This is a 2 pin JST connector. These connectors are used in many different applications, including RC, distance sensors (like Sharp IR distance sensors), mating wires/cables, mounting to circuit boards, GPS connectors.
Typically the 2 pins are power, ground and signal (not always, and not in that order). The distance between the pins is 2.0mm (pitch).
This is a 3 pin JST connector. These connectors are used in many different applications, including RC, distance sensors (like Sharp IR distance sensors), mating wires/cables, mounting to circuit boards, GPS connectors.
Electrolytic decoupling capacitors 1000uF/6,3V. These capacitors are great transient/surge suppressors. Attach one between the power and ground of your project to ensure smooth power delivery. High quality radial electrolytic capacitors.
This is a 2x40 pin male PTH header. This piece is in the common configuration for Beaglebone Black headers that can be broken apart to form smaller header formations. Each pin has a spacing of 0.1" in between each other.
The Rotary Potentiometer - 100k Ohm is an adjustable potentiometer can open up many interesting user interfaces.
Turn the pot and the resistance changes. Connect VCC to an outer pin, GND to the
other, and the center pin will have a voltage that varies from 0 to VCC
depending on the rotation of the pot. Hook the center pin to an ADC on a...
This is the P2N2222A, an NPN silicon BJT (Bipolar Junction Transistor). This little transistor can help in your project by being used to help drive large loads or amplifying or switching applications. The P2N2222A is specifically rated at 40V and 200mA max