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Step 3Change play button
Change now the play button for the infrared sensor. That means that the gadget is going to play the recorded message when pedestians walk close to it. That makes a much more interesting interaction that through buttons.
Follow the connections of the original play button and exchange them for the infrared. Remember to use the Relay.
Follow the connections of the original play button and exchange them for the infrared. Remember to use the Relay.
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