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The Amazon Echo is useful to have around the home. It can play podcasts, take reminders and notes, tell you the length of your commute, even control other appliances in your house. But at prices ranging from $50 to $150, itâs an expensive proposition if youâre not sure youâll use it. Good news though, you can make a fully-functional one using a Raspberry Pi. Update: This method is a little easier
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