Everything Testudo
Tactile Push Button: Your Gateway to Interactive Electronics
Section 1: Overview & How It WorksHave you ever wondered how a simple press can bring a complex machine to life? In the world of DIY electronics, the humble tactile push button is the ultimate bridge between human touch and digital action. This tiny, clicky component is a staple for any maker starting their journey, offering a satisfying physical response whenever it is pressed.At its core, a tactile switch functions as a momentary gatekeeper for electricity. Inside the housing, a tiny, curved metallic disc sits above an open electrical circuit. When you apply pressure to the button cap, the disc deflects downward, bridging the internal contacts and allowing current to flow freely. The moment you release your finger, the metal springs back to its original shape, instantly breaking the connection.Understanding the layout of these four-pin switches is straightforward. The pins are internally connected in pairs. When you press the button, it temporarily connects the two separate pairs, completing your circuit and registering a successful input.Section 2: Real-World Use in Arduino ProjectsFor anyone diving into the Arduino ecosystem, mastering the push button is a foundational milestone. It serves as one of the most basic digital input devices, allowing you to feed external commands directly into your microcontrollers. Whether you are assembling a soldering practice kit or designing a custom interface, buttons introduce interactivity to your creations.Integrating a tactile switch into your electronics projects opens up endless possibilities for hands-on learning. Here are two practical ways hobbyists utilize this versatile component: Mode Selectors and Toggles: You can program your microcontroller to cycle through different software states with each press. A single button can turn an LED on and off, change the flashing pattern of a light display, or switch between different sensor modes in a DIY weather station. Custom Gaming Controllers: By pairing multiple tactile switches together on a practice kit circuit board, you can build your own retro gamepad. Each button press can send a unique command to your computer, turning your hardware build into a functional controller for simple games. Navigating the mechanics of hardware input is a rewarding step for any beginner-friendly STEM program. By mastering this single component, you unlock the ability to make your projects truly responsive to the physical world.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
Potentiometer: Your Dial for Precision Control
Section 1: Overview & How It Works Have you ever wondered how the volume knob on an old stereo works? Or how a dimmer switch smoothly adjusts the brightness of a room? The unsung hero behind these everyday actions is a simple electronics component known as the rotary potentiometer. At its core, a potentiometer is a variable resistor that allows manual control over the flow of electrical current. Inside the component sits a resistive track and a tiny sliding contact called a wiper. As you turn the physical shaft, the wiper moves along the track, altering the distance the electricity must travel. A longer path creates higher resistance, while a shorter path creates less resistance. This mechanical shift directly translates to a variable voltage output. For a maker diving into hardware, understanding this component opens up endless possibilities for physical interaction. It bridges the gap between mechanical movement and digital control. When integrating one into a practice kit, proper soldering ensures a reliable connection. Hand soldering the three terminals onto a circuit board is an excellent way to refine your technique, as the pins are spaced perfectly for a standard soldering practice session. Section 2: Real-World Use in Arduino Projects In the maker community, the potentiometer is a staple component for any beginner-friendly DIY project. Because microcontroller platforms read changing voltages, this component serves as an intuitive analog input device. It allows you to feed real-time human interaction directly into your code. Here are two classic ways to use a potentiometer in your next Arduino project: LED Brightness and Speed Control: By connecting the component to an analog input pin, you can map the position of the knob to control the blinking speed of an LED. Alternatively, you can use it to smoothly dim or brighten a light, mimicking a real-world dimmer switch. Audio and Servo Motor Control: You can use the knob to position a small servo motor precisely between 0 and 180 degrees. This setup is frequently used in robotics to control mechanical arms, steering mechanisms, or even to adjust audio volume levels in custom-built speaker systems. Whether you are assembling a basic soldering practice kit or designing an intricate STEAM learning layout, mastering this component is a fundamental milestone. It provides an immediate, tactile way to see your code interact with the physical world. See It in the Testudo Kit Every component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
LED: Light Up Your Electronics Projects
Section 1: Overview & How It WorksHave you ever wondered what makes the tiny indicator lights on your favorite gadgets glow? Meet the Light Emitting Diode, or LED for short. Unlike traditional incandescent light bulbs that use a fragile filament, an LED is a solid-state semiconductor component designed to convert electrical energy directly into visible light efficiently.At the heart of every LED is a tiny chip made from materials like Aluminum Gallium Indium Phosphide. When an electrical current passes through this material in the forward direction, electrons release energy in the form of photons. This process produces a bright, clean illumination without wasting energy as heat. Because they require very little power and are incredibly robust, they are a staple in almost every electronics project.When working on a DIY soldering practice kit, understanding orientation is crucial. LEDs are polarized, meaning electricity can only flow through them in one direction. They feature a longer leg, called the anode, which connects to the positive side of your circuit. The shorter leg, known as the cathode, connects to the negative side. Reversing this orientation will not damage the component under low voltages, but it will prevent the light from turning on.Section 2: Real-World Use in Arduino ProjectsFor anyone diving into the maker community, the humble LED is almost always the starting point for learning hardware interaction. It provides immediate visual feedback, allowing you to confirm that your circuit design and programming logic are functioning correctly.Within the Arduino ecosystem, an LED serves as an ideal output component for beginner-friendly STEM and STEAM applications. For instance, you can integrate one into a smart home system where a motion sensor triggers the light to turn on automatically. Another classic project involves building a countdown timer or a visual indicator for a temperature monitoring system, where the light changes states based on environment data.Because these components are highly sensitive to current, they are typically paired with a small resistor in series to prevent them from drawing too much power. Whether you are learning soldering for the first time or prototyping an interactive gadget, mastering this versatile component opens the door to countless creative possibilities in electronics.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
XH Connector: A Beginner's Guide to Wire-to-Board Connections
Section 1: Overview & How It WorksHave you ever wondered how different parts of an electronic device talk to each other without creating a messy web of loose wires? Enter the wire-to-board connector, a fundamental component in the world of electronics that acts as a secure, removable bridge between your wiring and a printed circuit board (PCB). Specifically, right-angle headers allow wires to plug in parallel to the board, saving valuable vertical space in tight enclosures.At its core, this component consists of two main parts: a plastic housing that holds the wire terminals and a pinned header soldered directly to the board. The primary job of this connector is to ensure a stable electrical current flows cleanly between your components without dropping the signal. By using a locking friction mechanism, it prevents accidental disconnections from vibrations while still allowing you to unplug the cable easily during a repair or upgrade.For maker projects, these connectors typically feature a standard 2.5mm pitch, which is the precise spacing between the center of each pin. They are designed to safely handle standard low-voltage applications, often rated for up to 3A and 250V. Built from durable, heat-resistant nylon and paired with tin-plated brass pins, they are robust enough to withstand the heat of a beginner's iron during soldering practice.Section 2: Real-World Use in Arduino ProjectsWhen building custom gadgets with an Arduino, managing your wiring is crucial for a reliable build. Standard jumper wires are great for breadboarding, but they can easily slip out of place once you move your project off the bench. Integrating wire-to-board connectors into your custom PCBs or shields ensures that your power supply, sensors, and displays remain firmly linked to your microcontroller.Consider a few practical applications where these connectors excel: Custom Robotics: If you are building a rover, the vibrations from the motors can easily dislodge loose connections. Using these headers to attach your motor drivers and battery packs keeps the robot moving reliably. Smart Home Hubs: For desktop gadgets like an automated weather station, right-angle connectors let you plug in external sensors or a screen while keeping the overall housing slim and low-profile. Whether you are assembling a soldering practice kit or moving your first DIY prototype to a permanent enclosure, mastering these connectors is a major step forward. They transform a fragile tangle of breadboard wires into a clean, durable, and highly professional device.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
IR Transmitter: Sending Signals with Invisible Light
Section 1: Overview & How It WorksHave you ever wondered how your TV remote sends commands across the room without any wires? It all happens thanks to a clever piece of electronics called an Infrared (IR) Emitting Diode, or IR LED. While it looks just like a standard light-emitting diode you might find in a basic electronics hobby kit, it operates in a spectrum of light that is completely invisible to the human eye.Instead of illuminating a room with visible light, this component acts as a tiny wireless transmitter. When an electrical current passes through the diode, it emits infrared light at a specific peak wavelength, typically around 850nm to 940nm. To capture this invisible data, the transmitter pairs up with a matching receiver, like a phototransistor or an IR sensor module, which listens for the signal and translates it into an electrical action.Because they operate on low voltage and offer high reliability, these components are the backbone of modern wireless control. They allow different devices to communicate seamlessly over short distances without interfering with ambient visible light.Section 2: Real-World Use in Arduino ProjectsFor any aspiring maker diving into the world of microcontrollers, mastering the IR LED opens up a massive realm of possibilities for automated, wireless interaction. It bridges the gap between hardware assembly and coding, making it a staple component in advanced STEM and STEAM education programs.In the Arduino ecosystem, these diodes are frequently used to build custom remote control systems. By wiring an IR LED to a digital output pin and utilizing standard libraries in the Arduino IDE, you can replicate the exact signal configuration of almost any commercial remote control. This allows you to write simple C++ programs to turn your television on, control your stereos, or interface with smart appliances automatically.Beyond simple remotes, these components are highly utilized in object detection and automation. For example, by placing an IR transmitter next to an IR photodiode, you can create an optoelectronic obstacle avoidance sensor. When an object moves close to the pair, the invisible light bounces off the object and reflects into the receiver. This exact mechanism is used by developers to build automated garage doors, smart proximity sensors, and line-following robots.Integrating these components into a soldering practice kit is also an excellent way for beginners to upgrade their skills from basic circuitry to interactive design. Learning how to properly orient the positive and negative pins during soldering ensures your DIY project transmits perfectly, laying a solid foundation for your future journey in electronics.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
Shift Register: Multiply Your Microcontroller Pins
Section 1: Overview & How It WorksHave you ever run out of input or output pins while building an electronics project? This common roadblock is exactly where the shift register comes to the rescue. It acts as an IO expander, allowing you to control multiple peripheral lines using just a tiny handful of connections from your main board.Essentially, a shift register takes a rapid stream of data arriving one bit after another—known as serial data—and spreads it out into multiple parallel pathways simultaneously. Think of it like a train conductor directing a single-file line of passengers into eight different individual cabins at the exact same moment.Inside this integrated circuit, an internal memory bank captures and holds data for extended periods. When the clock signal pulses, each piece of data advances to the next position in line. Once all the data bits are correctly positioned, an internal storage register locks them in, enabling the chip to cleanly present the active high or low voltage output to all your connected components at once.Section 2: Real-World Use in Arduino ProjectsFor any avid maker tinkering with the Arduino ecosystem, the shift register is a staple component. Microcontrollers are powerful, but they have a physical limitation on how many components they can directly plug into. By mastering how to wire a shift register during your next soldering practice session, you unlock the ability to manage massive displays and complex arrays without upgrading to a more expensive development board.When building a DIY soldering practice kit, integrating a shift register opens up several classic beginner-friendly projects: Massive LED Animations: Instead of sacrificing eight valuable digital pins on your board to drive eight individual LEDs, you can use a shift register to drive them all using only three pins. This setup makes it incredibly simple to create multi-LED running light displays, persistence-of-vision wands, or complex visual countdown patterns. Driving 7-Segment Displays: If you want to build a digital clock or a scoreboard tracker, controlling a multi-digit 7-segment display manually will quickly exhaust your available pin count. A shift register simplifies this challenge by cleanly converting your basic serial instruction stream into the parallel signals needed to illuminate the individual numerical segments. Adding this component to your hobby repertoire expands your design horizons, shifting your focus from worrying about hardware limitations to designing intricate, creative coding sequences in your IDE.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
Audio Power Amplifier: Pump Up the Volume in Your Builds
Section 1: Overview & How It WorksHave you ever wondered how a tiny gadget converts a faint electrical signal into sound you can actually hear? Enter the audio power amplifier, a staple component in the world of beginner-friendly electronics. Its primary job is to take low-power audio signals—like those from a microphone or a media player—and boost them enough to drive a speaker.At its core, this integrated circuit functions like an electronic multiplier. When a weak audio voltage enters the input, the internal circuitry utilizes a separate power supply to duplicate the waveform on a much larger scale. It achieves this with minimal distortion and requires very few external components to operate, making it highly efficient.For those practicing their soldering, the physical package of the component matters immensely. In most beginner-friendly kits, you will find the dual in-line package, commonly known as the DIP version. This is a through-hole technology (THT) component featuring long metal pins that push directly through holes in a printed circuit board, unlike tiny surface-mount technology (SMT) variations that sit flat on top of the board. The THT configuration makes it exceptionally easy to position, hold, and secure when completing your first DIY soldering practice kit.Section 2: Real-World Use in Arduino ProjectsIn the broader maker ecosystem, these low-voltage amplifiers act as the voice for your programming projects. While an Arduino microcontroller is excellent at handling data and executing code, its hardware pins cannot output enough current to drive a standard speaker directly. By placing an audio power amplifier between your development board and a speaker, you bridge that gap safely without overloading your microcontroller.Integrating this component unlocks a wide array of interactive, sensory DIY builds. For example, you can build a portable handheld synth where a potentiometer adjusts audio frequencies processed by the microcontroller, which are then boosted by the amplifier into a crisp audial output.Another popular hobby implementation is an automated alert system. You can program a distance sensor to detect motion; when triggered, the hardware signals the amplifier to play a warning chime through a speaker. This makes the component a foundational tool for anyone exploring STEM or STEAM educational projects.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
Ceramic Capacitor: The Tiny Power Tank in Your Electronics
When you dive into the world of DIY electronics, you will quickly notice small, bead-like components scattered across almost every circuit board. These are multilayer ceramic capacitors. While they might look like tiny, colored drops of epoxy with two metal legs, they play a massive role in keeping your hardware running smoothly.Section 1: Overview & How It WorksThink of a ceramic capacitor as a temporary, lightning-fast storage tank for electricity. Inside its small protective shell, multiple alternating layers of metal and ceramic materials are stacked closely together. The metal layers act as conductors that hold an electrical charge, while the ceramic layers act as an insulator, preventing the electricity from jumping directly between the plates.Unlike large batteries that store massive amounts of energy and release it slowly, ceramic capacitors handle tiny amounts of energy and can charge or discharge in a fraction of a millisecond. Their primary job in electronics is to absorb quick voltage spikes and fill in brief electrical dips. They act as steadying anchors, smoothing out electrical noise and keeping power lines remarkably stable across an operating temperature range as wide as -55°C to +125°C.Section 2: Real-World Use in Arduino ProjectsIf you are a maker building your first interactive gadget, ceramic capacitors are essential for protecting sensitive microcontrollers. When a motor turns on or a relay clicks, they draw sudden bursts of current that create electrical interference. Adding a ceramic capacitor across your power lines absorbs this chaos, ensuring your hardware reads sensors accurately without crashing or resetting unexpectedly.These tiny components are perfect for hands-on soldering practice. Because they have no polarity—meaning there is no positive or negative leg—you can solder them into a circuit board in either direction without worrying about damaging the part. This makes them incredibly forgiving to use in any introductory soldering practice kit.Here are two classic ways a hobbyist can use ceramic capacitors in a typical project: Button Debouncing: When you press a mechanical pushbutton, the metal contacts inside physically bounce, causing an Arduino to think you pressed it multiple times. Placing a ceramic capacitor across the switch absorbs these microscopic electrical bounces, giving you a clean signal every single time. Power Supply Decoupling: When assembling an electronics kit, soldering a ceramic capacitor right next to the power pins of a microchip acts as a local reservoir, feeding the chip instant energy whenever it processes heavy tasks. See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
amomii Blink: Add a Display and Buttons to Your Arduino Projects
Section 1: Overview & How It WorksAdding a visual display and physical controls to your electronics projects completely changes how you interact with your creations. The amomii Blink is a mini shield — an expansion board that plugs directly into a microcontroller, offering a compact, all-in-one solution for user interaction. This particular add-on combines a crisp monochrome OLED display with three tactile push buttons, packing visual feedback and input control onto a tiny footprint.The primary job of this module is to bridge the gap between your code and the physical world. The OLED screen operates using a common driver chip and communicates via the I2C protocol, an industry-standard method that allows multiple devices to share the same data lines. Meanwhile, the three built-in buttons are wired directly to digital input pins. By utilizing internal pull-up resistors in your software, these switches reliably detect when a button is pressed by completing a circuit to ground.Section 2: Real-World Use in Arduino ProjectsFor any maker diving into electronics, this type of layout is incredibly versatile. It seamlessly integrates into the Arduino ecosystem, aligning perfectly with standard board headers or connecting via standard jumper wires to other development platforms. Because it handles both input and output without cluttering your workspace, it serves as an ideal interface for a variety of DIY applications.You can easily integrate the amomii Blink into several beginner-friendly projects within the Arduino IDE: Custom Digital Stopwatch or Timer: Use the OLED screen to display elapsed time, while dedicating the three push buttons to start, stop, and reset the clock. Miniature Gaming Interface: Program simple retro games where the screen displays the action and the tactile buttons act as left, right, and action controls. Environmental Monitoring Station: Pair the shield with an external temperature or humidity sensor, using the display to read real-time data and the buttons to toggle between different measurement units or menus. This hardware combination provides an excellent opportunity for tinkering and developing practical coding skills.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
Transistor: The Tiny Switch Powering Your Electronics Projects
Section 1: Overview & How It WorksThink of a transistor as the ultimate electronic gateway. In the world of DIY electronics, it primarily functions in two ways: as an amplifier to boost electrical signals, or as an electronic switch to turn currents on and off. For anyone diving into a soldering practice kit, understanding this tiny, three-pinned component is a major milestone.To understand how it works, imagine a water valve. The transistor has three terminals: the emitter, the collector, and the base. A tiny amount of current flowing into the base opens the gate, allowing a much larger current to flow from the collector to the emitter.By utilizing a small signal to control a much larger one, the transistor allows low-power components to interact safely with high-power devices. This simple mechanism is the foundation of modern computing and the core element of almost every electronics project you will build.Section 2: Real-World Use in Arduino ProjectsWhen working with an Arduino micro-controller, you quickly learn that its output pins can only provide a limited amount of current. If you try to power a high-draw device directly from an Arduino pin, you risk damaging the board. This is precisely where the transistor becomes indispensable for a maker.For example, if you are building a hobby robotics project and need to control a small DC motor, the Arduino cannot supply enough power on its own. By connecting an output pin to the base of a transistor, your code can switch the transistor on and off, safely regulating the external power source driving the motor.Another practical application is driving high-brightness LED strips or interactive buzzers. Whether you are assembling a beginner-friendly soldering kit or designing custom circuits, mastering the transistor allows you to safely expand the scope of what your creations can control.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
Photoresistor: The Sensor That Sees the World
Section 1: Overview & How It WorksIf you have ever wondered how an outdoor security light automatically knows when to turn on at dusk, you are already familiar with the work of a photoresistor. Often called a light-dependent resistor, this small but highly sensitive component acts as an eye for your electronic circuits. Its primary job is simple: it changes its electrical resistance based on the amount of light shining on its surface.The physics behind it is elegant and straightforward enough for any maker to appreciate. The top face of the component features a squiggly track made of a specialized semi-conductive material, often Cadmium Sulfide. When darkness falls, the material holds onto its electrons tightly, creating high electrical resistance that makes it incredibly difficult for current to flow through. However, as bright light hits the surface, it transfers energy to those electrons, freeing them up to move. This causes the internal resistance to drop drastically, allowing electrical current to pass through with ease.This responsive nature makes the component incredibly dependable across a wide range of environments. It can operate reliably in freezing conditions as low as -30°C and handle warm environments up to 70°C. Peak sensitivity typically aligns with light wavelengths around 540 nanometers, which closely matches the green-yellow light spectrum that human eyes see best. By translating environmental brightness directly into a variable electrical signal, it bridges the gap between the physical world and your electronic hardware.Section 2: Real-World Use in Arduino ProjectsFor anyone diving into the Arduino ecosystem, the photoresistor is an absolute staple for interactive electronics. Because the microcontroller cannot read a shifting resistance directly, this component is typically paired with a fixed resistor to create a simple circuit called a voltage divider. This setup converts the changing resistance into a fluctuating voltage signal that your development board can easily interpret through an analog input pin.This setup opens the door to countless beginner-friendly DIY projects centered around environmental awareness. A classic example is building an automatic nightlight or a smart desk lamp that brightens up smoothly as the room gets dark. By writing a few lines of C++ code in the Arduino IDE, you can instruct the board to monitor the incoming analog value and trigger a bright LED or a relay whenever the ambient light drops below a specific threshold.Beyond simple lighting, these sensors are excellent for hands-on soldering practice kits aimed at building miniature solar trackers or laser-tripwire security alarms. Integrating light sensing into your builds is a fantastic milestone for any STEM or STEAM education initiative, as it beautifully demonstrates how hardware and coding interact to solve real-world problems. Whether you are assembling a basic hobby kit or designing a complex interactive installation, mastering this tiny powerhouse is a fundamental step in your journey as a creator.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more
IR Receiver: Your Gateway to Remote-Control Electronics
Section 1: Overview & How It WorksHave you ever wondered how your TV remote beams a command across the room instantly? The secret lies in a tiny, three-pinned component known as an infrared (IR) receiver. This clever piece of electronics acts as the "eyes" for your projects, listening specifically for invisible light signals.At its core, the component houses a specialized internal integrated circuit designed to detect light in the infrared spectrum. To prevent everyday household lighting from confusing the sensor, the incoming light must be pulsed at a specific carrier frequency—typically 38 kHz. When the receiver catches this specific rapid pulsing, it filters out the background noise and translates the light bursts into clean electrical pulses.Operating smoothly at low voltages ranging from 2.7 V to 5.5 V, this component is incredibly efficient for portable designs. It offers a wide acceptance angle of approximately ±35° and can detect signals from up to 15 meters away. This makes it highly reliable for capturing commands even if your alignment isn't perfectly precise.Section 2: Real-World Use in Arduino ProjectsFor anyone diving into the maker movement, the IR receiver is a staple component for expanding control possibilities. It bridges the gap between hardware and user interaction, allowing you to interface physical builds with standard wireless remotes. It is a fantastic addition to any soldering practice kit because it teaches you how to handle three-pin components while unlocking massive functionality.When integrated into the Arduino ecosystem, this component acts as a digital input sensor. It reads the incoming modulated light patterns and sends the corresponding binary data straight to your microcontroller for processing.Here are a few practical, beginner-friendly project ideas to spark your creativity: Wireless Robot Navigation: Build a custom rover and steer it around your workshop using an old TV remote. Each button press sends a unique signal to the microcontroller, directing the motors to move forward, turn, or stop. Smart Home Automation Switch: Create a DIY relay control system that lets you toggle desk lamps, fans, or decorative electronics on and off from the comfort of your chair. Remote Media Controller: Interface the receiver with your computer via your code to pause, play, or skip tracks on your media player using a physical remote. Mastering this component is an excellent milestone in your electronics journey. It provides a highly rewarding hardware experience that pairs perfectly with basic programming, making it a classic staple for STEM hobbyists and tinkerers alike.See It in the Testudo KitEvery component in this guide is part of the Testudo soldering practice kit — a hands-on way to learn electronics, soldering, and Arduino coding from the ground up.
Learn more