions
- J7 GPIO port: serial output port, this port also connects to CP2102 USB-to-TTL chip, users can send and receive data through USB.
- J5, J6 GPIO ports: general GPIO port, users can self-define the functions.
- Output Data Configuration Switch: users can select whether to use BLE to transport heart rate data. The serial port can be used no matter which side you switch to.
- USB: users can send and receive data through USB, and power the battery through USB.
- Battery Socket: 3.7V lithium battery connector.
- Pole Socket：ECG cable interface, detect heart rate by using ECG electrodes to contact human right and left hand skin. Note: LA electrode(black buckle) is attached to left hand, RA electrode(white buckle) is attached to right hand, RLD electrode(red buckle) is attached to right hand.
Useful Link
Notice