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Description。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 a square wave(e.g. from a microcontroller).

。Description。The SparkFun Inventor's Kit(SIK)for Arduino Uno is a great way to get started with programming and hardware interaction with the Arduino programming language. The SIK includes everything you need to complete five overarching projects consisting of 16 interconnected circuits that teach everything from blinking an LED to reading sensors. The culminating project is your very own autonomous robot! No previous programming or electronics experience is required to use this kit.。The online guide contains step-by-step instructions with circuit diagrams and hookup tables for building each project and circuit with the included parts. Full example code is provided， new concepts and components are explained at point of use， and troubleshooting tips offer assistance if something goes wrong.。The kit does not require any soldering and is recommended for beginners ages 10 and up who are looking for an Arduino starter kit. For SIK version 4.1 we took an entirely different approach to teaching embedded electronics. In previous versions of the SIK， each circuit focused on introducing a new piece of technology. With SIK v4.1， components are introduced in the context of the circuit you are building， and each circuit builds upon the last， leading up to a project that incorporates all of the components and concepts introduced throughout the guide. With new parts and a completely new strategy， even if you've used the SIK before， you're in for a brand-new experience!。This version of the SIK replaces the SparkFun RedBoard Qwiic with the Arduino Uno(SMD version)and comes without the SIK guidebook and carrying case. With these components being swapped and removed， we were able to reduce the overall size and weight of the kit， making shipping cheaper and easier for anyone ordering internationally.。Note：As stated above， this SIK does NOT include a carrying case or print guidebook.。Get Started With the SparkFun Inventor's Kit v4.1 Experiment Guide。Examples。Project 1：Light。Circuit 1A：Blinking an LED。Circuit 1B：Potentiometer。Circuit 1C：Photoresistor。Circuit 1D：RGB Night-Light。Project 2：Sound。Circuit 2A：Buzzer。Circuit 2B：Digital Trumpet。Circuit 2C："Simon Says" Game。Project 3：Motion。Circuit 3A：Servo Motors。Circuit 3B：Distance Sensor。Circuit 3C：Motion Alarm。Project 4：Display。Circuit 4A：LCD "Hello， World!"。Circuit 4B：Temperature Sensor。Circuit 4C："DIY Who Am I?" Game。Project 5：Robot。Circuit 5A：Motor Basics。Circuit 5B：Remote-Controlled Robot。Circuit 5C：Autonomous Robot

。Description。Passive Infrared(PIR)sensors are great for detecting motion in a small area around the sensor. The 170μA SparkFun EKMC4607112K PIR Breakout is a simple board equipped with an EKM-series PIR sensor from Panasonic(R). The EKM-series PIR sensors are optimized for small movements to offer motion-sensing options for continuously powered applications.。PIR sensors do not return specific distance data but instead monitor for IR light coming from objects in their field of view and will activate their signal when motion is detected in their sensing area， making them perfect for applications such as turning devices on automatically when motion is detected. Applications include home and building automation for energy saving， automated on/off lighting control， security， appliances， and IoT.。Panasonic's low-profile PIR motion sensors(10.9mm versus standard 14.4mm height offer space savings for constrained designs)consist of a lens to create various detection zones， an optical filter to block non-infrared light， pyroelectric sensing elements， electromagnetic shielding to all circuitry， and an impedance converter to get an electrical signal. This PIR sensor offers digital output across 32 zones at 5m detection distance with 90°×90° detection area.。Note：The sensitivity of passive infrared sensors is influenced by environmental conditions， so a performance evaluation test under representative conditions is recommended.。Get Started with the SparkFun PIR Breakout Guide。Features。Operating Voltage：2.3。-。4.0V。170 μA。standby current consumption。Lens diameter - 10.4mm。Lens Height - 10.9mm。5m detection distance。90°×90°(±45°)detection area

Description。Please note， these machines are built to order have an estimated lead time of 4 business days before shipping。This is the Shapeoko 4 XL， nearly double the cutting area of the Shapeoko 4 Standard! The Shapeoko is a 3-axis CNC Machine kit that allows you to create your 2D and 3D designs out of non-ferrous metals， hardwoods， and plastics. The Shapeoko 4 XL is designed to be affordable enough for any shop and powerful enough to do real work. Don't let the size intimidate you! This is an entry-level CNC machine designed for hobbyists， artists， and fabricators!。Each Shapeoko 4 XL has a cutting area of 838.2mm(X)x 444.5 mm(Y)x 101.6mm(Z)(33"×17.5"×4")and an overall footprint of 1270mm(X)x 609.6mm(Y)x 482.6mm(Z)(50"×24"×19"). The power cable included in this kit is designed for the United States National Plug Standard. Don't forget you can put whatever you want on the adapter ring(as long as it fits)， whether that's a laser， 3D print extrusion head， or a marker. Get creative!。Upgrades from the Shapeoko 3 include：New， more rigid v-wheel design。15mm belts。Inductive homing switches。New electronics。Integrated t-slot Hybrid Table(OPTIONAL)。Fully-supported Y extrusions。Leadscrew-driven Z-axis。New， more rigid 65mm router mount。Sweepy 65mm V2 dust boot。Note：This item is non-returnable. If this item arrives damaged or is not functioning properly， please do not hesitate to contact us to see if further actions may be taken.。Not Compatible with the Shapeoko 4：Expansion Packs。T-Track Clamp Kits。Z-Plus。Proximity Switch Kit。Maintenance Kit。Shapeoko 3 Bit Setter。HDZ 4.0。。Features。Footprint：1270mm×609.6mm×482.6mm(50"×24"×19")。Cutting Area：838.2mm×444.5mm×101.6mm(33"×17.5"×4")。Weight 137lbs.。Operating System：Mac(OSX 10.14 or higher)or PC(Windows 8.1 or 10， Intel or AMD)

。Description。USB-C is fantastic. What makes this cable even better is that one of the features we love so much about USB-C has been replicated to the USB-A 2.0 plug! These cables have minor， yet genius modifications that allow them to be plugged into their ports regardless of 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.。Until we have converted all our hubs， chargers， and ports over to USB-C this is the cable you're going to need for basic USB 2.0 connections. This cable is much thinner and flexible than its 3.1 counterpart and is perfect for USB to serial applications as well as for direct connection to basic microcontrollers.。This cable has the D+/D- wires along side large-gauge VBUS/GND wires. Rated for 2A， we've successfully pulled 2A@5V with minimal voltage drop. If you're looking for a the full USB-C implementation checkout our USB 3.1 cable.。Features。Reversible USB-A connector。Reversible USB-C connector

Description。USB-C is fantastic. What makes this cable even better is that one of the features we love so much about USB-C has been replicated to the USB-A 2.0 plug! These cables have minor， yet genius modifications that allow them to be plugged into their ports regardless of 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.。Until we have converted all our hubs， chargers， and ports over to USB-C this is the cable you're going to need for basic USB 2.0 connections. This cable is much thinner and flexible than its 3.1 counterpart and is perfect for USB to serial applications as well as for direct connection to basic microcontrollers.。This cable has the D+/D- wires along side large-gauge VBUS/GND wires. Rated for 2A， we've successfully pulled 2A@5V with minimal voltage drop. If you're looking for a the full USB-C implementation checkout our USB 3.1 cable.。Features。Reversible USB-A connector。Reversible USB-C connector

Description。USB-C is fantastic. What makes this cable even better is that one of the features we love so much about USB-C has been replicated to the USB-A 2.0 plug! These cables have minor， yet genius modifications that allow them to be plugged into their ports regardless of 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.。Until we have converted all our hubs， chargers， and ports over to USB-C this is the cable you're going to need for basic USB 2.0 connections. This cable is much thinner and flexible than its 3.1 counterpart and is perfect for USB to serial applications as well as for direct connection to basic microcontrollers.。This cable has the D+/D- wires along side large-gauge VBUS/GND wires. Rated for 2A， we've successfully pulled 2A@5V with minimal voltage drop. If you're looking for a the full USB-C implementation checkout our USB 3.1 cable.。Features。Reversible USB-A connector。Reversible USB-C connector