VMA325
V. 01 – 19/03/2018
3
©Velleman nv
5.
Overview
VMA325
The TCS230 senses colour light with the help of an 8 x 8 array of photodiodes. Then, using a current-to-
frequency converter the readings from the photodiodes are converted into a square wave with a frequency
directly proportional to the light intensity. Finally, using the Arduino
®
board we can read the square wave
output and get the results for the colour.
supply voltage: 2.7 to 5.5 VDC
dimensions : 28.4 x 28.4 mm
6.
Pin Layout
GND
ground
OUT
output frequency
S0
output frequency scaling selection input
S1
output frequency scaling selection input
S2
photodiode type selection input
S3
photodiode type selection input
V
5 VDC power supply
G
ground
OE
output enable, must be connected to G (ground)
LED
LED enable input , low=ON
7.
Example
Connection.
V======5V
GND======GND
S0======D3
S1======D4
S2======D5
S3======D6
OUT======D2
LED======D7
OE======GND
Connect your VMA325 to your microcontroller (VMA100) as above.
Download the library and data sheet from our website.
Open the Arduino IDE and import the three libraries. LiquidCrystal_I2C.h is only needed if you are also
connecting an I2C LCD to your controller.
Load the VMA325_code sketch into the IDE, compile and upload.
Start the serial monitor. You should see a result like this:
