If you insert a coin into the slot, the machine will work.

如果你在入口处丢进一枚硬币，机器就会工作。

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If you'd like to pitch a project, please send us a tip with "Insert Coin" as the subject line.

ENGADGET

We first heard about Observos a month ago when it became a participant in our Insert Coin semifinals, but it wasn't until the Hexagonal Research product showed up at Engadget Expand that we were able to see working models of its environmentally aware sensors.

ENGADGET

To celebrate the DIY ingenuity and high tech innovation demonstrated by our intrepid entrants, we're running an Insert Coin Twitter Giveaway that gives a little something back to all the makers out there.

ENGADGET