 M Sorter
Appeared in the 2003 Product Catalog.
Texas Advanced Optical Systems TCS230
Sorting M&Ms Just Got a Bit Easier with this RGB Color Sensor
Identifying color is easy with the new Texas Advanced Optical Systems (www.taosinc.com) TCS230 frequency to color sensor. This is a high-sensitivity low-noise light-to-voltage optical converter that incorporates on board blue, green, and red optical filters. The sensor combines a photodiode and an amplifier on a single monolithic CMOS integrated circuit with a color filter over the photodiode. What’s really neat about this sensor is that it provides standard RGB color values with 90% accuracy!
 For this project you need the following parts:
- BASIC Stamp® 2 Module (#BS2-IC)
- Board of Education® programming board (#28150)
- TCS230 Color Sensor (#30054)
Reading the sensor is a matter of enabling the device, selecting the color to read by configuring two bits and counting for 10 ms on the I/O pin. The TCS230 outputs a frequency that is proportional to the 8-bit value of R,G, or B. The following example shows how to read the TCS230’s red value:
TCSS0 CON 15
TCSS1 CON 14
TCSS2 CON 11
TCSS3 CON 12
OE CON 13
TCSFreq CON 10
Red VAL byte
‘ Measure Red Value
Start:
LOW TCSS2
LOW TCSS3
COUNT TCSFreq,10,Red
DEBUG Home, ”Red =”, dec Red
M&Ms is a registered trademark of Mars, Inc.
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