This is a plastic holder for mounting a mini metal gearmotors. Note: These are sold in singles. No additional hardware is included.
Features: Small 5x3.2mm footprint. Operating temperature: -40-85C. Frequency Tolerance: +/- 20ppm. 18pF load capacitance.
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 200 pulse per rotation rotary encoder outputs gray code which you can interpret using a microcontroller and find out which direction the shaft is turning and by how much. This allows you to add feedback to motor control systems. Encoders of this kind are often used in balancing robots and dead reckoning navigation but it could also be used as a very precise input knob.
