Hackaday (unofficial) April 11, 2022 6:00am Coin Acceptors are Higher-Tech Than You Think #arduinohacks #teardown #coinacceptor #coinselector #coinop #vendingmachine #hackaday posted by pod_feeder_v2 Coin Acceptors Are Higher-Tech Than You Think Coin-operated machines have a longer history than you might think. Ancient temples used them to dispense, for example, holy water to the faithful in return for their coins. Old payphones rang a bel…