Arduino And Rpi

How to program an Arduino with a Raspberry Pi

Running a program on an Arduino is easy, but have you tried doing it with a Pi? The Raspberry Pi is powerful enough to be a standalone computer and also good enough to program a microcontroller.

Here, we are using a Raspberry Pi 3 Model B+ to make the Arduino Uno flash an LED!

We’ll split this into two parts: how to install the Arduino IDE and how to use the IDE on a Raspberry Pi. While it is possible to program an Arduino through the Platformio, doing it this way should be much simpler for a new person.

Why do you want to use a Raspberry Pi for Arduino programming

Usually, you may want to do this for the following reasons:

  1. You cannot use a normal computer.
  2. You are in for the learning experience.

But there is more than that. In fact, there is a good trade-off between using a standalone computer and using your own Raspberry Pi!

Positives

  1. Raspberry Pi uses less power than a laptop.
  2. You can turn it on from the power bank when you have no electricity.
  3. Saves time when you actually use it as an IoT terminal.

Negatives

  1. Overheating can become a problem for your Raspberry Pi if you don’t have ventilation.

As it stands, the Raspberry Pi is good enough if you’re doing a quick IoT project on a weekend. Just connect the sensors, peripherals and the Arduino, then write your code to see it work in tandem with the rest of your system.

But if you are still in the “you should know how this circuit works” stage, please use a suitable desktop computer. It will help treat headaches.

The things you will need

  1. Raspberry Pi with Raspberry Pi operating system and USB ports
  2. Arduino
  3. 1 USB Type A to USB Type B connector
  4. Computer accessories (monitor, keyboard, and mouse)
  5. 250Ω resistor (optional)
  6. LED mini bulb (any color, optional)
  7. breadboard and jumper wires (optional)

Installing the Arduino IDE

  1. Open Chromium (or any browser) and go to https://www.arduino.cc/en/software.
Chromium Arduino Url Home
  1. Choose “Linux ARM 32 bits.”
Chromium Arduino Arrowed Home
  1. This should take you to a page that allows you to download and/or donate. You can click Download Only if you don’t want to donate.
Chromium Arduino Download Donation Page
  1. This should open a new window. You can change the file name at the top and the download location on the left. The “Save” button is in the lower right corner.
Chromium Arduino download folder
  1. You’ll find it in your Downloads folder (or whatever folder you choose) when the download is finished. Double click on it to launch the Archiver application. It may take up to two minutes before it opens.
Opening the Raspberry Pi Arduino archive
  1. The archiver will open your file, but it will take some time to finish reading it. There is a circle on the bottom left that flashes red and green. Wait for it to finish before doing anything else. You can also have a glass of water at this point.
Raspberry Pi archiver extract files
  1. Click “Extract files”. This is the open brown box with an orange arrow pointing to the right.
Raspberry Pi archiver button extract files
  1. This opens a new window that allows you to choose some settings. You can change the value of the top text box to point to the Downloads folder. Otherwise, it should point to the “tmp” folder by default. Click “Extract” at the bottom right to finish the download.
Raspberry Pi . archiver extraction window
  1. Close my archive, then go to the new folder and double click on the “install.sh” file.
Raspberry Pi File Explorer Install Sh
  1. Click “Execute” in the new window.
Archival Execution button
  1. The Arduino IDE should be available at “Pi logo -> Electronics -> Arduino IDE.”
Raspberry Pi . icon tray

Programming with the Arduino IDE

  1. Run the Arduino IDE from the Pi logo. You will find a green window where you can write your code.
Arduino Ide Raspberry Pi
The Arduino IDE looks the same on a Raspberry Pi as it does on a Windows PC.
  1. Copy and paste the following code:
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
}
 
void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LED_BUILTIN, HIGH);
  delay(500);
  Serial.println("LED on");
  digitalWrite(LED_BUILTIN, LOW);
  delay(500);
  Serial.println("LED off");
}

The code turns the LED on and prints “LED on” on the Serial Monitor for 0.5 seconds, then does the opposite, turning the LED off and printing “LED off” for the same amount of time.

  1. To save, click “File -> Save” or press control + s on the keyboard.
Arduino ide save button
  1. Connect the cables. The Arduino Uno uses a USB Type A to USB Type B connector. The square-nest side goes to the Arduino, and the rectangular side goes to the Raspberry Pi.
Type A to type B Usb Connector 2
Left to Right: USB Type A and USB Type B
  1. To upload to Arduino, click “Sketch -> Upload” or press control + yo on the keyboard.
Arduino Ide download button
  1. When loaded, the TX and RX LEDs will flash quickly, then run the program, making the L LED on or off every 0.5 seconds.
Arduino Raspberry Pi Led Internal 3
  1. To make things easier to see, you can try connecting an LED and a 250 degree resistor between D13 and GND. Do this on a breadboard to make it easier and be sure to disconnect the Arduino from the Raspberry Pi before doing anything with the pins.
Ltspice Arduino Led External Schematic
  1. If you did it correctly, the LED should light up and dim at regular 0.5 second intervals.
Arduino external flash
After 0.5 seconds, the LED turns from light to dim.
  1. To access Serial Monitor, click “Tools -> Serial Monitor” or press control + Transformation + M on the keyboard.
Arduino Ide Serial Monitor

Arduino Etiquette

After doing that, you should be able to start making anything with your Raspberry Pi and Arduino. To step back a bit, if you’re going to do this a lot, you need to know a little bit about making things easier with an Arduino.

Always remember the phrase: pinsAnd the code upAnd the out of the authority.

Pins Off

Let’s start by removing all wires from the screws. If you’re taking too long on a new project, chances are your mat has already forgotten your pin labels. You could, for example, connect an output pin on “HIGH” with another output pin on “LOW”. This is an easy way to break the GPIO pin on a microcontroller chip!

code up

The code is simple: upload your code. Always keep in mind that the Arduino is always turned on while plugged into a USB port.

out of the authority

Finally, when you update your circuits, always turn off the power by removing the Arduino from all power sources. The last thing you want to happen is putting the wrong wire in the wrong place at the worst moment to get the smoke out of whatever you’re doing. Remember that short circuits can instantly ruin your project.

Frequently Asked Questions

Can you also program an Arduino Uno on a Raspberry Pi?

Any board, as long as it’s powered by the Arduino IDE, will work with a Raspberry Pi. It’s basically like coding on a regular PC with a Linux distribution.

What Raspberry Pi boards will this method work with?

The ability to program the Arduino should work with all Raspberry Pi microprocessor boards except the Zero, which do not have built-in USB ports. This also won’t work on the Nano, which can’t run Raspberry Pi OS.

Can I run multiple Arduino boards on a Raspberry Pi at the same time?

Yes, you can, but there is a problem: the USB output of the Raspberry Pi is limited to about 1.2A of current. If you are using multiple servos, having them all move at the same time may cause some boards to restart after experiencing a sudden power drop.

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