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DescriptionCherry MX Keyswitches are top-of-the-line mechanical keyboard switches. They're satisfyingly "clicky"， reliable up to tens-of-millions of key presses， and a standard in gaming and programming keyboards across the globe. With the SparkFun Cherry MX Switch Breakout we have made the switches more easily adaptable to breadboard or perfboard-based projects. The Cherry MX Switch Breakout is a perfect prototyping tool for projects ranging from a single-key user-input to fully-custom 101-key keyboards.In addition to breaking out the switch contacts to breadboard-compatible headers， the Cherry MX Switch Breakout also provides access to an optional switch-mounted LED. Plus， the pin break-outs are designed with keyboard matrix-ing in mind， so you can interconnect as many boards as you'd like into a row-column configuration， keeping the I/O-pin requirements as low as possible.Note：If you are looking for a Cherry MX Switch to use with this breakout， we've got you covered! CLICK HERE!Get Started with the Cherry MX Switch GuideFeaturesSupport for 3mm LEDFootprint for LED current-limiting resistorFootprint for switch-isolating diodeChain-able in row/column matricesDesigned to match standard key spacing and keyboard row offsets

DescriptionThe CD40106BE consists of six Schmitt-trigger circuits. Each circuit functions as an inverter with Schmitt-trigger action on the input. The trigger switches at different points for positive- and negative-going signals. The difference between the positive-going voltage(VP)and the negative-going voltage(VN)is defined as hysteresis voltage(VH).FeaturesSchmitt trigger action with no external componentsHysteresis voltage typ. at 0.9V at VDD = 5V， 2.3V at VDD = 10V， and 3.5V at VDD = 15VNoise immunity greater than 50%No limit on input rise and fall timesStandardised， symmetrical output characteristics100% tested for quiescent current at 20sVMaximum input current of 1μA at 18 V over full package temperature range； 100nA at 18V and 25℃Low VDD to VSS current during slow input ramp

DescriptionRotary encoders can be used similarly to potentiometers. The difference being that an encoder has full rotation without limits(It just goes round and round). They output 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. This version has an updated material that is heat resistant and slightly changed dimensions， but should still work well with our rotary encoder breakout board.FeaturesSwitch Travel：0.5mmShaft Diameter：6.0mmShaft Length：18mmVertical Through-Hole Mount24 Pulses per RotationRed/Green/Blue LEDPushbutton

DescriptionWho doesn't occasionally need power regulation? We certainly do， so we've designed the SparkFun BabyBuck Regulator Breakout to help us with just such a task. Featuring the AP63203 from Diodes Inc， this breakout board takes advantage of a 2A synchronous buck converter that has a wide input voltage range of 3.8V to 32V and fully integrated 125mΩ high-side power MOSFET/68mΩ lowside power MOSFET to provide high-efficiency step-down DC/DC conversion. All of this snuggled up in a low-profile， TSOT26 package that's integrated into a 0.4in by 0.5in board.Unlike it's sibling， the BabyBuck sacrifices power option flexibility for space. Don't worry， though， because you can still use the plated through holes for input and output power. With some simple right-angle headers， you'll be up and running in no time.Frequency Spread Spectrum(FSS)reduces EMI and a proprietary gate driver scheme resists switching node ringing without sacrificing MOSFET turn-on and turn-off times， which further erases high-frequency radiated EMI noise.Get Started with the SparkFun Buck Regulator Hookup GuideFeaturesLow-Profile FootprintVIN 3.8V to 32VVOUT 3.3VUp to 2A Continuous Output Current0.8V ± 1% Reference Voltage22μA Ultralow Quiescent CurrentSwitching Frequency - 1.1MHzSupports Pulse Frequency Modulation(PFM)Up to 80% Efficiency at 1mA Light LoadUp to 88% Efficiency at 5mA Light LoadFixed Output Voltage - 3.3VProprietary Gate Driver Design for Best EMI ReductionFrequency Spread Spectrum(FSS)to Reduce EMIPrecision Enable Threshold to Adjust UVLOProtection CircuitryOvervoltage ProtectionCycle-by-Cycle Peak Current LimitThermal Shutdown

DescriptionThe Hologram eUICC SIM Card is a mix between legacy and new technology when cellular service is needed your project. This eUICC SIM Card enables profile switching capabilities so you can dynamically change the subscriber profile while your chosen devices are in the field， over-the-air. For those looking for IoT cellular service with no intentions on switching cellular carriers， this SIM card is for you.eUICC features are limited to certain modules at this point. This includes the u-blox SARA-R4 module used on our SparkFun LTE CAT M1/NB-IoT Shield - SARA-R4. For these situations， the functionality will be that of a normal SIM with cellular service through Hologram. You won't be able to change carriers.FeaturesTemperature Range：-25C to 85CNano SIM 8.8mm x 12.3mmMinimum 500，000 Read/write cyclesMinimum 25 yrs at 25℃ Data retention

DescriptionThe LilyPad Sewable Electronics Kit lets you explore the wonderful world of electronic sewing(e-sewing)and e-textiles through a series of introductory projects using the LilyPad system. You'll learn how to sew basic circuits to light up LEDs， control them with buttons and switches and even experiment with a pre-programmed LilyMini circuit that reacts to ambient light levels. In addition to LilyPad LEDs and battery holders， the kit comes with two LilyPad ProtoSnap boards that let you explore the circuit before you sew the pieces into a project.The full-color LilyPad Sewable Electronics Kit Guide(included)contains step-by-step instructions for using LilyPad pieces to create four complete sewable circuit projects with conductive thread. Easy-to-follow diagrams and troubleshooting tips make this a great introductory resource for crafters and creatives.LilyPad is a wearable technology developed by Dr. Leah Buechley and cooperatively designed by Dr. Buechley and SparkFun. Each LilyPad component was creatively constructed with large sew tabs to allow for stitching into clothing. Various input， output， power and sensor boards are available. They're even washable!Note：A portion of this sale is given back to Dr. Buechley for continued development and education in e-textiles.Note：Due to the requirements of shipping the batteries in this kit， orders may take longer to process and therefore do not qualify for same-day shipping. Additionally， these batteries can not be shipped via Ground or Economy methods to Alaska or Hawaii. Sorry for any inconvenience this may cause.ExamplesSewable Electronics Projects：Project 1：Glowing PinProject 2：Illuminated MaskProject 3：Light-Up PlushProject 4：Night-Light Pennant