Electronics and STEM

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...

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 ...

1/6th Watt, +/- 5% tolerance PTH resistors. Commonly used in breadboards and perf boards, these 1.0M resistors make excellent pull-ups, pull-downs, and current limiters. Note: Although these come in...

1/6th Watt, +/- 5% tolerance PTH resistors. Commonly used in breadboards and perf boards, these 1.0M 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 ...

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...

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 clearly labeled. The...

These are your standard issue USB 2.0 type A to micro USB 5-pin... but wait, what's this? These cables have minor, yet genius modifications that allow both ends to be plugged into their ports...

These are your standard issue USB 2.0 type A to micro USB 5-pin... but wait, what's this? These cables have minor, yet genius modifications that allow both ends to be plugged into their ports regardless of their orientation. No longer will you fight the USB "super position" where both orientations of your plug seem incorrect. A simple solution to a problem that nearly everyone has faced. This is one of the features we love so much about USB-C, but now it works with all your Micro-B devices as...

These wireless receivers work with our 434MHz transmitters. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only...

These wireless receivers work with our 434MHz transmitters. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only receivers, they will only work communicating data one-way, you would need two pairs (of different frequencies) to act as a transmitter/receiver pair. Note: These modules are indiscriminate and will receive a fair amount of noise. Both the transmitter and receiver work at common frequencies and...

These wireless transmitters work with our 434MHz receivers. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only...

These wireless transmitters work with our 434MHz receivers. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only transmitters, they will only work communicating data one-way, you would need two pairs (of different frequencies) to act as a transmitter/receiver pair. Note: These modules are indiscriminate and will receive a fair amount of noise. Both the transmitter and receiver work at common frequencies and...

RFID (radio-frequency identification) is the wireless non-contact use of radio-frequency electromagnetic fields, for the purposes of identifying and tracking tags attached to objects. This is the...

RFID (radio-frequency identification) is the wireless non-contact use of radio-frequency electromagnetic fields, for the purposes of identifying and tracking tags attached to objects. This is the ID-12LA, a very simple to use RFID reader module from ID Innovations. With a built in antenna, the only holdup is the 2mm pin spacing. Power the module, hold up a 125kHz card, and get a serial string output containing the unique ID of the card. Note: The new ID-12LA is essentially the same as the...

You might know RFID as the technology that Big Brother uses to track your every move. Quickly, don the tinfoil hats!! Only kidding. RFID is useful for sensing and identifying tagged people and...

You might know RFID as the technology that Big Brother uses to track your every move. Quickly, don the tinfoil hats!! Only kidding. RFID is useful for sensing and identifying tagged people and objects for access control, automation and a whole range of different applications. This basic RFID tag works in the 125kHz RF range and comes with a unique 40-bit ID. It is not reprogrammable. This blank, smooth, mildly flexible RFID tag is ready for your logo (or hand-drawn scribble). Features: EM4001...

This is the 915MHz base RFM69HCW Wireless Transceiver that is found on our RFM69 Breakout. The RFM69HCW is an inexpensive and versatile radio module that operates in the unlicensed ISM (Industry,...

This is the 915MHz base RFM69HCW Wireless Transceiver that is found on our RFM69 Breakout. The RFM69HCW is an inexpensive and versatile radio module that operates in the unlicensed ISM (Industry, Science and Medicine) band, a set of frequencies set aside for low-power, short-range, license-free radios. It’s perfect for building inexpensive short-range wireless networks of sensors and actuators for home automation, citizen science and more. This RFM69HCW module operates on the 915MHz frequency...

Ribbon cable is really helpful in situations where you need to make a lot of connections without a big mess of wires. Nothing makes a project look more finished than a nice clean wiring harness....

Ribbon cable is really helpful in situations where you need to make a lot of connections without a big mess of wires. Nothing makes a project look more finished than a nice clean wiring harness. This is a 15ft. length of 10-wire ribbon cable. Check the related products below for crimp-on connectors that will fit this cable. Documents: [Datasheet](http://cdn.sparkfun.com/datasheets/Cables/HookUp/Morethanall IDC Cable HFR-28R3HF-xx.pdf) ...

"This ZIF connector mates with the 6-conductor ribbon cable for the GP-2106 GPS module. Use it to roll your own GP-2106 carrier board! Documents: Datasheet (FH34SRJ-6S-0.5SH) " ...

"This ZIF connector mates with the 6-conductor ribbon cable for the GP-2106 GPS module. Use it to roll your own GP-2106 carrier board! Documents: Datasheet (FH34SRJ-6S-0.5SH) "

"The RN-XV module by Roving Networks is a certified Wi-Fi solution especially designed for customer who want to migrate their existing 802.15.4 architecture to a standard TCP/IP based platform...

"The RN-XV module by Roving Networks is a certified Wi-Fi solution especially designed for customer who want to migrate their existing 802.15.4 architecture to a standard TCP/IP based platform without having to redesign their existing hardware. In other words, if your project is set up for XBee and you want to move it to a standard WiFi network, you can drop this in the same socket without any other new hardware. The RN-XV module is based upon Roving Networks' robust RN-171 Wi-Fi module and...

These panel-mounting rocker switches have built-in indicator lights to let you know when your switch is engaged. They mount into a 20.2mm diameter hole and are rated up to 16A @ 12v. These simple...

These panel-mounting rocker switches have built-in indicator lights to let you know when your switch is engaged. They mount into a 20.2mm diameter hole and are rated up to 16A @ 12v. These simple SPST on-off switches have three terminals, the two that you would normally see plus a ground tab for the blue LED lamp inside. Although these are rated for 12v, the LED works with as little as 5V. Features: Blue LED Indicator SPST on-off Rated up to 16A @ 12v 20.2mm Diameter Mounting Hole Videos ...

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...

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 pot has a 1/4" mounting diameter and has a 10K linear taper. Check the datasheet for dimensional drawings. Documents: Datasheet How...

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...

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...

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...

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 of your...

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 ...

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

These are simple 2-position screw terminals with 2.54mm pitch pins. Rated up to 150V @ 6A, this terminal can accept 30 to 18AWG wire. The 2.54mm pitch will line up with standard 0.1" perf boards....

These are simple 2-position screw terminals with 2.54mm pitch pins. Rated up to 150V @ 6A, this terminal can accept 30 to 18AWG wire. The 2.54mm pitch will line up with standard 0.1" perf boards. Documents: Datasheet

Screw Terminals with 3.5mm pitch pins. Comes in 2, 3, or 4 positions and have the really cool feature of slide-locking together to form any size you need (4, 5, up to 20 without problems). Rated up...

Screw Terminals with 3.5mm pitch pins. Comes in 2, 3, or 4 positions and have the really cool feature of slide-locking together to form any size you need (4, 5, up to 20 without problems). Rated up to 125V @ 10A. Terminal can accept 16 to 26AWG wire. 3.5mm/138mil pin pitch will not fit standard 0.1" perf boards but this is the most common pitch screw terminal. Documents: Datasheet ...

    This is a 3 Pole 5.0mm Screw Terminal Block.It includes 5 units of Terminal Block.There are screws which are tightened for a secure connection for both lugs and bare wire....

    This is a 3 Pole 5.0mm Screw Terminal Block.It includes 5 units of Terminal Block.There are screws which are tightened for a secure connection for both lugs and bare wire. Specification Rated: 250,16A(250V,17.5A)Contact resistance: 200m? MaxInsulation resistance: 5000M? MinTemp range: -30?~+120?Max Soldering: +260? 5sWire range: 22-14AWG(1.5mm2)Strip length: 3.5mm      ...

The 4x4 Keypad is a general purpose 16 button (4x4) matrix keypad. It comes ready to work, simply peel-off the adhesive backing, stick it to your surface and plug it in. ...

The 4x4 Keypad is a general purpose 16 button (4x4) matrix keypad. It comes ready to work, simply peel-off the adhesive backing, stick it to your surface and plug it in.

This is your simple three conductor sensor cable with electrode pad leads. These cables are 24" long and feature a 3.5mm audio jack connector on one end with snap style receptacles for biomedical...

This is your simple three conductor sensor cable with electrode pad leads. These cables are 24" long and feature a 3.5mm audio jack connector on one end with snap style receptacles for biomedical sensor pads. Each cable comes in a red/blue/black set. Features: 24" Long 4 mm connector Documents: Product Video

    Arduino Sensor Shield V4.0 let us to build electronics projects just as easy as piling bricks. It can connect to various modules like sensors, servos, relays, buttons,...

    Arduino Sensor Shield V4.0 let us to build electronics projects just as easy as piling bricks. It can connect to various modules like sensors, servos, relays, buttons, potentiometers. Just plug & play.     Each functional module has buckled port with VCC, GND and Output, which has corresponding port on the Sensor Shield, connected with a plain 2.54mm dual-female cable you may start playing already. Buckled brick cables are like cement for bricks,...

Serial Connector - Ribbon Cable (Female, 9-pin) Description: DB9 connectors are a great way to make a tight connection on your project or to plug into existing serial lines. Now you can make...

Serial Connector - Ribbon Cable (Female, 9-pin) Description: DB9 connectors are a great way to make a tight connection on your project or to plug into existing serial lines. Now you can make your own DB9 cables the easy way with these crimp-on ribbon cable connectors. These work great with our 10-wire ribbon cable, you just need to peel back the one unneeded wire. Matching male connectors are available and can be found in the related items below. Includes: Male DB9 connector body Rear...

     This serial WiFi transceiver module is based on ESP8266 SoC.. ESP8266 is a highly integrated chip that has Integrated TCP/IP protocol stack. It offers a complete and...

     This serial WiFi transceiver module is based on ESP8266 SoC.. ESP8266 is a highly integrated chip that has Integrated TCP/IP protocol stack. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.      Besides, ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the...

Here is a simple, low-cost, high quality servo for all your mechatronic needs. This servo is very similar in size and specifications to the Hitec HS-55. This little guy is able to take in 6 volts...

Here is a simple, low-cost, high quality servo for all your mechatronic needs. This servo is very similar in size and specifications to the Hitec HS-55. This little guy is able to take in 6 volts and deliver 20.8 oz-in. of maximum torque at 0.10 sec/60° This small servo comes with a standard 3 pin power and control cable, and all hardware listed below. Note: This servo is rated for 180° rotation, but in actuality it only hits ~160°. Includes: 1x Micro Size Servo 1x Single Arm Micro Horn 1x...

Here, for all your mechatronic needs, is a simple, high quality continuous rotation servo motor. This servo is able to take in 6 volts and deliver 30.6 oz-in. of maximum torque at 0.14 sec/60° A...

Here, for all your mechatronic needs, is a simple, high quality continuous rotation servo motor. This servo is able to take in 6 volts and deliver 30.6 oz-in. of maximum torque at 0.14 sec/60° A standard 3-pin power and control cable is attached and all hardware listed below is included. Includes: 1x SM-S3317S Full Rotation Servo 1x Single Arm Horn 1x Double Arm Horn 1x Four Point Horn 4x Rubber Grommets 4x 2x15mm Phillips Screw 4x Brass Eyelets Features: Voltage: 4.8-6.0 Volts Torque:...

Here is a powerful, low-cost, reliable servo for all your mechatronic needs. This servo is able to take in 6 volts and deliver 83.47 oz-in. of maximum torque at 0.16 sec/60° This is a tough little...

Here is a powerful, low-cost, reliable servo for all your mechatronic needs. This servo is able to take in 6 volts and deliver 83.47 oz-in. of maximum torque at 0.16 sec/60° This is a tough little servo with a standard 3 pin power and control cable, and all hardware listed below. Replaces:ROB-9064 Includes: 1x FS5106B High Torque Servo 1x Double Arm Horn 1x Circle Horn 1x Four Point Horn 1x Six Point Horn 2x 3x10mm Phillips Screw 4x 2x13mm Mounting Phillips Screw 4x Rubber Grommets 4x Brass...

Here, for all your mechatronic needs, is a simple, high quality continuous rotation servo motor. This servo is able to take in 6 volts and deliver 66.7 oz-in. of maximum torque at 70 r/min. A...

Here, for all your mechatronic needs, is a simple, high quality continuous rotation servo motor. This servo is able to take in 6 volts and deliver 66.7 oz-in. of maximum torque at 70 r/min. A standard 3-pin power and control cable is attached and all hardware listed below is included. Includes: 1x SM-S4303R High Torque Continuous Rotation Servo 1x Mounting Screw 1x Four Point Horn 1x Six Point Horn 2x Double Arm Horn (1x Large, 1x Medium) 2x Circle Horn (1x Large, 1x Medium) 4x Rubber...

"Here is a simple, low-cost, high quality servo for all your mechatronic needs. This servo is able to take in 6 volts and deliver 44.4 oz-in. of maximum torque at 0.18 sec/60° This is a small...

"Here is a simple, low-cost, high quality servo for all your mechatronic needs. This servo is able to take in 6 volts and deliver 44.4 oz-in. of maximum torque at 0.18 sec/60° This is a small servo with a standard 3 pin power and control cable (red = power, brown = ground, and yellow = data), and all hardware listed below. Features: Voltage: 4.8-6.0 Volts Torque: 38.8/44.4 oz-in. (4.8/6.0V) Speed: 0.20/0.18 sec/60° (4.8/6.0V) Rotation: 180° Dual Ball Bearing Metal Gears...

This is the classic Hitec HS-422 servo. This solid consumer grade servo is able to take in 6 volts and deliver 57 oz-in. of maximum torque at 0.16 sec/60°, this is a simple servo for any beginner...

This is the classic Hitec HS-422 servo. This solid consumer grade servo is able to take in 6 volts and deliver 57 oz-in. of maximum torque at 0.16 sec/60°, this is a simple servo for any beginner project! This high quality servo is perfect for your mechatronic needs and if you are looking to get into robotics, this is where to start. The HS-422 servo comes standard with a 3-pin power and control cable and all hardware listed below. Includes: 1x HS-422 Servo 1x Circle Horn 1x Double Arm Horn 1x...

The SN74HC595N is a simple 8-bit shift register IC. Simply put, this shift register is a device that allows additional inputs or outputs to be added to a microcontroller by converting data between...

The SN74HC595N is a simple 8-bit shift register IC. Simply put, this shift register is a device that allows additional inputs or outputs to be added to a microcontroller by converting data between parallel and serial formats. Your chosen microprocessor is able to communicate with the The SN74HC595N using serial information then gathers or outputs information in a parallel (multi-pin) format. Essentially it takes 8 bits from the serial input and then outputs them to 8 pins. This small DIP...

These skate wheel adaptors have a diameter of 1”, a width of 0.32”, and utilize the 0.77” hub pattern. These adaptors allow you to attach the 2.975” or 4.90” skate wheels to ¼” drive shafts....

These skate wheel adaptors have a diameter of 1”, a width of 0.32”, and utilize the 0.77” hub pattern. These adaptors allow you to attach the 2.975” or 4.90” skate wheels to ¼” drive shafts. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected together. The wide range of components makes building complex...

These are very thin variable potentiometers. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate...

These are very thin variable potentiometers. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the strip. Can be used as an accurate positional indicator for CNC head positioning, variable user input (volume level input for example), straight user input (multiple button areas translate to given resistance levels), and many other applications. Unit comes with adhesive...

This is your basic spool of lead free solder with a water soluble resin core. 0.031" gauge and 100 grams. This is a good spool for more advanced users that should last 6-12 months depending on how...

This is your basic spool of lead free solder with a water soluble resin core. 0.031" gauge and 100 grams. This is a good spool for more advanced users that should last 6-12 months depending on how often you solder. If you are just beginning to solder, we recommend you order the leaded solder. Lead-free solder is a bit harder to use (does not flow as well). Mix: 99.3% Sn / 0.7% Cu Documents: MSDS ...

This is your basic tube of unleaded (Pb-free) solder with a no clean, water soluble resin core. 0.031" gauge and 15 grams. Mix: 96.5% tin / 3.0% silver / 0.5% copper

This is your basic tube of unleaded (Pb-free) solder with a no clean, water soluble resin core. 0.031" gauge and 15 grams. Mix: 96.5% tin / 3.0% silver / 0.5% copper