Difference: DevicesNeeded (3 vs. 4)

Revision 42018-03-07 - UliRaich

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Devices needed

The Raspberry Pi

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Most of the bread board wires will be male-male, however a few male-female wires are also needed to connect the TCS3200. I bent one row of pins such that they can easily be inserted into the bread board making the TCS3200 board stand vertically. In this case we need the male-female wires to connect the upper row of pins with the bread board.

male-male bread board wires

male-female bread board wires

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Even though not strictly necessary for the final project we will also use an RGB LED. This will be used in an intermediate step where we will display the color read from the TCS3200 color sensor on this RGB LED.

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simple rgb LED with common cathode
current limiting resistors on board

!LilyPad tri-color LED, common anode
current limiting resistors on board

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RGB LED with current limiting resistors.

Since the Raspberry Pi GPIOs all work on 3.3V, the HC-SR04 as well as the TCS3200 however work with TTL (5V) logic, we need a level converter to bring down the sensor signal levels from 5V to 3.3V. This can be done either with a voltage divider using 2 resistors or with this level converter

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META FILEATTACHMENT	attachment="tcs3200.png" attr="" comment="" date="1520342025" name="tcs3200.png" path="tcs3200.png" size="204129" user="UliRaich" version="2"
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META FILEATTACHMENT	attachment="lilyPad.png" attr="" comment="" date="1520342025" name="lilyPad.png" path="lilyPad.png" size="156437" user="UliRaich" version="1"

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META FILEATTACHMENT	attachment="GY-31.png" attr="" comment="" date="1520442343" name="GY-31.png" path="GY-31.png" size="78093" user="UliRaich" version="1"

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