The Kynix Blog

Instead of ordering batteries by the pack, we might get them by the ream in the future. Researchers at Binghamton University, State University of New York have created a bacteria-powered battery on a single sheet of paper that can power disposable electronics. The manufacturing technique reduces fabrication time and cost, and the design could revolutionize the use of bio-batteries as a power source in remote, dangerous and resource-limited areas."Papertronics have recently emerged as a simple and low-cost way to power disposable point-of-care diagnostic sensors," said Assistant Professor Seokheun "Sean" Choi, who is in the Electrical and Computer Engineering Department within the Thomas J. Watson School of Engineering and Applied Science. He is also the director of the Bioelectronics and Microsystems Lab at Binghamton."Stand-alone and self-sustained, paper-based, point-of-care devices are essential to providing effective and life-saving treatments in resource-limited settings," said Choi.On one half of a piece of chromatography paper, Choi and PhD candidate Yang Gao, who is a co-author of the paper, placed a ribbon of silver nitrate underneath a thin layer of wax to create a cathode. The pair then made a reservoir out of a conductive polymer on the other half of the paper, which acted as the anode. Once properly folded and a few drops of bacteria-filled liquid are added, the microbes' cellular respiration powers the battery. "The device requires layers to include components, such as the anode, cathode and PEM (proton exchange membrane)," said Choi. "[The final battery] demands manual assembly, and there are potential issues such as misalignment of paper layers and vertical discontinuity between layers, which ultimately decrease power generation."Different folding and stacking methods can significantly improve power and current outputs. Scientists were able to generate 31.51 microwatts at 125.53 microamps with six batteries in three parallel series and 44.85 microwatts at 105.89 microamps in a 6x6 configuration.It would take millions of paper batteries to power a common 40-watt light bulb, but on the battlefield or in a disaster situation, usability and portability is paramount. Plus, there is enough power to run biosensors that monitor glucose levels in diabetes patients, detect pathogens in a body or perform other life-saving functions. "Among many flexible and integrative paper-based batteries with a large upside, paper-based microbial fuel cell technology is arguably the most underdeveloped," said Choi. "We are excited about this because microorganisms can harvest electrical power from any type of biodegradable source, like wastewater, that is readily available. I believe this type of paper biobattery can be a future power source for papertronics."The innovation is the latest step in paper battery development by Choi. His team developed its first paper prototype in 2015, which was a foldable battery that looked much like a matchbook. Earlier this year they unveiled a design that was inspired by a ninja throwing star.Reference:AFPG804TL-5276/WAFPX-BATT 

（Researchers have developed an algorithm that allows residential customers to share power from the renewable energy sources in their homes during an outage.） If you think you can use the solar panels on your roof to power your home during an outage, think again. During an outage, while your home remains connected to the grid, the devices that manage your solar panels are powered down for safety reasons. In other words, this permanent connection to the grid makes it impossible for homeowners to draw on power generated by their own renewable energy resources. A team of engineers at the University of California San Diego wants to change this. They have developed algorithms that would allow homes to use and share power from their renewable energy sources during outages by strategically disconnecting these devices, called solar inverters, from the grid. The algorithms work with existing technology and would improve systems' reliability by 25 to 35 percent. Researchers detail the algorithms and their applications in a paper they presented at the American Control Conference in Seattle, Wash. "We were inspired to start investigating a way to use renewable power during outages after Hurricane Sandy affected eight million people on the East Coast and left some without power for up to two weeks," said Abdulelah H. Habib, a Ph.D. candidate in mechanical engineering at UC San Diego and the paper's first author. Our Society is Dependent upon ElectricityJust a few hours without power can cause massive losses to both product and revenue.We rely on electricity much more than we realize. Even if you live "off the grid," as I did for years, you are still living in a world and a society that is deeply dependent upon electricity. If the power is out for a few hours, we have all experienced that; of course you'll be fine. Maybe you will be a little bored and inconvenienced, but if the outage is lengthy and widespread, the consequences can be much more severe, even deadly. What would happen if the electricity was out for a week?Every year, 7 million customers experience power outages. Outages that last more than 5 to 10 minutes cost customers more than $80 billion each year. How the Algorithm WorksThe innovation here is the algorithm's capability to prioritize distribution of power from renewable resources during an outage. The equations take into account forecasts for solar and wind power generation as well as how much energy storage is available, including electric vehicles, batteries and so on. The algorithm combines that information with the amount of energy that the residents are projected to use as well as the amount of energy that a cluster of homes can generate.The algorithm could also be programmed to include a priority function, based on different parameters. For example, customers who are willing to pay more could get priority to get power during an outage. Or customers who generate more energy than they produce during normal operations would not lose power during an outage. More importantly, the algorithm could give priority to customers who are in urgent need of power, because they use life support equipment, for example. Ref.KY605-LC-R064R5PKY605-0860-0004

A team of MIT engineers has described a novel way of controlling the flow of water in flexible tubes, a finding with implications for agricultural systems worldwide. Their research, published in the Journal of Mechanical Design, could reduce the energy demands of pulsating sprinklers used for irrigation."Food and its relationship to water is one of the biggest problems in the world," says Ruo-Qian Wang, a former postdoc at the MIT Tata Center for Technology and Design who is now a postdoc at the University of California at Berkeley. "There is a clear need for efficient irrigation technologies that save money and conserve resources."Wang co-authored the paper with three researchers in MIT's Department of Mechanical Engineering: graduate student Teresa Lin, PhD candidate and Tata Fellow Pulkit Shamshery, and Assistant Professor Amos Winter.The model they propose could be especially useful in developing countries, where many farmers cultivate small plots of land without reliable access to the electricity grid. These farmers rely on solar or diesel power to draw water for irrigation."If you bring down the energy requirements of the irrigation system, that means a farmer can buy a smaller solar panel, or use less diesel," Wang says. "Everything gets cheaper and more accessible."Compensating for pressureThe researchers focused on a device called a Starling resistor, which is a flexible tube that collapses as pressure is applied. This device is noted for its similarities to human respiration, and has been used to model flow in the lungs and airways."But," Wang says, "it has never been applied to a pressure-compensated flow control system for agriculture."The team created an experimental Starling resistor architecture that introduces a needle valve, which allows for independent control of two key variables: activation pressure and flow rate. The goal is a phenomenon called pressure compensation, in which a steady flow rate can be maintained no matter the pressure differential."Activation pressure is key to energy consumption," Wang says. "A traditional resistor has to achieve a high level of activation pressure, about 1 bar, to activate the pressure compensation mechanism. That takes a lot of pumping power."The team's experiment showed that using a rubber tube to replace the diaphragm of the existing Starling resistor design can reduce the needed activation pressure by 90 percent."As a result, Wang says, "farmers can use smaller pumps and smaller solar panels to provide the activation pressure."They placed the needle valve at a critical juncture in the system, where, together with the rubber tube, it acted as part of a series of resistors to water flow. Using different tube lengths and thicknesses, they discovered that adjusting the needle valve changed the flow rate, but did not change the minimum pressure needed to "activate" the system. Their paper describes the first mathematical model that quantitatively predicts this decoupling of the two variables.This means their device could make it easier to optimize irrigation systems for a variety of settings."We can design the activation pressure using a given tube material and geometry, and by adjusting the needle valve, water can be applied to different crops at different flow rates," Wang says.This new Starling resistor can be optimized for a high flow rate—necessary for pulsating sprinklers—while the pressure compensation phenomenon also causes the tube to oscillate, which gives it a natural pulsating quality.Wang explains that "a traditional sprinkler uses a spring-loaded arm to impact the flow rate. That wastes energy, and energy has a cost. This device provides pulsation by itself."Leveraging global expertiseThe project has grown out of the team's partnership with Jain Irrigation Systems, a multinational company headquartered in Jalgaon, India, that provided funding, technical knowledge, and market expertise. Researchers in Winter's GEAR Lab have collaborated with Jain on a number of projects related to water and agriculture."Jain is a $1 billion revenue company with small-scale farmers comprising 80-90 percent of their clients," says Wang. "They can commercialize agriculture projects in that space better than any other company."He notes that Jain's guidance and ability to field-test prototypes helped keep the Starling resistor project on the right track."Being able to test this architecture with Jain helped us determine that it had potential in sprinkler systems. Now we have a great opportunity for our work to make an impact."Reference:KY83-TFH85M51R0JEKY83-PF2472-100RF1KY83-P8212 

At SPIE Photonics West, imec will present a new set of snapshot hyperspectral CMOS image sensors featuring spectral filter structures in a mosaic layout, processed per-pixel on 4x4 and 5x5 'Bayer-like' arrays.Imec's hyperspectral filter structures are processed at wafer-level on commercially available CMOS image sensor wafers, enabling extremely compact, low cost and mass-producible hyperspectral imaging solutions. This paves the way to multiple applications ranging from machine vision, medical imaging, precision agriculture to higher volume industries such as security, automotive and consumer electronic devices."Imec's latest achievements in hyperspectral imaging emphasize how our promising technology has become an industrially viable solution for a number of applications," said Andy Lambrechts, program manager at imec. "The new mosaic architecture, and extended spectral range, brings unique advantages compared to our previously announced hyperspectral linescan sensors for applications in which scanning would not be practical. It enables spectral imaging in a truly compact, tiny form-factor, that can even be scaled to handheld devices. From the technology standpoint, we have now successfully demonstrated linescan and tiled sensors, in which spectral filters cover many pixels, to mosaic sensors, in which filters vary from pixel to pixel. At the same time, the spectral range is extended and now covers down to 470nm."The newly developed mosaic sensors feature one spectral filter per pixel, arranged in mosaics of 4x4 (16 spectral bands) or 5x5 (25 spectral bands) deposited onto a full array of 2 Million pixels 5.5µm size CMOSIS CMV2000 sensor. Two versions of the mosaic hyperspectral image sensors have been developed:one 4x4 mosaic with 16 bands in the 470-630nm (visible range)one 5x5 mosaic with 25 bands in the 600-1000nm range (Visible – NIR range)"Imec's hyperspectral imaging sensors (100bands linescan, 32bands tiled and 16/25bands mosaic designs) are off-the-shelf, commercially available engineering sample sensors that we developed to address the fragmented machine vision market and to trigger interest for this unique technology from potential end-users in other industries," explained Jerome Baron, business development manager at imec. "We also offer customized spectral filtering solutions for companies that are already familiar with the technology and interested in developing proprietary solutions with a specific performance in terms of speed, compactness, spatial versus spectral resolution, bands selection, or cost."Related products:ANPVC5030ANPVC2260ANPVC1470ANPVC1210 

Selector switches stand out in electrical systems because they offer precise control over multiple circuits from a single point. A selector switch is a mechanical device that allows a user to choose between different electrical connections using a simple turning motion or lever. Unlike ordinary switches, selector switches provide several operating positions, making them ideal for managing complex machines or automated processes. Their importance grows as industries seek more reliable and customizable solutions.Recent market research highlights strong growth in selector switch applications, especially in industrial automation, automotive, and energy sectors. The table below shows how different industries drive this trend:Sector/ApplicationGrowth Drivers and TrendsRegional HighlightsIndustrial AutomationAutomation boosts demand for reliable, customizable selector switchesStrong growth in Asia Pacific, North America, and EuropeAutomotiveElectric vehicles and advanced features increase selector switch useAsia Pacific leads growth; global expansionEnergy and PowerRenewable energy projects require efficient selector switch controlGlobal investments in infrastructureSelector Switch BasicsWhat Is a Selector SwitchA selector switch is a mechanical device that lets users control which electrical circuit is active. It works by moving a knob, lever, or key to different positions. Each position connects or disconnects certain circuits. Selector switches help manage machines, lights, or other equipment from a single control point.Selector switches have evolved over time. Early electrical systems used basic methods like disconnecting wires by hand, which was unsafe and slow. The invention of lever-based switches made it easier and safer to control lights and machines. Later, toggle switches became popular in homes because they were reliable and simple to use. As technology advanced, new types of switches appeared, such as rotary, push-button, and dimmer switches. Today, smart switches and motion sensors offer even more control and convenience. This history shows how selector switches have changed to meet new needs and improve safety.Selector switches come in many shapes and sizes. Some use a bare shaft, while others have a knob or key. The actuator, or the part you turn or push, can be made of plastic, metal, or thermoplastic. Many selector switches have detents, which are small notches that hold the switch in place. Some have special features like keylocks to prevent unauthorized use or tease-proof designs to stop the switch from getting stuck between positions.Note: Selector switches often use high-quality materials, such as copper alloy contacts and flame-retardant shells, to ensure safety and durability.How Selector Switches WorkSelector switches operate by rotating or moving an actuator to different positions. Each position changes the path of electricity inside the switch. This action connects or disconnects specific circuits. The selector switch working principle relies on cams and contact blocks. When the actuator moves, it turns a cam that pushes or pulls contact blocks. These blocks open or close the electrical contacts, controlling the flow of electricity.Selector switches can have two, three, or even more positions. Some rotary switches allow for dozens of positions, but most selector switches have two or three. The number of positions depends on the design and the application. Detent mechanisms, such as notched wheels and spring-loaded parts, keep the switch steady in each position. Some switches have adjustable or fixed stops, which limit how far the actuator can turn.Common actuator types:Bare shaftKnobbed shaftFlush actuatorKeylock actuatorFeatures found in selector switches:Detents for position holdingGuarded positions for safetyTease-proof mechanismsKeylocking togglesSelector switches use contact blocks to control circuits. These blocks can be shorting or non-shorting. Shorting contacts connect circuits before breaking the old connection, while non-shorting contacts break the old connection before making a new one. This choice affects how the switch behaves in each position.Selector switches must be reliable and durable. Manufacturers test them by operating the switch thousands of times to check for wear and tear. They also test for resistance to voltage, temperature, water, and dust. High-quality selector switches, such as the SWBOI_M01 Silver Selector Switch Head, can last for up to 1,000,000 switching cycles. These switches often have IP65 protection, which means they resist dust and water jets. They also use silver-nickel contacts for better performance and meet safety standards like UL and EN certifications.The table below compares rotary switches and selector switches in terms of efficiency and use:FeatureRotary SwitchesSelector SwitchesNumber of PositionsOften 10 or more, allowing complex configurationsTypically 2 or 3, suitable for simple on/off or three-way switchingSwitching ActionRotating shaft/knob with smooth transitionsSimpler rotary action with fixed positionsContact TypesShorting and non-shorting typesMaintained or momentary contactsPoles and ThrowsMultiple poles and throws for complex circuitsUsually one pole with 2 or 3 throwsUser Interface FeedbackTactile feedback via detents/clicks, position labelsClear visual indication, sometimes with lightingTypical ApplicationsMulti-speed controls, radio bands, multi-mode devicesBasic on/off, manual/auto mode selection, industrial control panelsCostMore expensive due to complexityMore cost-effective due to simpler designSelector switches play a key role in many industries. They provide simple, reliable control for machines, lights, and other equipment. Their design allows for easy operation, clear feedback, and long-lasting performance.Selector Switch FeaturesSelector switches offer several unique features that set them apart from other electrical control devices. These features include multi-position control, advanced contact mechanisms, and stable position retention. Each feature helps selector switches manage complex systems with reliability and safety.Multi-Position ControlSelector switches allow users to choose from two or more operating positions. Each position connects a different circuit or changes the function of a machine. This multi-position control makes selector switches ideal for equipment that needs more than just an on/off setting.Industrial automation relies on selector switches with multiple operating positions to control complex machines and hybrid workflows.Automotive assembly lines in Germany and China use selector switches to manage both combustion engine and electric vehicle production.Modern energy infrastructure, building automation, and railway systems require selector switches for mode selection and circuit reconfiguration.Market research shows that demand for selector switches with multiple positions continues to grow. Sectors like industrial automation, energy, and medical equipment need these switches for precise control and flexibility.The table below highlights key performance metrics that show the operational advantages of multi-position selector switches:Performance MetricOperational AdvantageCurrent Rating (Ith) 10AHandles substantial electrical loads safelyVoltage Rating (Ui) 600VSupports a wide range of applicationsImpulse Voltage Rating (Uimp) 6kVProtects against electrical surgesWaterproof Ratings (IP65, IP55)Ensures durability in harsh environmentsMechanical Endurance (up to 50,000 cycles)Reduces maintenance needsTemperature Range (-25°C to +70°C)Works in extreme conditionsContact Configurations (1NO, NO/NC)Offers flexible circuit designLatching Rotary ActionMaintains secure switch positionsVisual Indicators (Green LED)Provides clear status feedbackMounting Features (22mm hole, up to 8.5mm panel)Allows easy installationCertifications (CE, CCC)Meets safety and quality standardsWarranty (3 years replacement)Shows product durabilityContact MechanismThe contact mechanism inside a selector switch controls how electricity flows between circuits. Selector switches use cams and contact blocks to open or close electrical contacts as the actuator moves. This design allows the switch to control several circuits from one location.Selector switches can use different types of contacts, such as shorting or non-shorting. Shorting contacts connect a new circuit before disconnecting the old one. Non-shorting contacts break the old connection before making a new one. This choice affects how machines respond when the switch changes position.Manufacturers test selector switches to ensure reliable contact performance in multi-circuit environments. These tests include:In-Circuit Testing (ICT) checks each component and connection for defects.Functional Testing verifies that the switch works under real-world conditions.Thermal Testing measures how the switch handles heat during operation.Voltage Drop Measurement detects resistance and hidden defects.Dynamic Load Testing applies real or simulated loads to reveal performance issues.Accelerated Life Testing simulates long-term use to find potential failures.Environmental Testing exposes switches to extreme temperatures and pressure.Vibration Testing checks durability under constant movement.Thermal Cycling Testing evaluates performance during rapid temperature changes.Electrical Testing measures performance under heavy workloads.These tests help ensure that selector switches deliver safe and consistent performance in demanding environments.Position RetentionPosition retention means the selector switch stays firmly in the chosen position until the user changes it. This feature prevents accidental changes and keeps machines operating safely.Selector switches use detents, latching mechanisms, or spring-loaded parts to hold the actuator in place. Some models include keylocks or guarded positions for extra security. Latching rotary action is common in industrial selector switches, helping prevent unintended state changes.Reliable position retention reduces the risk of machine errors and improves safety. Visual indicators, such as green LEDs, give users quick feedback about the switch's current position.Selector switches must withstand frequent use and harsh conditions. Manufacturers design them for mechanical endurance, often up to 50,000 cycles or more. Waterproof ratings like IP65 protect against dust and water, making selector switches suitable for outdoor or industrial use.Selector switches stand out because they combine multi-position control, advanced contact mechanisms, and stable position retention. These features make them essential for managing complex electrical systems.Selector Switch TypesImage Source: unsplashSelector switch types play a vital role in electrical systems. Each type offers unique features for different applications. The main types include rotary selector switches, key-operated selector switches, and lever selector switches. Users select a type based on performance, security, and ease of use.Rotary Selector SwitchesRotary selector switches use a rotating knob or shaft to change positions. This type is common in control panels and industrial machines. Rotary types can have two or more positions. A 2-position selector switch allows users to switch between two circuits, such as on and off. A 3-position selector switch adds another option, often used for forward, reverse, and stop functions.Rotary selector switch types provide versatility and reliability. They handle different voltage and current ratings. Many rotary types offer both shorting and non-shorting contact configurations. Users can choose from short handles for cost savings or long handles for easier operation. Rotary switches also come in illuminated and non-illuminated versions. Illuminated types help users see the switch status in low-light areas.Tip: Rotary selector switches with latching action hold their position securely, reducing accidental changes.Key-Operated Selector SwitchesKey-operated selector switches require a key for operation. This type increases security by preventing unauthorized use. Key-operated types are popular in safety-critical systems, such as emergency stops or restricted access controls. The key must match the lock, so only authorized personnel can change the switch position.Key-operated selector switch types offer strong position retention. They often use durable materials like metal or stainless steel. These types withstand harsh environments and frequent use. Some models combine key operation with illumination for added visibility.Performance CriteriaDescriptionVersatilitySuitable for security and restricted access applications.ReliabilityBuilt for demanding environments.Ease of UseSimple for authorized users, secure against tampering.Material and DurabilityMetal construction for long life.Lever Selector SwitchesLever selector switches use a lever to move between positions. This type provides a simple and direct way to control circuits. Lever types are easy to operate, even with gloves. They are common in industrial and outdoor equipment.Lever selector switch types come in various sizes and mounting options. Some types offer momentary action, returning to the original position after release. Others use maintained action, staying in place until moved again. Lever types support both 2-position and 3-position selector switch designs.Switching speed can vary among selector switch types. Experimental data shows that some advanced types, like Ag filament-based selectors, achieve switching delays under 100 nanoseconds. This fast response supports applications that require quick circuit changes.Common selector switch types include:RotaryKey-operatedLeverIlluminatedNon-illuminated2-position3-positionUsers should consider performance criteria such as voltage rating, durability, and ease of installation when choosing selector switch types. The table below summarizes important factors:Performance CriteriaDescriptionNumber of PositionsTwo or more, depending on application needs.Contact ConfigurationSPDT, DPDT, and more for flexible control.Size and MountingFits different panels and surfaces.PriceBalances cost with required features.Selector switch types give users the flexibility to match the right switch to each application, from industrial automation to security systems.Selector Switch ApplicationsIndustrial ControlSelector switches play a key role in industrial control systems. Factories use these switches to manage machines, conveyor belts, and safety systems. The Harmony Biometric Switch by Schneider Electric shows how selector switches improve safety and control. This switch uses fingerprint recognition to allow only trained workers to operate certain machines. It works like a key-operated selector switch, offering both on-off and pulse modes. The switch responds quickly, taking less than one second to check a fingerprint. It also meets tough standards for dust and water protection. By using selector switches, factories can prevent accidents and keep production running smoothly.Note: Selector switches help restrict access to sensitive equipment, reducing the risk of mistakes or unauthorized use.Automation SystemsAutomation systems rely on selector switches for flexible control. Operators use these switches to choose between different machine modes, such as manual, automatic, or off. For example, a 3-position selector switch can control a pump motor, letting workers pick between Hand, OFF, or AUTO modes. The switch rotates to open or close electrical contacts, making it easy to change settings. Each part of the selector switch, like the contact block and operator knob, serves a special purpose in the system. These switches adapt to many needs, with options for handle length, illumination, and key operation.Selector switches manage devices and circuits in:Industrial robotsPackaging linesHVAC systemsOther UsesSelector switches appear in many other fields. In the automotive industry, they control lighting and power functions. Hospitals use selector switches in medical equipment for safe operation. Building systems use them for lighting, security, and energy management. Home automation systems also use selector switches to control lights and appliances.Selector switches help manage and protect power systems by controlling current flow. They work alongside other switches, such as circuit breakers and load switches, to keep electrical systems safe and flexible. Their design and materials make them reliable in many environments.Selector switches offer multi-position control, reliable contact mechanisms, and strong position retention. These features help users manage complex electrical systems with ease. The global market for selector switches reached USD 1.2 billion in 2024 and could grow to USD 1.8 billion by 2033. The table below highlights key data:Data PointValue/DescriptionMarket Size (2024)USD 1.2 billionMarket Size (2033 forecast)USD 1.8 billionCAGR (2026-2033)5.2%Industrial Segment Market Share70% (dominant segment)Benefits HighlightedFlexibility, safety, efficiency, reduced error, smart connectivityImage Source: statics.mylandingpages.coSelector switches support manufacturing, automotive, and healthcare systems. Their flexibility and safety make them a smart choice for reliable control.FAQWhat is the main purpose of a selector switch?Selector switches let users choose between different circuits or machine modes. They help control equipment safely and easily. Many factories and buildings use them for quick changes in operation.Tip: Selector switches make complex systems simple to manage.How many positions can a selector switch have?Most selector switches have two or three positions. Some special types offer more. Each position controls a different function or circuit.PositionsCommon Uses2On/Off, Start/Stop3Forward/Reverse/StopWhere are selector switches used most often?Factories, power plants, and vehicles use selector switches. Hospitals and office buildings also use them for lighting and safety systems. Selector switches fit many different jobs.Industrial machinesControl panelsMedical equipmentHow do selector switches improve safety?Selector switches prevent accidental changes by locking in place. Some models use keys for extra security. This design keeps machines running safely and stops unauthorized use.Note: Good position retention helps avoid mistakes and accidents.

This is a good day because kynix will share an interesting project with you -- Luminous Halloween Costume !  Halloween is coming soon and I know at least that some of you are still procrastinationg you costume build. That's ok,I would share a fun and easy luminous Halloween costume that takes almost no time to buildstill impresses the pants off your friendsis appropriate for all ages So at first,we should prepare some components as follow: Knit Hat in Red, Green, Blue or White,etcBlack T-shirtElectrical TapeHot Glue Gun and GlueSoldering IronSolderQduino Mini Dev BoardWS2812 LED StripLiPo Battery Next,let's start to make it. The first step,I made the shirt which will represent the anode and cathode of the LED.Ake the electrical tape and cut it into two pieces. One should be about 2 inches shorter than your shirt, and the other about 4 inches shorter. On each piece cut one edge into a point. Then place them on the shirt parallel to each other, pointing downward from the collar. Set this aside. The second step, place the hat on whoever will be wearing the costume — or someone with a head similar in size. Fold up the bottom to make a small lip. Starting in the back, hot glue the LED strip to the hat, wrapping it around the hat from the bottom and moving up. Cut the LED strip when there is about 1 to 2 inches of hat left at the top. Next,take the hat off and count the number of LEDs on it. After that,we need to use the program provided below to program Qduino.You will need to make two small edits. First, update numPix variable to the number of LEDs on your hat. Then find the four colorWipe commands in the loop function. You will notice that I have included red, green, blue and white. Comment out the lines that are not the same color as your hat. If you have not already, you will need to install Adafruit’s Neopixel Library and the Qduino board into your board manager in Arduino. For more instructions on how to do this, please visit this Qduino Hookup Guide and our Arduino Library Installation tutorial. Upload your program using the code below://Melissa Felderman for SparkFun Electronics. Functions have been taken from the adafruit neopixel library example code.  #include <Adafruit_NeoPixel.h> #define PIN 2 int numPix=150; Adafruit_NeoPixel strip = Adafruit_NeoPixel(numPix, PIN, NEO_GRB + NEO_KHZ800); void setup() { strip.begin();  strip.show(); // Initialize all pixels to 'off'} void loop() {  // comment out all lines except the color you want on your hat.  colorWipe(strip.Color(255, 0, 0), 50); // Red  colorWipe(strip.Color(0, 255, 0), 50); // Green  colorWipe(strip.Color(0, 0, 255), 50); // Blue  colorWipe(strip.Color(0, 0, 0), 50); // White } // Fill the dots one after the other with a colorvoid colorWipe(uint32_t c, uint8_t wait) {  for(uint16_t i=0; i<strip.numPixels(); i++) {    strip.setPixelColor(i, c);    strip.show();    delay(wait);  }} Finally,Solder the LED strip’s leads to the Qduino. The DIN lead should go to D2 on the Qduino, VCC to VCC, and GND to GND. Pop in a LiPo battery to your Qduino and turn on to test.  Put on the black shirt and then the hat. Fold the bottom edge over again to make a lip. Hide the Qduino and LiPo inside, and then turn it on. Now you are a luminous human!