What to Look for When Buying DIY Electronics Gear
There are a number of decisions to make before deciding on an Arduino starter kit. This includes the type of Arduino board and sensors you want in the kit and, of course, the price you want to pay. You’ll also want to check whether the board’s header pins are attached or whether you will need to solder them on yourself. You can go either way with the latter decision, depending on how comfortable you are with a soldering iron and whether you want something that’s easy to work with right out of the box.
Get an Arduino Board
You should check whether the starter kit comes with a real Arduino board or a clone. Arduino is the name of the Italy-founded open-source hardware and software company that manufactures these boards, as well as the projects and user community around it. An Arduino clone can be good, too, as long as it is made by a reputable company with good quality assurance – such as the Maker Uno. There are also boards for specific applications, such as the Lilypad boards used for wearable projects and Adafruit Boarduino, a clone that slots nicely into a bread board. If you would like to support the Arduino project, you can buy boards directly from Arduino. You should also decide on the size of Arduino you want to use in your build and check to see which one is included in the starter kit. Arduino boards come in a number of types or “families” that have advantages for different applications. These include:
Arduino UNO – the most commonly-found board in various kits, the preferred starter.Arduino Nano – basically, a smaller form factor version of the UNO but with fewer connectivity options.Arduino Due – a larger board than the UNO, with more connection options. It might be a tricky board for beginners, as it uses a different voltage and has a lot going on.
You can buy a standalone board or a starter kit that includes the board and additional peripherals.
What a Starter Kit Contains
Besides the box or container that they come in, Arduino starter kits typically include:
An Arduino board (there are different sizes, as mentioned previously)A USB cable to connect the Arduino board to your computer or to charge it from another sourceA solderless bread board (these vary in size and number of points)Potentiometers (adjustable resistors otherwise called “pots”)Buzzers (both passive and active types)LCD displaysLEDs (There are many different types and colors, but typically the kit will have about five each of red, yellow, and blue.)Push buttons (with caps, such as the blue ones in the image below)Resistors of various sizes (These typically include a dozen each of 220 Ohm and 1K Ohm resistors and have different color bands denoting their sizes)Various sensors (These detect flames, temperature, infrared, light, and gases, for example.)Tilt switchesJumper cables (the wires needed to connect the Arduino header pins to the bread board)Infrared remotes (These look like tiny TV remotes and can control the Arduino-based device wirelessly.)Stepper motors and servosNumeric displays of various sizes for one-digit or multiple-digit readoutsA battery holder (typically to hold a rectangular shaped 9V battery, which would connect to an Arduino Uno with a barrel connector)Various expansion boards (known as “shields”)
Arduino Kit Pricing
Arduino sells a range of kits starting at roughly $60. Its flagship starter kit costs $110, at the time of writing, and the third revision of the Arduino Uno is approximately $28. Clones of Arduino boards exist, as Arduino hardware and software are open source. Sometimes these clone boards can be cheaper than the official Arduino boards; however, you should check who produces them. This is not always easy to do, and unfortunately, some (but not all) makers of clone boards implement low quality control. Arduino boards can also be slightly cheaper if the header pins still need to be soldered on. Boards such as the Arduino Micro might come without header pins and would then need soldering. If you are able to solder or up for a challenge to learn how to solder, then you can potentially save a little bit here.
Examine Your Arduino Starter Kit
Once your Arduino starter kit arrives, look it over. Check for any damage, such as bent pins on the components. See if anything is obviously broken, as this can happen in shipping, and if the package included padding. Next, check for any quality issues in the components: whether they are soldered on securely, anything is askew, the solder is neat and shiny. Do this for all expansion boards or shields, too. It may help to look under a light microscope or magnifying glass, if you have access to one. Also make sure that everything mentioned in the kit’s description is in the box. If there are any batteries, check that they are not swollen and that any wires in the kit have not melted down. If anything seems missing or damaged, you may want to ask for a replacement.
Start Building
Once you are happy that everything you ordered is in your kit and in good condition, you can start getting familiar with it. For programming scripts onto your Arduino board, you will need a program, such as the free Arduino IDE, available for Windows, macOS, and Linux. You can download and install this to your computer or even use the Arduino IDE with a Raspberry Pi. Next, think about what type of projects you want to build. One way to get cracking is to use prewritten scripts that are available online. Plug your Arduino into your computer’s USB port, open the Arduino IDE, choose your board, and upload code to your Arduino, like these examples on the Arduino website. It is that easy. You can start building projects, such the beginner’s blinking light Arduino project. You will need the Arduino board and USB cable, male-to-male jumper cables, a resistor (to make sure you don’t blow your LED), and LED lights of your choice (start with easy-to-spot red). Pay attention to the voltages, as not everything can be directly connected to your Arduino and used safely.
Upgrade Your Components for Complex Projects
For your first projects, make do with what your starter kit ships with. However, as your projects increase in complexity, you’ll find that you will need a plethora of wires to connect your bread boards and many sensors connecting to those. To prepare for this, get some extra jumper wires of various types, another one to three bread boards, and perhaps a 9V battery to connect to your Arduino. You can also connect AA batteries to your Arduino if they are in a proper housing. Some of these come with a useful on/off switch. If you know that you are going to often use batteries for your Arduino projects, get good quality rechargeable batteries. These will pay for themselves after a few projects, together with the necessary battery charger. If you buy twice the number of batteries that you need for your projects, you can swap out the flat batteries with charged ones and never worry about downtime while testing your creations. After that, upgrade your kit to build more complex projects by getting some more sensors (such as a humidity sensor), more colors of LEDs (or even a pre-built LED traffic light) or different actuators (such as motors or a pump).
Looking After Your Arduino Board
Your Arduino board, as with many electronic components, is susceptible to moisture damage, so avoid spilling liquids on it. Also, any dust or crumbs that get into the components will be hard to clean out, so it is best to avoid contaminating the board with this debris. If you already have dust on your Arduino, you can try to blow it off with a can of compressed air. The best practice for electronics is to also use electrostatic discharge controls, such as an anti-static band around your wrist to ground yourself and avoid any static charge from harming your new Arduino starter kit.
Move on to Cooler Projects
Once you’ve tinkered with your kit a bit, look at Arduino projects that others have built. It’ll be a good use of your time since you’ll become more familiar with how these come together. At this point, you may start to see technical drawings using programs such as Fritzing. These lay out the connections that are needed to the Input/Output (I/O) pins on your Arduino board. This can help you learn about the different pins on the Arduino board and how to use them in your projects. By this stage, you will have outgrown your starter kit but will still be able to use most of the included items to make even cooler projects. You can look into how to make your Arduino projects look pretty, for example, by incorporating them into a weatherproof container. You can also look into some useful tools, such as a soldering iron, multimeter and wire strippers. If you’re feeling ambitious, look into the other Arduino boards, using them with your rechargeable batteries and battery charger, or plugging them in to a wall outlet.
DIY Arduino Starter Kit
If the available premade starter kits in your area are too expensive or don’t have the required items to build your next project, you could put together a DIY Arduino starter kit of your own. Start with an official Arduino board or a good clone board, then build from there. Make sure to have a good quality USB charging cable and a battery holder with rechargeable batteries and a charger if possible. Of course, bread boards and jumper wires of various types are the next step; you can almost never have too many of these, especially if you are prototyping complex projects. You can also choose components based on the projects that you will build. If, for example, you want to make a robot or car, you would want motors for the wheels. If your project has various sensors, you may want displays for the readouts. Image credit: Harrison Broadbent via Unsplash With the temperature sensor and your Arduino, you can read the temperature in the Arduino IDE or connect a little display to show the temperature reading. Finally, one of my favorite projects that I built is a soil moisture sensor, which is connected to my Arduino Uno and lets me know when my potted plant is too dry. It is also connected to a little pump and water reservoir and automatically doses my potted plant with water when the measurement reads low.
