In this post nosotros are going to solve Arduino software and driver related issues which are driving some beginners crazy and we will also address some of the problems related to Arduino hardware.

We will run into:

  • Why your Arduino is not detected past your computer?
  • Solutions for non detection of Arduino boards.
  • Driver Download Link.
  • How to install the driver.
  • Troubleshooting Arduino lath and IDE.

You landed on this page considering yous could non upload your sketch to Arduino or information technology is not even detected past your trusty figurer. Hither nosotros will hash out the possible issues why your Arduino board is not detected or why you couldn't upload the sketch/code and we volition see the recommended solutions.

Let's starts with a common issue.

Why your Arduino is not detected by your figurer?

This is a very common result faced by nigh Arduino beginners and sometimes fifty-fifty who has intermediate experience with Arduino. Your IDE will not prove the continued Arduino board and yous device manager volition say "unknown USB device", when yous endeavour to ready with windows tools you will still end up non fixing the outcome.

Arduino unknown USB device
Arduino unknown USB device

To find out why the Arduino boards are not detected, let's audit the Arduino board'due south USB to serial converter fleck.

A USB to serial converter module is utilized on all Arduino boards to uploading sketches to the microcontroller and also for serial communication betwixt the figurer and the principal microcontroller.

Here is an Arduino UNO clone with ATmega16U2 controller which is used as USB to serial converter, the same converter is also utilized on genuine Arduino boards.

Arduino with Atmega16U2
Arduino with Atmega16U2

The clones which apply ATmega16U2 as USB to serial converter for the microcontroller won't have any issues with detection.

At present let's inspect another Arduino lath clone, which doesn't use ATmega16U2 for USB to series conversion.

Arduino with CH340G chip
Arduino with CH340G chip

The in a higher place Arduino board is SMD type; this board has exactly same specification as genuine Arduino UNO. As y'all can see at that place is a difference in the USB to serial converter fleck. This is called CH340G USB to series converter chip.

Y'all can run across this on inexpensive Chinese Arduino clones; this flake volition non be detected neither by your figurer nor the IDE. You have to install CH340G commuter to your computer only then your estimator will recognize the device and able to upload sketches.

Yous tin as well find this CH340G chip fifty-fifty on Arduino nano clones as illustrated below:

Arduino Nano with CH340G chip
Arduino Nano with CH340G bit
  • Download CH340G Driver:

You tin download the CH340G commuter for these kinds of Arduino boards: Click Here

How to install CH340G Commuter to windows Computer:

  • Download the CH340G drive from the given link.
  • At present double left-click on this icon:

  • It will inquire for administrator permissions, click Yep.
  • Now it will prompt you with 3 options: Install, uninstall and help.
  • Click on Install.
CH340G driver Installation
CH340G driver Installation
  • Click Install, once the driver installed it says "Driver Install Success".
Arduino CH340G Driver Installation
Arduino CH340G Driver Installation
  • Restart your computer after installation (Important).

NOTE: Some users notified that Arduino clones which utilise CH340G chip are not working properly on USB 3.0. Delight comment if you face similar effect.

By at present majority of the issues would have been solved with Arduino boards. Now permit's discuss some other bug faced by arduino enthusiasts.

Plan/sketch not uploading solutions:

These are the possible explanations why you are not able to upload sketches to Arduino and their solutions.

  • Incorrect COM port selected:

Nigh beginners brand this mistake, they select incorrect COM port. Each computer has unlike COM port numbers and you have to select the right one for your PC. If your Arduino lath sport ATmega16U2 chip it volition show yous to which COM port number your board is continued to and select that ane.

If your Arduino board sport a CH340G chip, information technology won't show you the connect COM port number and y'all have endeavor each of them that is displayed.

  • Selected incorrect board at tools menu:

Y'all have to select the correct board proper name. If you cull Arduino Nano for Arduino Uno, you code will non get uploaded.

  • Selected incorrect processor:

You should select the right microcontroller IC number at tools menu, otherwise the code will non get uploaded.

  • Tx and Rx pins are connected to your excursion:

Whenever you are uploading a code to your Arduino board, make sure that Tx and Rx pins are not connected anywhere else in the circuit. Once you lot stop uploading the lawmaking, you may reconnect the Tx and Rx pins to your circuit. The Tx and Rx (pin number 0 and one) are the pins where the code gets uploaded to the microcontroller.

  • Defective USB cable:

A defective USB cable can make your Arduino board undetectable on your computer, not even detectable on your device managing director and also may cause frequent disconnection from your PC. If you lot find yourself in this circumstance, please supervene upon the USB cable that connects to your estimator and Arduino board.

  • Lacking USB port:

A dusty / rusted USB port on your calculator may crusade frequent disconnections or may foreclose uploading of the lawmaking altogether, this could exist because the rusted USB lines may non plant proper physical contact with the USB cable.

Always connect your Arduino board to a good USB port of your computer and make sure that USB port on the Arduino board too has no physical defects. If problems arise from a detail USB port, don't use that again.

  • Inspect for concrete damages on Arduino board:

Grab a magnifying drinking glass and take a closer expect at the traces and solder joints in the board, especially on USB to serial converter chip and microcontroller IC, if you observe any, try to bridge them past soldering it. If you notice any physical damage on any of the components, such equally cracks or burn down marks, you may demand to replace the component or replace the whole board.

There could be problems with microcontroller IC or with other components which are not visually inspect-able / visible or replaceable, in such case replacing the whole board is the simply solution.

  • Effort Reinstall the Arduino IDE:

Download a fresh re-create of IDE from the official website of Arduino and install information technology to your estimator. Re-installing the latest / aforementioned version of Arduino IDE may solve some installation issues with your computer.

In that location could be situations where the newer IDE didn't work well with your Arduino lath, if so delight try whorl backing to the previous version which you take been using earlier.

  • Try to upload a sketch from another reckoner:

This is the final troubleshooting step if y'all can't become your Arduino board to piece of work. Connect your lath to some other computer (with proper drivers) which is known for uploading Arduino sketches without whatsoever issues. If the outcome still persist, your board has some problem and please supervene upon your board.

By now you should be able to notice bug with your Arduino and able to fix information technology.

If you have any further questions, please comment below, you will get a guaranteed reply from us.

My nick name is blogthor, I am a professional electronics engineer specialized in Embedded Organisation. I am a experienced programmer and electronics hardware programmer. I am the founder of this website, I am also a hobbyist, DIYer and a constant learner. I beloved to solve your technical queries via comment section.