Rohm BH1790GLC-EVK-001 User manual

© 2017 ROHM Co.,Ltd.
BH1790GLC-EVK-001 Manual
Feb/07/2017
Sensor Application G

P. 1
© 2017 ROHM Co.,Ltd.
Preparation
•Arduino Uno 1pcs
•Personal Computer installed Arduino IDE 1pcs
•Requirement : Arduino 1.6.7 later
•Please use Arduino IDE downloaded from http://www.arduino.cc/
•USB cable for connecting Arduino and PC 1pcs
•SensorShield-EVK-001 1pcs
•BH1790GLC-EVK-001 1pcs

P. 2
© 2017 ROHM Co.,Ltd.
1. Connect Arduino and SensorShield
2. Connect BH1790GLC-EVK-001 on
SensorShield I2C area
3. Set voltage of SensorShield to 3V
4. VLED terminal connect to SensorShield
5V terminal (right figure)
5. Connect PC and Arduino with USB cable
USB Connector VLED terminal position
Hardware setting

P. 3
© 2017 ROHM Co.,Ltd.
Prepare the software
6. Download BH1790GLC.zip from
http://www.rohm.com/web/global/sensor-shield-support
7. Download FlexiTimer2 library from
http://playground.arduino.cc/Main/FlexiTimer2
8. After download this file, change the name to FlexiTimer2.zip
9. Launch Arduino IDE
10.Select [Sketch]->[Include Library]->[Add .ZIP library…], install 6 and 8 ZIP files
11.Select [File]->[Examples]->[BH1790GLC]->[example]->[BH1790GLC]

P. 4
© 2017 ROHM Co.,Ltd.
Check the setting about Arduino IDE
12.Check the red frame contents.
Boards is “Arduino/Genuino Uno”.
Port is COMxx(Arduino/Genuino
Uno). COM port number is
different in each environment.

P. 5
© 2017 ROHM Co.,Ltd.
Write the program about BH1790GLC-EVK-001
13.Write the program by Upload
Button (red frame) 14.Check that the message of red
frame is ”Done uploading”

P. 6
© 2017 ROHM Co.,Ltd.
Measurement
15.Select [Tools]->[Serial Plotter]
16.Put the finger as below figure (Note static electricity)
17.Display Optical Sensor Data with LED ON/OFF on graph
Optical Sensor Data
with LED ON
Optical Sensor Data
with LED OFF

P. 7
© 2017 ROHM Co.,Ltd.
Heart Rate Monitor
1. Install BH1790GLC.zip and FlexiTimer2.zip
2. Download BH1790_HeartRate.zip from
http://www.rohm.com/web/global/sensor-shield-support
3. Launch Arduino IDE
4. Select [Sketch]->[include Library]->[Add .ZIP library…], install
BH1790_HeartRate.zip file
5. Select [File]->[Examples]->[BH1790GLC_HeartRate]->[example]->[HeartRate]
6. Go ahead in the same way as P.4 and P.5
7. Select [Tools]->[Serial Monitor]
8. Put the finger as P.6 figure
9. Display Heart Rate value and wearing status.
Left value is Heart Rate [unit:bpm], right value
is wearing status [0 : not wearing, 1 : wearing]

P. 8
© 2017 ROHM Co.,Ltd.
Board Information
Part number function
C1 Bypass capacitor for VDD(VCC1,VCC2)
C2 Bypass capacitor for VCC2(N.M.)
C3 Bypass capacitor for VLED(N.M.)
R1
0Ω register for connecting VCC1 to VCC2
R2 Pullup register for SCL(N.M.)
R3 Pullup register for SDA(N.M.)
※N.M. = No Mount
Top Bottom
If you want to supply different voltage to VCC1 and VCC2,
remove R1 register and supply voltage VDD and VCC2.
It is also possible to mount C2 Capacitor additionally.

© 2017 ROHM Co.,Ltd.