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Components

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Passive Piezo Buzzer w/Leads - 30mm
$4.50  
19 pc(s)
This is a small 30mm round passive buzzer that operates around the audible 2kHz range. We drove it directly from a 3v to 5V Arduino or micro:bit to generate simple melody. The buzzer comes with ~80mm leads terminated with male pin. Note : This passive buzzer requires a square wave...
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Passive Piezo Buzzer w/Leads -13mm
$3.90  
35 pc(s)
This is a small 13mm round passive buzzer that operates around the audible 4kHz range. We drove it directly from a 3v to 5V Arduino or micro:bit to generate simple melody. The buzzer leads are terminated with male pin. Note : This passive buzzer requires a square wave (PWM) signal to...
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Potentiometer 10K with Knob
$1.30  
376 pc(s)
There are lots of potentiometer out there. Some are very large, some so small they require a screwdriver. This 10K potentiometer has a small knob built right in and it's breadboard friendly to boot! Perfect for your next LCD contrast adjuster, opamp setting, or volume level. This model # is...
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Potentiometer Knob
$1.20  
32 pc(s)
This is a great looking rubberized knob for the potentiometer. Slides onto the Single Turn Potentiometer and holds tightly with a strong friction fit.
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Reed Switch - Insulated
$2.95  
Out-of-stock
This is a small device called a  reed switch . When the device is exposed to a magnetic field, the two ferrous materials inside the switch pull together and the switch closes. When the magnetic field is removed, the reeds separate and the switch opens. This makes for a great non-contact...
Out-of-stock
Relay DPDT Sealed - 5V
$3.35  
8 pc(s)
These are high quality Double Pole - Double Throw (DPDT) sealed relays. Use them to switch high voltage, and/or high current devices. This relay's coil is rated up to 10V, with a rate switching voltage of 5V. The contacts are rated up to 2A@30VDC / 1A@125VAC. Features : 5V...
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Relay SPDT Sealed - 3V
$1.20  
107 pc(s)
These are general purpose, Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current devices. This relay's coil has switch voltage of 3V at 120mA. The contacts are rated 10A at 120VAC, 10A at 30VDC. Features : 3V DC SPDT Relal Fully...
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Resistor 10K Ohm 1/4 Watt PTH (10 pcs)
$0.70  
53 pc(s)
1/6th Watt, +/- 5% tolerance PTH resistors. Commonly used in breadboards and perf boards, these 10K resistors make excellent pull-ups, pull-downs, and current limiters.
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Resistor 1K Ohm 1/4 Watt PTH (10 pcs)
$0.70  
98 pc(s)
1k Ohm, 1/6th Watt, +/- 5% tolerance PTH resistors. Commonly used in breadboards and perf boards.
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Resistor 330 Ohm 1/4 Watt PTH (10 pcs)
$0.70  
96 pc(s)
1/4 Watt, +/- 5% tolerance PTH resistors. Commonly used in breadboards and perf boards, these 330Ohm resistors make excellent LED current limiters and are great for general use.
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Resistor Kit - 1/4W 1% (600 total)
$12.90  
68 pc(s)
Don't you hate it when you're in the middle of a build and you don't have a certain value of resistor? Don't let it happen again with this resistor kit. This kit contains a resistor color code chart and 20 each of 30 standard value 1/4 Watts resistors with 1% tolerance. It's perfect for starting...
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Rotary Encoder
$4.50  
4 pc(s)
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 knob). The encoder is different from a potentiometer in that an encoder has full rotation without limits. The unit outputs gray code so that...
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