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June 7, 2013 AT 6:30 am

1930′s Teletype USB interface

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1930′s Teletype USB interface @ NYC Resistor.

Both the high voltage and the custom baud rate issues are a bit cumbersome, so I thought there must be a better way. USB ports will output about 5 W, so I figured that would be close enough to drive the magnet if I could produce sufficiently high voltage. Using Adafruit’s boost converter calculator, I came up with some rough numbers and built a circuit that handles both the slow baud rate and voltage required to interface with the teletype


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