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You must have heard about Arduino UNO and some of you also have developed programs in Arduino UNO by using Arduino IDE. Arduino is an open-source microcontroller based on easy-to-use hardware and software, whereas Arduino IDE (or Arduino Software) is an Integrated Development Environment. We know that the program in Arduino UNO is easy, but have you ever tried to do the program with a Raspberry Pi? Raspberry Pi is a series of small single-board computers that can be plugged into a computer monitor, keyboard, and mouse. In this post, we will show you how to program on Arduino with Raspberry Pi.Components we need
An Arduino UNO with IDE
A Raspberry Pi with Raspberry Pi OS
One USB Type-A to USB Type-B connector
PC or LaptopHow to Program on Arduino with a Raspberry Pi Download the Arduino File
First of all, you need to download the Arduino IDE on your computer from its official site so that you can write the code and upload it to the Arduino UNO board. Now follow the below steps to do the complete downloading process.
Navigate to your browser
Just type Arduino IDE in the search box and press Enter
Now it will through you to pages where you will be asked to download or donate.
Arduino IDE will begin to download to your computer, just wait till the file has downloaded.
Hopefully, the Arduino IDE has been successfully installed on your computer. Now go to the installation process.Extract and Install the File
Arduino IDE software has been successfully installed on your PC. Now you have to extract and install this file. Follow the below steps to do this process.
The Archiver will open the file, there will be a circle toward the left that blinks red and green. Wait for it to finish before doing anything else.
After downloading and successfully installing Arduino IDE on your PC, you have to write a program on IDE. Now, go to the below steps to do that.Program on Arduino IDE
We have completed the Installation process, now it is time to do a program on Arduino IDE software. Follow the below steps to do this.
Now you will find the green page as shown in the above image. Here you have to write the program.
Copy the below code and paste it onto the green page
// the setup function runs once when you press reset or power the board
// initialize digital pin LED_BUILTIN as an output.
// the loop function runs over and over again forever
//turn the LED on (HIGH is the voltage level)
// wait for a second
//turn the LED off by making the voltage LOW
// wait for a second
The above code will make the LED turn on for 1 second and vice versa.
Now connect the USB cable, the square side of the cable goes to the Arduino UNO while the rectangle side goes to the Raspberry Pi.
After uploading the code, the 13-number LED in the Arduino UNO will continue to turn on and off for 1-second.What is Arduino UNO?
Arduino is an open-source microcontroller based on easy-to-use hardware and software. We can program on Arduino UNO by using Arduino IDE (Integrated Development Environment) software. You can use the USB cable to connect Arduino UNO to your computer. The Arduino programming language is simplified from the C/C++ programming language which is also called sketches. The Arduino UNO is designed for hobbyists, newbies, and anyone interested in creating interactive objects.
Also read: How to install Windows on Raspberry Pi?What is Raspberry Pi?
A Raspberry Pi is a small, fully functional computer that can be plugged into a computer monitor, keyboard, and mouse. It is based on a microprocessor. Raspberry Pi supports its Linux-based operating system Raspberry Pi OS. It contains everything – CPU(Central Processing Unit), GPU(Graphics Processing Unit), GPIO(General Purpose Input/Output) pins, and power source connector.
Also read: Single Board Computer: Raspberry Pi vs Beagalebone vs Arduino.
You're reading How To Program On Arduino With Raspberry Pi
Although the Raspberry Pi can be connected to a TV or monitor via HDMI or DVI, there are times when running a Raspberry Pi “headless” (without a monitor) is desirable. In a headless setup, you could connect to your Raspberry via SSH but if you want the full desktop then you will need to connect using a remote desktop protocol. The easiest is to setup VNC on Raspberry Pi. Virtual Network Computing (VNC) is a graphical desktop protocol that allows you to access the full Raspberry Pi desktop from another machine. Typically you would run the VNC client on a PC running Windows, OS X or Linux and access the Pi’s desktop over the network.
The first step is to install the VNC server on the Raspberry Pi. To do this, run the following command to install TightVNC, a lightweight and open-source implementation of the VNC system:
Now that the server has been installed, it needs to be started to generate a remote desktop session. The server isn’t started by default however it can be started manually like this:vncserver
Where -geometry sets the resolution of the remote desktop, in this case 1024 x 768; and -depth sets the color depth, in this case 24 bits. The first time you run the VNC server you will be asked for a remote access password. This is the password that must be entered when someone tries to remotely connect to the desktop. This password shouldn’t be relied on as the sole means to stop public access to a remote desktop but on a private home or office network, it should be sufficient to limit access to the Pi’s user interface. You can change the password at any time using the vncpasswd tool.
As part of the output from the server, start up the vncserver will report the number of the virtual display it has created. Under X (the underlying system for many Linux windowing environments), you can have multiple displays with the default physical desktop being :0. The vncserver will likely create display :1 which can be accessed from a VNC client on port 5901. Port 5902 is for remote virtual desktop :2 and so on. You can force the VNC server to create a session on a certain display by specifying the number as the first parameter:vncserver :
You can kill a remote desktop at any time using:vncserver
Where :1 is the desktop number.VNC clients
There are lots of VNC clients (often called VNC viewers) for Windows, OS X and Linux. You can get a Windows viewer from the TightVNC website and for Linux you can install one from your distro’s repository. For Ubuntu use:
To connect to the Raspberry Pi, start the VNC viewer:vncviewer 192.168.1.4:
Where 192.168.1.4 is the address of the Raspberry Pi and :1 is the desktop number.Start VNC server on boot
It is possible to get the VNC server to start at boot by creating a special initialization script. Create a file called vncserver in your home directory with the following shell code:
### BEGIN INIT INFO
# Provides: VNC
# Required-Start: $local_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start or stop the VNC server
### END INIT INFO
"/usr/bin/vncserver :1 -geometry 1024x728 -depth 24"
"Started VNC server."
"/usr/bin/vncserver -kill :1"
"Stopped VNC server."
Now run the following commands to change the owner of the file to root, copy it to the init.d directory and install the script:
sudoupdate-rc.d vncserver defaults
Now reboot and check that the VNC server has been started automatically. There are a couple of things that you should note about this script. First it assumes that the you are using the default pi user and secondly, it will only work if you have previously set a password using vncpasswd or you have run the VNC server manually at least once.Conclusion
Now that the VNC server is installed, you can get access to a full desktop over the network using a VNC client. Even if your Raspberry Pi is connected to a TV or monitor, it is a great way to enable remote administration of the device. If you ever need to stop the VNC server, you can now use the following command:
sudoservice vncserver stop
It can also be started again by replacing the stop parameter with a start parameter.
Gary has been a technical writer, author and blogger since 2003. He is an expert in open source systems (including Linux), system administration, system security and networking protocols. He also knows several programming languages, as he was previously a software engineer for 10 years. He has a Bachelor of Science in business information systems from a UK University.
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If you recently purchased your first Raspberry Pi and are ready to get started, we’re here to help!
Depending on the Raspberry Pi you bought, the steps for setup can vary which includes using a kit. For instance, you may have simply purchased a board without any extras or you might have bought a kit with heat sinks and a cooling fan. So, feel free to skip any steps in our tutorial that don’t apply.Setting up your Raspberry Pi
Install the Raspberry Pi inside the case
It may seem so simple, but if you’ve never worked with a Raspberry Pi before, it can be a little intimidating at first. So starting from scratch, here’s how to install your Pi in its case using heat sinks and a cooling fan. Note: This setup uses the CanaKit Raspberry Pi 4 Model B.
Before you start, be sure to take any necessary anti-static precautions!
1) Take the lid off of the case and then hold your finger on the inside bottom and lift the surrounding piece. This CanaKit’s case has three pieces.
2) Place your Raspberry Pi board inside the case and note that the markings for the ports match with the bottom of the case. Slide the side with the ports under the two tabs at the top and press gently. For a super helpful visual, check out this video from RaspberryPi.org.
3) If you have heat sinks that you would like to use to keep your Raspberry Pi cooler, these are easy to install. Peel the backing off the large square heat sink and place on the Broadcom CPU square, the rectangle heat sink on the SDRAM chip, and the tiny one on the USB 3.0 Controller.
4) If you have a cooling fan you’d like to use, install this next on the GPIO pins. Connect the red wire with pin 4 and the black with pin 6. If you prefer the fan run at a lower speed, you can connect the red wire to pin 1 instead. Pin 4 is 5V while Pin 1 is only 3.3V. Next, pop the fan itself onto the inside of the case lid.
Screenshot of GPIO header pin board from CanaKit
This wraps up installing your Raspberry Pi inside its case with heat sinks and a cooling fan. You may choose to simply use the board without these and they are not required by any means. The case simply keeps your Raspberry Pi safe. And if you plan to do high-performance tasks with it, consider using the heat sinks and cooling fan.
Insert your microSD card with NOOBS
You’ll use a microSD card with NOOBS to boot up your Raspberry Pi and perform the setup. NOOBS (New Out Of Box Software) is an operating system installation manager for RPi.
If you bought a kit that came with a microSD card pre-installed with NOOBS, then you’re one step ahead. So go ahead and put that card into the microSD card slot at the bottom of the board. The card can only go in one way and should slide in smoothly, so don’t force it.
If you do not have a microSD with NOOBS pre-installed, you can take care of it yourself assuming you have a microSD on hand. Use your computer to make sure the card is formatted correctly and then install NOOBS.
Use these references:
To format a card on Mac or Linux, you can use your computer’s built-in tools (like Disk Utility on Mac).
Connect your peripherals and power
In order to provide your Raspberry Pi with input and see it as you do, connect your keyboard, mouse, and display next.
Use the USB ports for your wired keyboard and mouse.
Use the main HDMI port for your monitor or TV. Note: If you are using a Raspberry Pi 4, you’ll need a micro HDMI cable and connect it to the main micro HDMI port. Again, you may receive a cable with the kit you purchased.
Use the 3A USB-C port for your power adapter. If you purchase a kit with an on/off switch, connect that to your power adapter cord first and then plug the switch into the 3A USB-C port.
Install the operating system
If you want to use a different operating system:
Ethernet: Connect an ethernet cable using the corresponding port. Then, access the system on your network.
Set up your Raspberry Pi with Raspberry Pi OS
If you decide to use Raspberry Pi OS (previously called Raspbian), you’ll follow the on screen prompts to set it up after your Raspberry Pi reboots as described above. The wizard will walk you through the following steps.
Set your locale: Choose your country, language, and time zone. Optionally, you can check the boxes for Use English language and Use US keyboard.
Change the password: By default, the password is “raspberry” but you should change it to a secure one that you’ll remember or can jot down for safe keeping.
Check the display: Mark the box if you see a black border around the desktop on the screen.
Select a wireless network: When connections are detected, select your Wi-Fi from the list and enter the password if necessary. You can Skip this step if you prefer.
Update the software: Check for software updates or hit Skip if you’d rather do it later. It’s recommended to see if there’s an update for the software right off the bat so that you have the most recent version.
And that’s all there is to setting up your Raspberry Pi!
Stay tuned for more tips and how-tos for Raspberry Pi. And feel free to share your own tips or tricks for beginners below!
There’s little doubt that the Raspberry Pi 4 is significantly more powerful than its predecessors. Its based on the faster ARM Cortex-A72 microarchitecture and has four cores pegged at marginally-higher clock speeds. The graphics subsystem is significantly beefed up as well, running at twice the maximum stock clocks as the outgoing model. Everything about it makes it a viable desktop replacement. But is it really good enough to replace your trusty old desktop? I spent three weeks with the 8GB version of the Pi 4 to answer that million-dollar question.Setting It Up for Desktop Use
To use it as a Desktop, you will need external peripherals like the monitor, keyboard, mouse, etc. There is an official desktop kit that you can get, but avoid it at all costs. The sizeable premium it commands doesn’t justify the unergonomic keyboard and lacklustre mouse bundled with the kit. With the exception of the 15.3-watt official power supply, none of the included accessories are any good.Ditch the Official Case and microSD Storage
The official Pi 4 case has near zero ventilation and causes the SoC to thermal throttle under moderate desktop usage. We have an excellent guide showing how to modify it to prevent just that, but you’re better off purchasing this actively cooled aluminium case Instead. It fared the best from the half a dozen different cases I tested in this period. The thermal graph below shows how well this particular case cools a Pi 4 8GBm overclocked to 2.0 GHz, even when it is running at full tilt.
The Pi 4’s fast USB 3.0 interface allows you to ditch the slower microSD storage for a significantly faster SSD (through a USB 3.0 enclosure) or USB 3.0 flash drive.
Faster storage not only improves boot-up and application load times, but it also makes the entire desktop experience relatively snappier and more responsive. The only issue is finding an UASP (USB Attached SCSI Protocol) capable SSD enclosure compatible with the Raspberry Pi 4, because some enclosures have trouble booting the OS. Read our handy guide to know more about USAP enclosures and how to boot the Pi 4 off a USB drive.
Just be sure to buy a powered USB hub if you plan on connecting any additional USB peripherals. The powered bit becomes important because the Raspberry Pi 4 spec only allows the totality of USB ports to draw a maximum of 600mA of current.Hardware Optimized for Multitasking
The two micro HDMI outputs allow you to run a dual display configuration, which is a godsend for productivity. The upgraded GPU can handle a 4K display, but I would not recommend two of them. The limited display bandwidth forces both monitors to run at 30Hz. That can be quite disorienting. I tried two 1080p monitors as well as a 1080p and 768p monitors successfully at 60Hz. There were no issues whatsoever. The built-in dual-display management utility does a good job of letting you set up and configure the displays and desktop options with a great degree of granularity.
It goes without saying that you’re better off opting for at least a 4GB version of the Pi 4 for this exercise. The additional RAM goes a long way toward allowing you to run multiple applications and browser tabs concurrently – something that is bound to happen in a typical work setup.
The latest stable version of the Raspberry Pi OS is still 32-bit, and that limits each system process to a maximum of 3GB of RAM. In theory, a single application cannot use all 4GB or 8GB memory of the higher end variants but has no practical consequences for the typical use case. Furthermore, each Chromium browser tab is treated as a separate process, so the 3GB limit doesn’t have any real-world impact on performance or system memory access.Don’t Expect It to Replace Your Desktop
Now that we have figured out the optimal way of using the Raspberry Pi 4 as a desktop, it’s time to delve into how it fares in this role after it has been equipped to give its best shot. That completely depends on where you’re coming from and what you expect from this tiny single board computer.
If you have abruptly moved from using a powerful gaming PC, like I have, you’re going to feel the general sluggishness associated with a relatively weak mobile SoC, such as this one. While launching applications and switching between browser pages is faster on an SSD, it cannot compensate for the Pi 4’s weaker mobile processing hardware. The couple of seconds spent waiting between the aforementioned tasks quickly add up and are quite annoying for someone coming off a decent laptop or a desktop PC.
YouTube videos, for that matter, are acceptable enough only up to 1080p resolution. Acceptable because the video playback still noticeably drops frames and reveals occasional screen tearing. The lack of proper OpenGL video hardware acceleration implementation in the OS is partly to blame. However, this is more a deficiency of the software engineering department of the Raspberry Pi Foundation, so things may improve in the future after the OS has matured. Just don’t hold your breath.Linux + ARM = Compatibility Woes
The Raspberry Pi 4 does most things a regular desktop can. Even seemingly resource-hungry tasks such as video editing can be done in a pinch with free applications such as Kdenlive. Although it’s relatively easy to find a Linux version of popular software, you’re bound to run into something that is available on Linux but isn’t quite compatible with the ARM version that the Raspberry Pi OS needs. That means you’ll have a hard time trying to install Dropbox or a Twitter client and must learn to make peace with the browser versions instead.
Things, however, get a lot worse when you begin running into hardware issues. The video feed of my old Logitech webcam worked perfectly out of the box, but Zoom absolutely couldn’t use the audio feed. I had to give up on conducting a Zoom video call.
While most common hardware is compatible, you are likely to hit a brick wall when something isn’t. And then you’d wish you had a PC or Mac to get the job done.Temper Your Expectations
The Raspberry Pi 4 can perform basic computing tasks with reasonable competence, but you honestly can’t expect the snappiness and speed associated with a proper desktop or laptop computer. The Raspberry Pi 4 still has some ways to go until it can match those devices in terms of third-party software support. This SBC is nevertheless a viable low-cost, low-power computing alternative for those who don’t mind restricting themselves to basic web browsing and productivity tasks. That holds true just as long as you don’t mind putting in the effort to find (or even compile) ARM Linux alternatives for your favorite applications.
I won’t recommend getting rid of your primary desktop/laptop in favor of a Raspberry Pi 4 just yet. You can, however, use Raspberry Pi as a NAS, music server, or as a personal web server.
Growing up, Nachiket had a penchant for disassembling household electronics and appliances; most of which couldn’t be reassembled successfully. His parents didn’t approve. These days, he leverages his lifelong pursuit of dissecting gadgets to write about technology. His parents still don’t approve.
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If you’ve been reading this blog for a while, you’ve probably seen us refer to the Arduino microcontroller on a number of occasions. This little circuit board is at the heart of many DIY projects, from robotics to art projects and just about everything in between.
But what on Earth is Arduino, anyway? What makes it so versatile? And what can you do with it?
Limor Fried built her business on DIY tools and technologies. Limor, better known to the Internet as Ladyada, is a cofounder of Adafruit Industries, a site that sells kits, tools, and accessories geared toward the DIY set. Ladyada was gracious enough to take a few minutes to explain a little about what makes Arduino boards so cool–and useful–to anyone who’s ever wanted to build or hack their own devices.Arduino Defined
Arduino is described by its makers as “an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software,” whatever that means. In short, it is a popular open-source electronic board that is capable of controlling just about any DIY hardware project. And there’s a lot you can do with it.
As Ladyada explains:
“The ‘what is Arduino?’ is still a little vague, and that’s the Arduino’s strength. It’s the glue people use to connect tasks chúng tôi best way to describe an Arduino is with a few examples. Want to have a coffee pot tweet when the coffee is ready? Arduino. Want to have a Professor X Steampunk wheelchair that speaks and dispenses booze? Arduino. Want to make a set of quiz buzzers for an event out of Staples’ Easy Buttons? Arduino.
“Arduino was mostly designed by artists for artists and designers…I think it’s been the most important product/project in the world of educational electronics.”
Arduino is sold under a Creative Commons Share-Alike (CC-SA) license, so you can make changes to the original Arduino board or how it’s programmed and release it to the public, so long as you release it under the same CC-SA license. As you might expect, this has resulted in plenty of variations of the original Arduino board. Ladyada points to the Gameduino board, which is made with DIY gaming in mind. And Teagueduino is essentially an Arduino board put together in a kit to help people learn how to program it.
Seeing as Ladyada’s job essentially allows her to play with Arduino boards and create her own projects, we asked her for an example of her best and worst creations:
“I think [Arduino’s] been the most important product/project in the world of educational electronics.”
–Limor “Ladyada” Fried
“Luckily I think I can answer this using the same project! The best/worst Arduino creation was an open-source Homeland Security non-lethal weapon project: “THE BEDAZZLER: A Do-it-yourself Handheld LED-Incapacitator”.
“After attending a conference where the $1 million “sea-sick flashlight” (named “THE DAZZLER”) was demonstrated by the US Department of Homeland Security, we decided to create our own version using an Arduino. For under $250, you can build your own dazzler and we’ve released the source code, schematics and PCB files to make it easy. A great Arduino project for people who really like blinking LEDs. We also added in a mode selection so you can put it into some pretty color-swirl modes, great for raves and parties!”Making It Work
Before you start messing with an Arduino board, you will need to learn how to program one. Luckily, there are a number of resources that can help you get started.
Ladyada has a few suggestions:
“A lot of people use my free tutorials on my personal website. I have six lessons all together and many people over the years have said their is where they started their journey. There are also some great books, two of my favorites are: Getting Started with Arduino by Massimo Banzi and Practical Arduino by Jon Oxer and Hugh Blemings. The free open-source Arduino IDE (how you program Arduinos) also has tons of code examples and libraries.
“Next up, there are Hackerspaces for in-person learning and workshops and lastly (but not least) the amazing Arduino online community. You can visit the chúng tôi forums or Adafruit forums and see thousands of people helping each other and sharing code! It’s a wonderful community and very inclusive to beginners!”
For some additional inspiration on what you could make with your Arduino kit, follow geeky technology blogs (such as this one!) that showcase the finest hacks, or check out Freeduino for a listing of handy tips when you’re fine-tuning the microcontroller. Make’s blog and Instructables also have good Arduino sections. If you idea or project could be beneficial to other people, drum up some support on Kickstarter.
Clearly, if you’re looking for an affordable way to begin programming cool robotics and other projects, Arduino is a great–and fun–place to start. So what are you going to create with Arduino? Don’t forget to tip us off when you’re done with your next awesome creation!Like this? You might also enjoy…
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