Electronics and STEM

The eTape Liquid Level Sensor from Milone Technologies is a great way to measure the level of a liquid. It has a resistive output that varies with the level of the fluid. It does away with clunky...

The eTape Liquid Level Sensor from Milone Technologies is a great way to measure the level of a liquid. It has a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. The sensor's envelope is compressed by the hydrostatic pressure of the fluid in which it is immersed. This results in a change in resistance that corresponds to the distance from the top of the sensor to the surface of the...

Do you have some liquids that you need to move? This fluid pump will move 350 gallons per hour! The SEAFLO mini water pump has a heavy duty 12V, 1.5Amp motor and a tough thermoplastic body. It's...

Do you have some liquids that you need to move? This fluid pump will move 350 gallons per hour! The SEAFLO mini water pump has a heavy duty 12V, 1.5Amp motor and a tough thermoplastic body. It's totally submersible and water-cooled (but it won't burn out if run dry). Use this pump to make a fountain or waterfall, even water your plants! The 3/4" connection will accept a 19mm ID hose. It comes pre-terminated with heavy gauge unterminated 3ft long wire leads. Features: 12V operation 350 GPH 1.5A...

      This linear ball bearing is intended to slide along an M8 linear shaft. They are used in all RepRap (Prusa i3) and other 3D printers for X / Y Axis Movements. Features 24mm long...

      This linear ball bearing is intended to slide along an M8 linear shaft. They are used in all RepRap (Prusa i3) and other 3D printers for X / Y Axis Movements. Features 24mm long x 15mm outer diameter x 8mm inner diameter

This straight bar load cell (sometimes called a strain gauge) can translate up to 10kg of pressure (force) into an electrical signal. Each load cell is able to measure the electrical resistance that...

This straight bar load cell (sometimes called a strain gauge) can translate up to 10kg of pressure (force) into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response to, and proportional of, the strain (e.g. pressure or force) applied to the bar. With this gauge you will be able to tell just how heavy an object is, if an object's weight changes over time, or if you simply need to sense the presence of an object by measuring strain or load...

This load sensor, sometimes called a strain gauge, is the same one found in digital bathroom scales (you know, the ones you use in January for your New Year's resolutions, and then forget about a...

This load sensor, sometimes called a strain gauge, is the same one found in digital bathroom scales (you know, the ones you use in January for your New Year's resolutions, and then forget about a month later). This sensor can measure up to about 110 pounds. Check the video below for a simple explanation on how these work and how to use them. Documents: Specifications Getting Started with Load Cells HX711 Breakout Hookup Guide Load Sensor Tutorial (NerdKits) ...

This is your standard fridge magnet, perfect for holding up quite a bit of weight. Grade C8, ceramic disk magnet. Magnetization is throughout the thickness of the magnet. We used this part with the...

This is your standard fridge magnet, perfect for holding up quite a bit of weight. Grade C8, ceramic disk magnet. Magnetization is throughout the thickness of the magnet. We used this part with the SparkFun flame kits found at our various workshops. Attachable with double stick tape or hot-glue. Features: BrMax: 3850 Gauss Pull Force: 1.5 lbs. 0.709x0.197"

The mbed microcontroller is an ARM processor, a comprehensive set of peripherals and a USB programming and communication interface provided in a small and practical DIP package. The mbed is a...

The mbed microcontroller is an ARM processor, a comprehensive set of peripherals and a USB programming and communication interface provided in a small and practical DIP package. The mbed is a super-easy-to-use rapid prototyping tool built on industry standard technology. The mbed Microcontroller is made for prototyping, and comes in a 40-pin 0.1" pitch DIP form-factor so it's ideal for experimenting on breadboards, stripboards and PCBs. It supports lots of interfaces including USB, SPI, I2C...

Description: Mbits is a pocket-sized microcontroller that has lots of features the same as Microbit V2. Mbits is an ESP32-WROVER-B based educational hardware suitable for kids to learn how to...

Description: Mbits is a pocket-sized microcontroller that has lots of features the same as Microbit V2. Mbits is an ESP32-WROVER-B based educational hardware suitable for kids to learn how to program and experience hot topics such as IoT and AI. The Mbits board is 52*52mm in size. Continues the style of the edge connector on the bottom of the BBC Micro: bit. If you already own Micro: bit expansion boards. Mbits is compatible with Micro: bit expansion boards, which enabling users to easily...

This is a metal DC geared motor, 99:1 metal reducer. It has a small size and large torque. The maximum torque could arrive 2.5 kg.cm. It is stable and durable!|Specification|Rated Voltage: 6...

This is a metal DC geared motor, 99:1 metal reducer. It has a small size and large torque. The maximum torque could arrive 2.5 kg.cm. It is stable and durable!|Specification|Rated Voltage: 6 VOperating Voltage Range 2~7.5VGear reduction ratio: 99:1Gearbox length: 23 mm"D" shape shaft diameter: 4 mmNo-load speed: 15 RPM @ 6VNo-load current: 50 mA Locked-rotor torque: 2.5 Kg.cmLocked-rotor current: 0.6 AOperating Temperature: -20?60?Weight: 72 g|ShippingList|Metal DC Geared Motor - 6V 15RPM...

This is a high quality metal servo horn. It fits Hitec standard servos, DF series servos and the Uptech CDS 5500 Servo.|Specification| Outside diameter: 20mm(0.79") Center hole diameter: 3mm(0.12")...

This is a high quality metal servo horn. It fits Hitec standard servos, DF series servos and the Uptech CDS 5500 Servo.|Specification| Outside diameter: 20mm(0.79") Center hole diameter: 3mm(0.12") Mounting holes: M3 Weight: 2g|Documents| Dimensions|ShippingList| Metal servo horn x1

This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas...

This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm. This sensor has a high sensitivity and fast response time. The sensor's output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC. This sensor...

This is the Micro Gripper Kit B, a simple robotics kit that is great for "getting a grip" on smaller robotics projects! Designed for use with any sub-micro size Hitec servo, the gripper kit is easy...

This is the Micro Gripper Kit B, a simple robotics kit that is great for "getting a grip" on smaller robotics projects! Designed for use with any sub-micro size Hitec servo, the gripper kit is easy to assemble and requires only a Phillips Head Screwdriver. This Micro Gripper is capable of opening 2.75" wide max, has an overall body dimension of 2.6" long by 1.3" wide, and offers the 0.77" hub pattern for easy mounting on Actobotics components. Actobotics is a robotics building system based...

Playing game with your Micro: bit sounds cool, we make this gamer shield for you to relax yourself. Besides game, you can also DIY your robot, and control your own robot with this handle. There are...

Playing game with your Micro: bit sounds cool, we make this gamer shield for you to relax yourself. Besides game, you can also DIY your robot, and control your own robot with this handle. There are five buttons and XY joystick on this handle that can make you control your robot or play game easier. Specifications Working voltage: 3v The interface of X joystick: P0 The interface of Y joystick: P1 The interface of 5 buttons: P2 Installation Method Install the countersunk head screw on the side...

This is a GPIO expansion board for Micro: bit, it?s convenient to operate. It can be inserted the expansion board directly into the Micro: bit, and this expansion board can be cascaded....

This is a GPIO expansion board for Micro: bit, it?s convenient to operate. It can be inserted the expansion board directly into the Micro: bit, and this expansion board can be cascaded. Specifications Size: 64 x 37 x 12 mm Package list Micro: bit GPIO expansion board x 1 ...

The BBC micro:bit v2 is a pocket-sized computer that lets you get creative with digital technology. Each order contains just the micro:bit v2 board. You can code, customize and control your...

The BBC micro:bit v2 is a pocket-sized computer that lets you get creative with digital technology. Each order contains just the micro:bit v2 board. You can code, customize and control your micro:bit from anywhere! You can use your micro:bit for all sorts of unique creations, from robots to musical instruments and more. At half the size of a credit card, you will be surprised at the amount of hardware each board is equipped with, including 25 red LED lights that can flash messages. There are...

The BBC micro:bit v2 is a pocket-sized computer that lets you get creative with digital technology. Each order contains just the micro:bit v2 board. You can code, customize and control your...

The BBC micro:bit v2 is a pocket-sized computer that lets you get creative with digital technology. Each order contains just the micro:bit v2 board. You can code, customize and control your micro:bit from anywhere! You can use your micro:bit for all sorts of unique creations, from robots to musical instruments and more. At half the size of a credit card, you will be surprised at the amount of hardware each board is equipped with, including 25 red LED lights that can flash messages. There are...

Microsoft and SparkFun have teamed up to bring you some IoT (Internet of Things) fun. The Microsoft Azure IoT Starter Kit for the SparkFun Thing Development Board has been designed to help you...

Microsoft and SparkFun have teamed up to bring you some IoT (Internet of Things) fun. The Microsoft Azure IoT Starter Kit for the SparkFun Thing Development Board has been designed to help you seamlessly connect your device to the cloud with Microsoft Azure IoT. This kit includes an 'Azure certified for IoT' SparkFun Thing Dev Board, and a breadboard and wires to help you set up your circuits. There are also a variety of sensors such as a photoresistor to sense light as well as a...

This is an inexpensive 3-foot-long HDMI to Mini HDMI cable that you can use to hook up your Raspberry Pi Zero W to a suitable monitor or TV. Heck, you can hook up anything you want with it! Mini...

This is an inexpensive 3-foot-long HDMI to Mini HDMI cable that you can use to hook up your Raspberry Pi Zero W to a suitable monitor or TV. Heck, you can hook up anything you want with it! Mini HDMI is not that common of a medium right now, but in the interest of saving space it can come in handy! Documents: Dimensional Drawing

This is a very small light sensor. A photocell changes (also called a photodetector, photo resistor, CdS or photoconductive cell) resistance depending on the amount of light it is exposed to. These...

This is a very small light sensor. A photocell changes (also called a photodetector, photo resistor, CdS or photoconductive cell) resistance depending on the amount of light it is exposed to. These little sensors make great ambient light triggers (when light in the room turns on, do something). Features: Light resistance : ~1k Ohm Dark resistance : ~10k Ohm Max voltage : 150V Max power: 100mW* 2 x 4 x 5mm 4mm between pins 31mm lead length Documents: Datasheet Hookup Guide Bildr Tutorial Videos ...

Simple SPDT slide switch. Rated at 30V/200mA. The pins have .1" spacing - fits great into a breadboard! Use it as a power switch or general control switch. Documents: Dimensional Drawing ...

Simple SPDT slide switch. Rated at 30V/200mA. The pins have .1" spacing - fits great into a breadboard! Use it as a power switch or general control switch. Documents: Dimensional Drawing

We use these little buttons on everything! These Miniature Single Pole Single Throw switches have a good click to them and are breadboard friendly. Perfect as a tactile reset switch. These momentary...

We use these little buttons on everything! These Miniature Single Pole Single Throw switches have a good click to them and are breadboard friendly. Perfect as a tactile reset switch. These momentary buttons are rated up to 50mA. Documents: Dimensional Drawing (NEEDS UPDATE! COMING SOON!)

MiniMoto - DRV8830 Breakout Description: The MiniMoto is a great little breakout for the DRV8830 I2C DC motor driver. The MiniMoto is great for driving most small robotics. With an operating...

MiniMoto - DRV8830 Breakout Description: The MiniMoto is a great little breakout for the DRV8830 I2C DC motor driver. The MiniMoto is great for driving most small robotics. With an operating voltage range of 2.7V to 6.8V and a current limit of 1A the DRV8830 is a versatile little driver.  In addition to the benefit of being controlled via I2C, which frees up data lines and processing on the CPU to be used for other tasks, the MiniMoto has the lowest voltage output capability...

This is a standard 12mm square momentary button. What we really like is the large button head and good tactile feel (it 'clicks' really well). This button is great for user input on a PCB or a good,...

This is a standard 12mm square momentary button. What we really like is the large button head and good tactile feel (it 'clicks' really well). This button is great for user input on a PCB or a good, big reset button on a breadboard. Breadboard friendly!

Motor Mount Description: Our Mini Metal Gearmotors are great for small robots but they can be hard to mount. Luckily, our brilliant Ministry of Machinery has spun up these plastic motor mounts....

Motor Mount Description: Our Mini Metal Gearmotors are great for small robots but they can be hard to mount. Luckily, our brilliant Ministry of Machinery has spun up these plastic motor mounts. Simply bolt the mount to the faceplate of the motor and screw the mount down to your chassis and you're ready to roll! Note: These are sold in singles. If you need a pair, you will need to buy two of them. No additional hardware is included. Documents: Dimensional Drawing ...

Make some noise with your next project! The MP3 Trigger board is built to make MP3 sound integration easier than ever. The board has 18 external trigger pins that will directly trigger pre-selected...

Make some noise with your next project! The MP3 Trigger board is built to make MP3 sound integration easier than ever. The board has 18 external trigger pins that will directly trigger pre-selected MP3 tracks, and a full-duplex serial control port that provides full transport control, remote triggering for up to 256 tracks, and fast real-time volume control. MP3s are stored on FAT16 formatted SDSC or FAT32 formatted SDHC micro-SD flash memory cards. In addition, optimized code can achieve...

    The MQ5 Gas Sensor module is useful for gas leakage detecting. It can detect LPG, i-butane, methane, alcohol, Hydrogen, smoke and so on. The sensitivity can be adjusted using...

    The MQ5 Gas Sensor module is useful for gas leakage detecting. It can detect LPG, i-butane, methane, alcohol, Hydrogen, smoke and so on. The sensitivity can be adjusted using the on-board potentiometer, and you'd use this sensor by reading the analog pin to which it is connected. Please use these sensors only in controlled experiments! Combustible gases and fumes are very dangerous! Here are details for some MQ gas sensor. SysmbolMQ-2MQ-3MQ-5MQ-9Detect GasCombustible...

MT7681 contains high speed processor, the CPU can be used by the customer, without external microcontroller to achieve data transmission. There are dozens of K application space FALSH can use, more...

MT7681 contains high speed processor, the CPU can be used by the customer, without external microcontroller to achieve data transmission. There are dozens of K application space FALSH can use, more than 10 K RAM idle, peripheral 5 IO port and serial port can be feel free to call. Internal MT7681 code, need to call a few TCP UDP function, can complete the link of data sending and receiving function. At present this module source code is to demonstrate MT7681 internal CPU and the whole process...

The MyoWare® 2.0 Reference Cable is meant as an extension for the MyoWare 2.0 Muscle Sensor's reference pin. You will just need to insert the pin into its housing and place a biomedical sensor pad...

The MyoWare® 2.0 Reference Cable is meant as an extension for the MyoWare 2.0 Muscle Sensor's reference pin. You will just need to insert the pin into its housing and place a biomedical sensor pad into the electrode snap. When ready, stick the reference cable's snap pin to a separate section of the body such as a bony portion of the elbow or a nonadjacent muscle near a targeted muscle where the MyoWare 2.0 Muscle Sensor's built-in reference pin is unable to reach. Note: The reference electrode...

The Arduino Nano I/O Sensor Shield acts as an expansion board for the Arduino Nano and DFRduino Nano microcontrollers. There are several different options for power input. The form factor of the...

The Arduino Nano I/O Sensor Shield acts as an expansion board for the Arduino Nano and DFRduino Nano microcontrollers. There are several different options for power input. The form factor of the Nano I/O Shield board is the same as the Arduino UNO/arduino Leonardo. In addition, the sensor shield adopts Gravity interface that each pinout includes 5V and GND pins for easy connection to Gravity sensors or servos. To the best compatibility, the shield supports jumper wires for rapid prototyping....

Mini Pliers. These are great little pliers! A must have for any hobbyist or electrical engineer. Crucial for inserting devices into bread boards and bending pins. 4" long.

Mini Pliers. These are great little pliers! A must have for any hobbyist or electrical engineer. Crucial for inserting devices into bread boards and bending pins. 4" long.

    NFC(Near Field Communication) is a set of standards for smartphones and similar devices to establish radio communication with each other by touching them together or bringing...

    NFC(Near Field Communication) is a set of standards for smartphones and similar devices to establish radio communication with each other by touching them together or bringing them into close proximity , it builds upon RFID systems by allowing two-way communication between endpoints. Compared with the Bluetooth, which is also short-range communication technology, NFC operates at slower speeds, but consumes far less power and doesn?t require pairing.    &nbs...

NL6621M is a highly integrated SOC, especially for the low-cost high data throughput wireless LAN products and designs. It integrates MCU, MAC, 1T1R baseband and RF transceiver with power amplifier...

NL6621M is a highly integrated SOC, especially for the low-cost high data throughput wireless LAN products and designs. It integrates MCU, MAC, 1T1R baseband and RF transceiver with power amplifier on a single chip NL6621M support 802.11b / g / n and Wi-Fi direct (SDIO card mode), BSS STA, soft AP, WiFi Protected Setup. It also supports WMM-PS and WPA / WPA2 security protocol. NL6621M not only for controlling by the host processor from the device but also can be used as standalone WLAN...

    This is a platform using the ATMEGA48 to help you using the NRF24L0 Module easily. It uses the I2C (TWI) communication protocol to communicate with other controller such as...

    This is a platform using the ATMEGA48 to help you using the NRF24L0 Module easily. It uses the I2C (TWI) communication protocol to communicate with other controller such as the Arduino thus to simplify the NRF24L01 communication. With this module, you do not need to understand the tedious communication process of NRF24L01 anymore, building NRF24L01 wireless application would be much easily. Also Demo on Arduino platform would help you learning how to use this module in...

We could talk about how the Zinc used in these nuts is only from the finest old-growth Zinc trees from across the globe and is hand picked only at the peak of the season. Or how they are expertly...

We could talk about how the Zinc used in these nuts is only from the finest old-growth Zinc trees from across the globe and is hand picked only at the peak of the season. Or how they are expertly hand-ground by a 6th generation master grinder. And how every nut passes a rigorous 19-point inspection process at each step of the process. And how each nut's dimensional variations can only be measured on the sub-atomic level. We could say all that, but it would be a lie. These are standard 4-40...

"Description: These are standard locknuts with 4-40 thread. For use with 4-40 machine screws. They have a nylon insert that allows them to stay tightly in place. Note: These come in packs of 10." ...

"Description: These are standard locknuts with 4-40 thread. For use with 4-40 machine screws. They have a nylon insert that allows them to stay tightly in place. Note: These come in packs of 10."

Nylon Nut - 4-40 Description: Sometimes you need to fasten something down with a nut, but don't want to worry about shorting anything. A nylon nut can save you the hassle of shorting out the...

Nylon Nut - 4-40 Description: Sometimes you need to fasten something down with a nut, but don't want to worry about shorting anything. A nylon nut can save you the hassle of shorting out the ground plane on a PCB without enough spacing around the mounting hole. Sold as single units.