Sparkfun

This little round on/off/on toggle switch is rated up to 10A at 125VAC and can be panel mounted in a 20mm diameter hole. It’ll also look pretty sli...

These panel-mounting rocker switches have built-in indicator lights to let you know when your switch is engaged. They mount into a 20.2mm diameter ...

These panel-mounting rocker switches have built-in indicator lights to let you know when your switch is engaged. They mount into a 20.2mm diameter ...

Your project will probably need an on/off switch. If you plan to house the project in an enclosure, we found this great rocker switch to help you o...

This little round on/off rocker switch is rated up to 10A at 125VAC and can be panel mounted in a 20mm diameter hole. It'll also look pretty slick ...

This little round on/off toggle switch is rated up to 10A at 125VAC and can be panel mounted in a 20mm diameter hole. It\'ll also look pretty slick...

This durable roll up tool bag provides you with 23 pockets to store your, pliers, flush cutters, hand-held soldering iron, spent uranium rods, scre...

  This cable is perfect for connecting your RooStick or Roo232 to your Roomba SCI port. Wired straight through. Male miniDIN 8 connectors on each e...

A new device from RoboDynamics, the RooStick will allow any computer with a USB port to serially communicate with a Roomba. This allows any progra...

This is a 12-step rotary encoder with a nice 'clicking' feel. It's breadboard friendly, and has a pretty handy select switch (by pushing in on the ...

This is a 12-step rotary encoder with a nice \'clicking\' feel. It\'s breadboard friendly, and has a pretty handy select switch (by pushing in on t...

This 1024 pulse per rotation rotary encoder outputs [gray code](http://en.wikipedia.org/wiki/Gray_code) which you can interpret using a microcontro...

This 200 pulse per rotation rotary encoder outputs [gray code](http://en.wikipedia.org/wiki/Gray_code) which you can interpret using a microcontrol...

  Rotary encoders are used similarly to potentiometers. They're different from potentiometers in that an encoder has full rotation without limits. ...

Rotary encoders can be used similarly to potentiometers. The difference being that an encoder has full rotation without limits (It just goes round ...

Rotary encoders can be used similarly to potentiometers. The difference being that an encoder has full rotation without limits (It just goes round ...

Rotary encoders can be used similarly to potentiometers. The difference being that that an encoder has full rotation without limits (It just goes r...

This is a clever little breakout board for both the RGB and R/G illuminated rotary encoders. On one side, it breaks out all of the RGB pins to stan...

The Rotary Encoder LED Ring is a position indicator for rotary encoders.  Traditional knobs with indicator lines do not give accurate representati...

An adjustable potentiometer can open up many interesting user interfaces. With this rotary potentiometer just turn the dial and the resistance chan...

An adjustable potentiometer can open up many interesting user interfaces. With this rotary potentiometer just turn the dial and the resistance chan...

An adjustable potentiometer can open up many interesting user interfaces. Turn the pot and the resistance changes. Connect VCC to an outer pin, GND...

An adjustable potentiometer can open up many interesting user interfaces. Turn the pot and the resistance changes. Connect VCC to an outer pin, GND...

This is a single pole, 10 position rotary switch able to select up to 10 different states in a durable package. Unlike our other rotary switch, thi...