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The Hack-Key is ideally suited as a development tool for microcontroller projects.

Its main advantage is its versatility and easy configuration. All switches and signals are labeled. No matter whether your target circuit uses 3.3 V or 5 V or whether you need a DTR-signal to automatically reset your Arduino or a RTS-signal for hardware handshaking - just flip a switch and the Hack-Key is setup.



  • original FT232RL-chip from FTDI
  • pinout compatible to many Arduino boards
  • three led indicators
  • sliding switches for easy configuration
  • selectable voltage: 3.3 V and 5 V
  • switch between DTR and RTS signals
  • over-current protection by self-resetting fuse
  • power supply for connected circuit
  • compact dimensions (only 25 mm x 28 mm)
  • mounting holes
  • connector can be mounted upright or flat
  • drivers available for Windows, Mac OS X and Linux


Build instructions, Schematics and more information is avilable here

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