This is a great way to induce linear motion for pushing, pulling or controlling switches and levers. According to the datasheet this solenoid is rated for 36V but they work like a charm at 12V.
After you've assembled it, simply plug the RaspiRobot Board into the GPIO port on the Raspberry Pi and it provides dual bi-directional motor controllers, two open collector outputs, two switch inputs, a pair of status LEDs and even a voltage regulator capable of powering the Pi using a battery source from 7-12VDC.
These right angle 2 pin JST connector PRT-08612 is a surface mount connector use as a battery connection to Lithium batteries.
This is made to work with the Arduino Uno R3, Leonardo and new Arduino boards going forward. They are the perfect height for clearing the USB-B connector and great for stacking multiple shields. This kit includes 4 headers (2x 8-pin, 1x 10-pin and 1x 6-pin), enough to connect a shield to an Arduino board.
This through-hole speaker is great for projects where you need something that sounds better than a piezo buzzer but don't have room for a full-blown speaker. This 30mm diameter speaker is encased in plastic and will handle about 100mW of power.
This 9V battery holder allows your battery to snap in tight and holds it in place and has a DC plug output connector. Great for situations where you don't want the battery just hanging. It also has three mounting holes so you can attach it securely to your enclosure.
This is a package of a hundred 12 inch single male to male jumper wire set good for prototyping wire connection.
