Upload a Sketch From Arduino to Pc
Equally an electronics engineer getting dorsum to my roots with Arduino, I found information technology could be a little confusing getting started uploading code (or sketches) to an Arduino. Installing drivers, IDEs, and everything else involved wasn't a straightforward task. And so I put this guide together based on my experience uploading lawmaking to a new Arduino on a new computer.
This guide is a step-by-step (with pictures) on how to upload and run code on an Arduino using a Windows x car. The Arduino I've used is the UNO WiFi Rev 2, though the steps (and problems I solved) should be similar for most Arduino models. Run into common problems at the bottom of this guide if y'all're having whatever issues following the steps. I've besides tended to utilise sketch and code interchangeably in this guide, a symptom of being an electronics and software engineer by training.
Step 1: Connect Arduino using a USB Cable
Typically a USB Type-B cable is used to connect to an Arduino – it has the USB 2.0 Type-B connector on one terminate and the USB 2.0 Type-A connector (for a computer on the other).
At the store, I asked for a "USB printer cable" as this is also the sort of cable that is used to connect a computer to a printer. Information technology cost me a few dollars. Any standard length seems to exist OK, though I imagine it must be shorter than 5 metres (16 feet); I concluded up buying a 1m cable.
Information technology didn't affair which USB socket I used on my computer, they all seemed to work fine when communicating with the Arduino, even the USB Type-C hub that I use with my laptop immune me to program the Arduino.
A split power cable is not required; the USB connexion to the computer will ability the lath.
Need more help with which USB cable to use, or which wires and cables an Arduino requires? I wrote a whole guide on USB cables and wires useful for Arduino, cheque information technology out here: chipwired.com/arduino-cables-and-wires
Pace ii: Open the Arduino IDE
The IDE (Integrated Development Environment) is used to write code, compile programs, and upload them to the Arduino for it to execute.
The IDE tin can be downloaded from Arduino'southward website hither. I used the portable one, so all I had to do was excerpt it to a folder and run the executable. If installing information technology, follow the steps in the installation wizard to get started – I believe the installation wizard has the advantage of taking intendance of installing the drivers for y'all. Information technology'south the IDE that lets yous write code into sketches, compile those sketches into instructions for the processor, and upload those instructions to the Arduino.
If using the portable IDE, you might need to install drivers (this is what I had to do, see "Problems I encountered" below). The easiest manner I found to install drivers was to run the executable in the drivers folder where I extracted the executable to.
At starting time my board wasn't listed, I had to click some text in the bottom left of the IDE to update it and then that my board was shown. I was having a problem with uploading sketches until I clicked this update. Doing this update ran through the commuter install wizard besides (installing an additional driver), but I imagine it'south a practiced idea to run through the magician separately anyway (as I did to a higher place).
Step 3: Select the Arduino Board and Port
Under the Tools menu at the meridian of the IDE, select your Board and your Port.
For Board, I found that mine didn't show up at outset, and the IDE had selected a similar model. This caused me bug later, so brand sure your board is selected. If your board isn't listed, check out the previous steps about installing drivers.
For Port, I found that the IDE automatically selected the correct port as there was only one listed. Some of the research I did said that if there was more than than one port, try each of them that's not COM1 (obviously Windows never allocates this to an Arduino).
If Port is greyed out it means that the IDE does non believe the Arduino is connected to the estimator. Connect the Arduino and Port volition go an selection that can be selected. If the Arduino is connected, information technology means the IDE cannot identify it, accept a expect at installing the drivers every bit per Stride two.
Footstep four: Prepare a Sketch (or write some code)
Starting with an example is the easiest way I've institute of testing out a new Arduino and calculator setup, or getting started on your own project.
To use an example sketch, click File then Examples then Basics and I like to first with the glimmer example. This will load a new sketch that contains lawmaking to blink the LED on your lath. These examples are already configured for your lath so it should glimmer the right LED without any need to change the code.
Even when starting my own project, I like to use one of these examples as a starting indicate. It'due south code and a setup that you know works, which is a good place to start. I then add together to the lawmaking to accomplish whatsoever I'k trying to do.
Arduino code, contained in a sketch, is separated into two sections: A setup, that's run once when the board powers up (or programming has finished); and a loop that runs in a loop as long as there is ability to the board. There are other ways that code can be executed (I'm thinking interrupts here), but that'southward some other commodity'due south worth of item.
Step v: Upload Sketch (look for the Tx and Rx LEDs flashing)
To get the lawmaking running on the Arduino, click Sketch and then Upload. The upload pace will likewise do the verify/compile step, so there'due south no need to click information technology separately for the purposes of this guide.
The RX and TX LEDs should flicker a piddling every bit the IDE sends the code to the board.
I institute that as soon equally uploading the code was consummate, the Arduino started to execute it. This took me a while to realise equally the default sketch loaded on my Arduino (UNO WiFi Rev 2) was the Glimmer one where the LED blinked every second. To test this, I modified the lawmaking to flash unevenly (try changing the filibuster(xx) numbers) then that it was obvious my lawmaking was running on the lath.
If your code is not running on the board, check out the section below where I go through some of the bug I encountered.
Finishing Upwards
Afterwards following these steps, you should now take:
- An Arduino connected to your estimator
- An IDE that uploads lawmaking/sketches from your computer to your Arduino
- An Arduino that executes the code that was uploaded to it
If you lot're Arduino is not running the uploaded lawmaking, there could be a few things that went wrong. I've included beneath how I solved some of the problems I faced when uploading my first sketch to an Arduino.
Common Issues when Uploading Arduino Code
If you lot demand help with writing the code for a sketch, I wrote a whole guide on the basics of an Arduino sketch and how to use variables, equations, loops, functions, and more. Check it out here: chipwired.com/arduino-programming-linguistic communication-guide
These are the bug I constitute when I was trying to write my showtime programme to an Arduino:
My Board Wasn't Listed in the IDE
Under the Tools carte du jour yous can see which lath the IDE is intending to upload your program to. When I opened the IDE for the start time, it automatically selected a board that was similar to mine but non exactly the aforementioned. I encountered problems uploading the sketch to the board because I had the wrong one selected; my board wasn't even an selection!
To set up the problem where the target Arduino is not listed in the Tools carte du jour:
- Install the latest drivers from Arduino, these can be constitute in the drivers folder where the arduino.exe file is stored
- Install any updates for the IDE, wait in the bottom left-manus corner when the IDE is first opened – it will alert you here if there are whatsoever necessary updates
Wrong COM Port or COM Port Greyed Out
Usually this is due to the wrong drivers beingness installed for the board you're using.
If you've installed all the drivers and your board is selected in the IDE (see above) but the COM Port nonetheless isn't correct, I've heard that updating the drivers in the Windows Device Manager is the fashion to fix this
Programmer is non responding
When I first tried to upload a sketch to my Arduino an error popped up saying something like avrguy: programmer is non responding.
From my experience in microcontroller electronics (I'chiliad relatively new to Arduino), the Arduino that runs your lawmaking tin can exist a carve up board to the device that records the program to the Arduino (the 'programmer'). On my first Arduino (an UNO WiFi Rev two), the programmer and the microprocessor are part of the aforementioned board. Other Arduinos might have unlike configurations – e.grand. having a separate programmer can save space as information technology doesn't always need to be attached.
To fix this problem:
- Ensure the right board is selected in the Tools menu of the IDE
- If at that place is an option to select the Developer (in the Tools bill of fare), and so make sure the correct developer is selected
- Ensure the right drivers for your Arduino (and programmer if carve up) are installed on your figurer – run into the steps above on how to practise this
After many years away from electronics projects, Chris recently dived back in past picking up an Arduino. This guide was written based on his first experiences setting up a estimator to programme an Arduino.
Source: https://chipwired.com/uploading-code-arduino/
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