Posts Tagged ‘i/o’

New Phidget: 0/0/8 Relay Controller

Thursday, February 14th, 2008

Phidgets has just introduced the PhidgetInterfaceKit 0/0/8 I/O board, which gives you USB control over 8 Double-Pole Double-Throw (DPDT) relays.  The relays can’t handle quite as much juice as those on the 0/0/4, but you get a whole bunch of them!  The relays are DPDT, so you can control 2 separate circuits with each relay.  And now, just for fun, here’s a DPDT diagram:

You get eight of these.

Just like the rest of the Phidgets line, this device can easily be used with any of the mainstream programming languages, thanks to some very friendly API’s.  Still not excited?  Read this excerpt from the press release:

  “Users can plug the PhidgetInterfaceKit 0/0/8 into their computer, and use the relay outputs to route circuits. One typical application for the 0/0/8 is the performance of automated tests and monitoring – as the large number of contacts and their suitability for switching signals makes it easy to connect test equipment into circuits.â€? says Chester Fitchett, CEO of Phidgets.

Product Specifications

  • Contact Resistance (max at 6VDC 1A): 50mOhms
  • Wetting Current / Voltage:10uA / 10mV
  • Switching Voltage (max AC): 250 VAC
  • Switching Voltage (max DC): 220 VDC
  • Switching Current (max AC/DC): 2 Amps
  • Switching Power (max): 60 W, 125VA
  • Digital Control Update Rate: ~125 updates / second
  • Operate Time (at max load): ~18ms
  • Release Time (at max load): ~18ms
  • Switching Speed (at max load): 20 contacts / minute
  • Recommended Terminal Wire Size: 16 – 26 AWG
  • Terminal Wire Strip Length: 5 – 6mm (0.196â€? – 0.236â€?)
  • USB-Power Current Specification: 500mA max
  • Device Quiescent Current Consumption: 14mA
  • Device Active Current Consumption: 380mA max


  • Switching data communication lines – USB, RS232, etc.
  • Measuring resistances between various points in a circuit
  • Switching a voltmeter to various points in a circuit
  • Controlling a number of much larger relays, or RF relays.
  • Extra pole in relay can be monitored as a switch to verify position.
  • Switching power to external circuits.

Now go buy a Phidget 0/0/8, and start switching!

OR, you can check out the entire Phidgets Phamily.