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Resistor Kit - 1/4W (500 total)
Price: $13.25
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Sparkfun Item #: COM-10969 -

"Resistors are a good thing, in fact, they’re actually crucial in a lot of circuit designs. The only problem seems to be that resistors disappear into thin air. The only way to be sure that you’re gonna have the resistor you need when you need it is to stock up, and keep them organized. We have just the thing! Our new branded resistor kit comes with 25 each of 20 different resistor values (including 0Ω links!). All of these resistors are stapled into a tri-fold pack and...

Copper Tape - 5mm (50ft)
Price: $4.85
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Sparkfun Item #: PRT-10561 -

"Copper tape has countless applications in electronics from creating low-profile traces for electrical components to RF-shielding and antenna-making. Copper tape is even used to join things together using solder, like the stained glass on Tiffany lamps. This copper tape is adhesive-backed, 5mm wide and comes in rolls of 50 feet. Thickness: 3 mil"

Copper Tape - Conductive Adhesive, 5mm (50ft)
Price: $6.52
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Sparkfun Item #: PRT-13827 -

"Copper tape has countless applications in electronics from creating low-profile traces for electrical components to RF-shielding and antenna-making. Copper tape is even used to join things together using solder, like the stained glass on Tiffany lamps. This copper tape is backed by a conductive adhesive, is 5mm wide and comes in rolls of 50 feet. Perfect for more precise projects. Documents: Datasheet MSDS " ...

Circuit Scribe Lite Kit
Price: $47.22
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Sparkfun Item #: COM-13184 -

"This is the Circuit Scribe Lite Kit, a all-in-one starter pack to create simple circuits with conductive ink. Once you unpack this kit set-up is simple, by drawing two lines that connect the LED module to a battery with the Conductive Ink Pen you will have your first basic circuit. Of course you don’t need to just stop at lighting up an LED Module, the Conductive Ink Pen included in this kit can be used for any type of circuit you wish to create! With Circuit Scribe you can draw exactly...

Heat Shrink Kit
Price: $13.25
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Sparkfun Item #: PRT-09353 -

"We love heat shrink! We use it for all sorts of handy projects. Use it to reinforce connections, protect devices, and electrically isolate exposed solder joints. We worked with a manufacturer to create a kit that we would use: lots of colors, lots of sizes, nothing too long. We specially requested some of the sizes with heat sensitive glue which significantly increases stress relief and water proofing. This kit includes 95 pieces of heat shrink, all of varying colors and sizes, and comes in a...

Circuit Scribe Maker Kit
Price: $151.72
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Sparkfun Item #: COM-13255 -

"This is the Circuit Scribe Maker Kit, a massive conductive ink pack with a full range of modules and other items that you can use to create cool circuits. Similar to the Lite Kit, this Circuit Scribe Maker Kit is easy to set-up, choose the modules you want to connect, draw your circuit lines with the included Conductive Ink pen and you’re good to go! With this kit you will be able to work with more advanced output components and sensors. Add sound to your circuits using the Buzzer...

Rotary Potentiometer - Linear (10k ohm)
Price: $1.56
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Sparkfun Item #: COM-09288 -

"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 microcontroller and get a variable input from the user! This is a center-tap linear type potentiometer. The outer two pins will always show 10K resistance, the center pin resistance to one of the...

Diode Rectifier - 1A 50V
Price: $0.25
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Sparkfun Item #: COM-08589 -

"This is a simple, very common rectifier diode. Often used for reverse voltage protection, the 1N4001 is a staple for many power, DC to DC step up, and breadboard projects. 1N4001 is rated for up to 1A/50V. If you need a bunch of these, you can get good bulk discounts on Digikey, part # : 1N4001-TPMSCT-ND Documents:Datasheet"

Mini Speaker - PC Mount 12mm 2.048kHz
Price: $3.25
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Sparkfun Item #: COM-07950 -

"This is a small 12mm round speaker that operates around the audible 2kHz range. You can use these speakers to create simple music or user interfaces. This is not a true piezoelectric speaker but behaves similarly. Instead of a piezoelectric crystal that vibrates with an electric current, this tiny speaker uses an electromagnet to drive a thin metal sheet. That means you need to use some form of alternating current to get sound. The good news is that this speaker is tuned to respond best with...

Schottky Diode
Retail: $0.50
Price: $0.25
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Sparkfun Item #: COM-10926 -

"Schottky diodes are known for their low forward voltage drop and a very fast switching action. This 1A 40V Schottky diode is ideal for use with motor drivers such as the L298N. Documents: Datasheet "

Capacitor Ceramic 0.1uF
Retail: $0.50
Price: $0.42
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Sparkfun Item #: COM-08375 -

"This is a very common 0.1uF capacitor. Used on all sorts of applications to decouple ICs from power supplies. 0.1" spaced leads make this a perfect candidate for breadboarding and perf boarding. Rated at 50V. If you need a bunch of these, you can get good bulk discounts on Digikey, part # : 399-4266-ND Documents:Power Supply Lecture Sold in single pieces"

Speaker - 0.5W (8 ohm)
Price: $3.35
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Sparkfun Item #: COM-09151 -

"A small audio speaker that is ideal for radio and amplifier projects and is small enough to fit in robot projects. Features: Small Size Power rating: 0.5W Impedance: 8 ohm Dimensions: 50mm diameter, 16mm high, 28mm base diameter"

Rotary Encoder
Price: $4.92
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Sparkfun Item #: COM-09117 -

"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 you can tell how much and in which direction the encoder has been turned. This unit does not come with a knob, but a working knob is related below. Documents: Datasheet Rotary Encoder...

Alligator Clip
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Price: $0.82
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Sparkfun Item #: PRT-00111 -

"A staple for the electrical engineer. I can’t tell you how many times I’ve been one clip short! Note: Sold as a single unit."

Circuit Scribe Conductive Ink Pen
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Price: $34.16
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Sparkfun Item #: COM-13254 -

"This is the Circuit Scribe Conductive Ink Pen, a simple looking ball-point pen that allows you to draw circuits instead of soldering or wiring them to a breadboard. This is the same pen found in the Circuit Scribe Lite Kit just without the LED module and batteries, we understand that you may just need to draw out a quick circuit with your own parts or need a replacement pen. With Circuit Scribe you can draw exactly what you want, no wires or breadboard required. You can build a circuit with...

Relay SPDT Sealed
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Price: $3.70
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Sparkfun Item #: COM-00100 -

"These are high quality Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current devices. This relay’s coil is rated up to 12V, with a minimum switching voltage of 5V. The contacts are rated up to 5A (@250VAC, 30VDC). Note: In the Datasheet below there is a pin layout listed as “Bottom View.” Be aware, this pin layout is actually the top-down view NOT bottom-up. Features: 5V DC SPDT Relay Rated up to 5A Fully Sealed Documents:...

MicroSD Card with Adapter - 8GB
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Price: $28.70
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Sparkfun Item #: COM-11609 -

"This is an 8 gig microSD memory card. It’s perfect for massive datalogging without taking up a lot of space. These microSD cards have a simple to use SPI interface allowing any micro to read and write data. It even comes with an SD card adapter and a USB adapter! Includes: 8GB MicroSD card MicroSD Adapter USB adapter Features: Class 4 (up to 4MB/s read-write) 8GB Storage " ...

SparkFun Beginner Parts Kit
Price: $33.25
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Sparkfun Item #: KIT-10003 -

"This is the new revision of the kit. We switched to a better trimpot and green LED. This is a kit that gives you all of the basic thru-hole components you will need to get started playing with embedded projects. These are the ‘bubble gum’ parts that we regularly use. A good starter assortment of caps, ICs, regulators, diodes, and good-for-blinky LEDs. Be sure to look through our tutorials for some great projects. This assortment of parts makes a great gift for beginner and...

Resistor 10K Ohm 1/6th Watt PTH - 20 pack
Price: $1.58
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Sparkfun Item #: COM-11508 -

"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. We’ve opted for a new and more breadboard-friendly lead thickness (they’re a bit thicker than our last ones). These resistors come in bags of 20. Documents: Breadboard Lecture Sensor Interfacing Voltage Dividers " ...

Rotary Switch - 10 Position
Price: $3.22
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Sparkfun Item #: COM-13253 -

"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, this model is much more robust and capable of handling larger currents and voltages. You may find this rotary switch familiar, it’s the same one we trusted in our Decade Resistance Box! With a max voltage rating of 125VAC at 0.3A and a dielectric strength of 250VAC for 1 minute this is a serious little rotary switch capable of working with some...

Rotary Encoder - Illuminated (RGB)
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Price: $6.50
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Sparkfun Item #: COM-10982 -

"Rotary encoders can be used similarly to potentiometers. The difference being that an encoder has full rotation without limits (It just goes round and round). This is a quadrature encoder and outputs similar to 2-bit gray code so that you can tell how much and in which direction the encoder has been turned. They’re great for navigating menu screens and things like that. This encoder is especially cool because it has a common anode RGB LED built in, as well as a push-button. Look below...

Thin Speaker
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Price: $1.56
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Sparkfun Item #: COM-10722 -

"If you want to get some sound out of your project but have a tight space budget, this is a good way to do it. This 0.25W, 8Ohm speaker is only 40mm in diameter and just over 4mm thick, the same kind you might find in one of those “talking greeting cards”. Documents: Datasheet Dimensional Drawing " ...

SparkFun RS232 Shifter - SMD
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Price: $22.96
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Sparkfun Item #: PRT-00449 -

"The smallest and easiest to use serial conversion circuit on the market! This board has one purpose in life - to convert RS232 to TTL and vice versa (TX and RX). This will allow a microcontroller to communicate with a computer. Shifter SMD is powered from the target application and can run at any voltage! That’s right - power the board at 5V and the unit will convert RS232 to 5V TTL. Power the board at 2.8V and the Shifter board will convert RS232 to 2.8V CMOS TTL. Includes two...

Digital Potentiometer - 10K
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Price: $2.48
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Sparkfun Item #: COM-10613 -

"Potentiometers are incredibly useful, whether you’re controlling the volume on your stereo or the ‘mood lighting’ in your room. The problem with traditional potentiometers is the fact that your microcontroller doesn’t have an easy way to interface with them. Digital Potentiometers solve that problem by allowing you to control a voltage splitter with digital signals. Wire it up just like a potentiometer and use serial signals to ‘turn the knob.’ Another...

Heat Sink Compound
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Retail: $4.95
Price: $3.21
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Sparkfun Item #: PRT-09599 -

"This is a 5g syringe of white heatsink compound (aka thermal grease, thermal paste, thermal goo). Use this whenever you’re connecting a component to a heatsink, it’ll really help to dissipate even more potentially damaging heat. This compound is composed of 50% silicone, 20% carbon, and 30% metal oxide. It has a thermal conductivity of 1.172 W/(mK), which should be plenty for voltage regulators, MOSFETs, motor drivers, audio amplifiers, etc. Features: Color: White Thermal...

Diode Small Signal - 1N4148
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Price: $0.25
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Sparkfun Item #: COM-08588 -

"This is a very common signal diode - 1N4148. Use this for signals up to 200mA of current. If you need a bunch of these, you can get good bulk discounts on Digikey, part # : 1N4148FS-ND Documents: Datasheet "

Thermoelectric Cooler - 40x40mm
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Price: $19.67
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Sparkfun Item #: COM-10080 -

"Thermoelectric coolers (TEC or Peltier) create a temperature differential on each side. One side gets hot and the other side gets cool. Therefore, they can be used to either warm something up or cool something down, depending on which side you use. You can also take advantage of a temperature differential to generate electricity. The thermal tape listed below works very well to attach heat sinks to the hot side. This Peltier works very well as long as you remove the heat from the hot side....

Muscle Wire - 0.005" Diameter (1 foot)
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Price: $2.47
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Sparkfun Item #: COM-11899 -

"This 0.005" Muscle Wire® (aka shape memory Nitinol) is a one foot long piece of nickel-titanium alloy that can flex and contract when a specific amount of heat or current is applied to it. If you are asking yourself “What sorcery is this?!” We assure you, this isn’t magic, it’s just simple science thanks to shape memory and a change between the wires weaker, low temperature form (martensitic) and its stronger, high temperature form (austenite). When the Muscle...

Analog Panel Meter - 0 to 5 VDC
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Price: $8.15
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Sparkfun Item #: TOL-10285 -

"This analog panel meter measures DC voltage from 0-5 volts with 2.5% accuracy. It has a clear and easy to read scale and an adjustable dial. These come in handy for measuring the output of sensors with 5V ranges. The face of the meter is 45x45mm overall. The mounting hole should be 38mm. The overall depth of the meter is 35mm. Documents: Product Sheet "

Rotary Encoder - 200 P/R
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Price: $51.43
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Sparkfun Item #: COM-10790 -

"This 200 pulse per rotation single-output encoder outputs electrical pulses which you can interpret using a microcontroller to find the position of the input shaft. This allows you to add feedback to motor control systems. Encoders of this kind are often used in balancing robots and dead reckoning navigation. The encoder comes with a set screw coupler which will attach to any 4mm shaft. Features: Resolution: 200 Pulse/Rotation Input Voltage: 5 - 12VDC Maximum Rotating Speed: 5000rpm Allowable...

Heating Pad - 5x15cm
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Price: $8.15
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Sparkfun Item #: COM-11289 -

"These DC powered heating pads are perfect for near-body heating applications. They get warm to the touch but not too hot. Simply apply 5VDC to the wire leads and within minutes, the pad will begin to warm up. These heating pads are constructed using a mesh of Polyester filament and Micro Metal Conductive Fiber folded into a protective Polyimide Film. The fact that these are low power, flexible and draw little power makes them ideal for things like hand-warmers and other heated garments. Maybe...

MicroSD Card with Adapter - 16GB (Class 10)
Price: $15.18
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Sparkfun Item #: COM-13833 -

"This is a class 10 16GB microSD memory card, perfect for housing operating systems for single board computers and a multitude of other information. Since this is a class 10 microSD it is capable of transferring data at speeds up to 45MB/s allowing it to have a noticeable increase in performance while running an on-board OS. Each microSD card comes with its own SD adapter for better ease of access. Additionally this microSD card is perfect when used with the Raspberry Pi 3, as its boot card....

Heatsink TO-220
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Price: $1.56
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Sparkfun Item #: PRT-00121 -

"Small heat sink for TO-220 components. Ideal for keeping your 5V and 3.3V regulators running cool. Black anodized bolt on type with 2.5W dissipation."

Relay SPDT Sealed - 20A
Price: $4.92
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Sparkfun Item #: COM-10924 -

"These are massive single pole - double throw (SPDT) sealed relays. This means that when current is applied to the coil it throws a simple changeover switch, terminating the connection from the NC contact to ground and closing the NO contact. Use them to switch high voltage/high current devices. Features: SPDT Relay Contacts Rated up to 220VAC @ 20A Coil Voltage: 5V Fully Sealed Documents: Datasheet (JQX-15F/005) Relay Tutorial " ...

Black Metal Knob - 14x24mm
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Price: $2.47
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Sparkfun Item #: COM-10002 -

"Knobs are a great way to finish off your project and make it easier to adjust the level of your death ray. This knob mates to a 0.25" shaft. The knob slides onto the potentiometer and holds tightly with a strong friction fit. The main body of these knobs is metal with a plastic insert. The outside is knurled for precise adjustment. Dimensions: 14mm high 24mm diameter "

Clear Plastic Knob
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Price: $1.56
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Sparkfun Item #: COM-10597 -

"This plastic knob accepts a 6mm shaft and has a 15mm outer diameter. They simple press-fit onto a shaft. These are clear so that they can be used with our illuminated rotary encoders. Documents: Dimensional Drawing "

Laser Module - Green
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Price: $24.60
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Sparkfun Item #: COM-09906 -

"A very powerful 5mW green laser. Fun, but don’t point in anyone’s eyes. These units include two solder points for permanent on. The trim-pot adjusts the output power. We were able to push the current up to about 400mA where things started getting toasty, and very bright. Features: 532nm Green Laser 5mW output power (FDA Class IIIa) 2.5V to 4.5V input voltage Max current: 300mA Dimensions: 56 x 11.5mm Documents:Datasheet" ...

Piezo Element
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Price: $2.47
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Sparkfun Item #: SEN-10293 -

"Piezo elements come in handy when you need to detect vibration or a knock. You can use these for tap or knock sensors pretty easily by reading the voltage on the output. They can also be used for a very small audio transducer such as a buzzer. Documents: Datasheet (7BB-20-6L0) Arduino Tutorial " ...

GTE Knob - Small
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Price: $1.56
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Sparkfun Item #: COM-11951 -

"Do you need that extra push over the cliff? The Small sized GTE (Goes To Eleven) Knob can fit onto potentiometers with a 6mm wide shaft thanks to a brass insert with a set screw. We know that most of you are playing at ten, but with the GTE Knob you can go… one louder. Note: It goes to eleven. Dimensions: 23.6 x 14.2mm Documents: Dimensional Drawing Product Video " ...

Copper Tape - Conductive Adhesive, 2" (50ft)
Price: $26.32
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Sparkfun Item #: PRT-13828 -

"Copper tape has countless applications in electronics from creating low-profile traces for electrical components to RF-shielding and antenna-making. Copper tape is even used to join things together using solder, like the stained glass on Tiffany lamps. This copper tape is backed by a conductive adhesive, is a whopping 2" wide, and comes in rolls of 50 feet. That’s a lot of copper. Documents: Datasheet MSDS " ...

IC Test Clip - SOIC 8-Pin
Price: $29.92
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Sparkfun Item #: COM-13153 -

"This is an IC Test Clip for 8-pin small outline integrated circuits (SOIC). This test clip assures a secure connection to all chip leads on an 8-pin SMD SOIC and provides hands-free testing. On this test clip you will find two sets of gold plated contacts, upper contacts to attach wiring and lower contacts for an 8-pin IC. Simply place your choice of IC in the lower contacts and attach female terminated jumper wires to the 0.1" spaced upper contacts and you are ready to start testing!...

GTE Knob - Medium
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Price: $2.06
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Sparkfun Item #: COM-11949 -

"Do you need that extra push over the cliff? The Medium sized GTE (Goes To Eleven) Knob can fit onto potentiometers with a 6mm wide shaft thanks to a brass insert with a set screw. We know that most of you are playing at ten, but with the GTE Knob you can go… one louder. Note: It goes to eleven. Dimensions: 28.9 x 18.3mm Documents: Dimensional Drawing Product Video " ...

Resistor 100 Ohm 1/4th Watt PTH - 20 pack
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Price: $1.57
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Sparkfun Item #: COM-13761 -

"These are ¼th Watt, +/- 5% tolerance PTH resistors. Commonly used in breadboards and perf boards, these 100 Ohm resistors make excellent pull-ups, pull-downs, and current limiters. Note: Although these come in bags marked with a quantity of 25, they don’t always contain 25. So we’d rather call it 20 and hope that you get extras. Documents: Breadboard Lecture Sensor Interfacing Voltage Dividers " ...

Silver Metal Knob - 14x24mm
Price: $2.50
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Sparkfun Item #: COM-10001 -

"Knobs are a great way to finish off your project and make it easier to adjust the level of your death ray. This knob mates to a 0.25" shaft. The knob slides onto the potentiometer and holds tightly with a strong friction fit. The main body of these knobs is metal with a plastic insert. The outside is knurled for precise adjustment. Dimensions: 14mm high 24mm diameter "

SparkFun MOSFET Power Control Kit
Price: $6.58
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Sparkfun Item #: COM-12959 -

"This is the SparkFun MOSFET Power Control Kit, a breakout PTH soldering kit for for the RFP30N06LE N-Channel MOSFET. This kit is extremely simple to assemble with only 10 pins to solder. If you are looking for a little more control over projects that require a little more power than normal but need a better way than your breadboard, this kit is perfect for you Included in each kit is a SparkFun MOSFET Power Control PCB, two screw terminals (one 2-pin and one 3-pin), a 10k resistor, and a...

SparkFun Discrete Semiconductor Kit
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Price: $14.77
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Sparkfun Item #: KIT-13682 -

"If you do anything with electronics, you’re probably already using transistors, but you’re probably using them in large, prepackaged clusters of just one type. The SparkFun Discrete Semiconductor Kit addresses your needs of only needing one or a couple transistors without you needing go and order a single transistor. Inside each kit you will find multiple types of semiconductors including PNP and NPN bipolar transistors, N-channel and P-channel MOSFETs, diodes, adjustable voltage...

Alligator Clips - Toothless
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Price: $1.56
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Sparkfun Item #: PRT-10290 -

"These alligator clips are useful for smaller wires that you don’t want to deform. The clip has smooth flat metal blades that clamp down on the wire, making for a good connection to thinner wires. There are strain relief crimp points and a solder hole at the end of the clip. Sold in single units. Documents: Datasheet (502008) "

Black Chicken Head Knob - 14x20mm
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Price: $1.56
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Sparkfun Item #: COM-10000 -

"Knobs are a great way to finish off your project and make it easier to adjust the level of your death ray. This knob mates to a 0.25" shaft with a set screw. The main body of these knobs have a 14mm, but extend to 32mm overall. They also have a brass insert for a tighter fit with the shaft. Dimensions: 14mm high 20mm diameter 6mm depth for shaft "