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。Description。The SparkFun 2D Barcode Scanner Breakout is a nifty little breakout board featuring the DE2120 barcode scanner module from DYScan. The DE2120 reads 20 different barcode symbologies(both 1D and 2D)using a camera coupled with on-board image processing to identify and decode everything from UPC codes to QR codes. The module also features two LEDs：one for illumination and one to project the red line that you're used to seeing from laser-based scanners.。This breakout board makes it easy to explore all of the capabilities of the DE2120 without dealing with finicky flat flex cables. The scanner's USB interface is exposed via the on-board USB-C connector. A buzzer and status LED are connected to the module through appropriate drive circuits and a push button tactile switch is provided on the "trigger" pin. When you're ready to incorporate the module into your embedded project， you can leverage the 5 pin header for direct access to the TTL serial pins， power pins， and trigger input.。The module can be configured either by using the serial interface or by scanning command barcodes found in the Settings Manual.。All keyboard， HID， and serial can be transmitted over the single USB-C connector. The DE2120 has the unique ability to enumerate all three protocols including a CDC serial driver so the device appears as a standard COM port.。Get Started with the 2D Barcode Scanner Breakout Hookup Guide。Features。USB-C Connector for USB HID Interface and Virtual COM port。Reads 20 different symbologies。1D Symbologies。UPC-A。UPC-E。EAN-8。EAN-13。Code 128。GS1-128。Code 39。Code 93。Code 11。Interleaved 2-of-5。Matrix 2-of-5。Industrial 2-of-5。Codabar。MSI。GS1 DataBar。Datalogic 2-of-5。2D Symbologies。QR Code。Data Matrix。PDF 417。Micro PDF 417。Aztec Code

Description。The SparkFun Qwiic Quad Relay is a unique power accessory board that has been designed for switching not one but four high powered devices from your Arduino or another low powered microcontroller using I2C. Taking a look at the board， the Quad Relay has four individual relays rated up to 5 Amps per channel at 250VAC or 30VDC. Each channel also has its own uniquely colored LED， silk for easy identification， and screw terminals for optional connection. Utilizing our handy Qwiic system， no soldering is required to connect it to the rest of your system!。At the heart of the SparkFun Qwiic Quad Relay is an ATtiny84 that takes various commands to toggle the four relays. The I2C address of the ATtiny84A is software configurable so if you had the desire and power， you could daisy chain over 100 Qwiic Quad Relays. There is also a header that breaks out the four I2C lines if you're not taking advantage of the Qwiic connectors. And last up， the barrel jack is rated for wall adapters in the range 7-12V but we have equipped this relay board with a jumper on the underside of the board if you want to use wall adapters at 5V.。Messing with such high voltage is dangerous! We've included many safety precautions onto the PCB including， wide traces designed for high amperage， ground isolation between the relay and other circuitry， and a milled out area around the common pin of the relay. However， with all the safety precautions included with the SparkFun Qwiic Quad Relay， this is still a power accessory for users who are experienced around， and knowledgeable about high AC voltage. If that's not quite your jam， that's okay! Check out the IoT Power Relay， instead， to start learning how to use power relays easily!。The SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the SparkFun Qwiic Quad Relay Guide。Features。Four JZC-11F Relays。5A at 250VAC， 30VDC。Each relay has its own colored LED and silk labels for easy identification.。Safey Features。Ground pour isolated from relays.。Air gap around common pin on the relays.。Large trace width on relay pins far exceeding the peak 5A current.。ATtiny84A。I2C commands for toggling individual relays or all the relays at once.。I2C commands for turning all relays off or on.。Two I2C addresses。0x6D(Default)。0x6C。I2C address is software configurable.。All commands are listed in the example code.。Screw Terminals。26-14 Gauge AWG wire。Power。Max Current Draw ～250mA。Vin via Barrel Jack。7V to 12V。Vin via Barrel Jack w/ Bypass Jumper Closed。5V。Revision Changes：。The latest revision includes the following updates.。Included a normally closed jumper for the power LED.。Switching regulator in place of a linear regulator.。The switching regulator is much more efficient； no external cooling needed when powering four relays at once.。Improved circuitry around the relays.。An issue where relays on certain boards in v1.0 didn't switch completely when actuated has been resolved.

。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