unable to flash grbl to arduino uno r3 clone

Try a genuine Arduino. Clones often have bad USB circuitry (ch340 instead of ftdi or at8u4) and often nonstandard bootloaders

 

_Z

Also consider a plug and play solution, with support included, like the Blackbox (see docs.openbuilds.com/blackbox)

 

if you have an ISP programmer handy you can reload the bootloader. I find some Pro Mini's have the wrong bootloader from the factory.

 

like this
AVR ISP USBASP Programmer Downloader + 10PIN - 6PIN Adapter

 

When you say "original" do you mean the actual official Italian made Arduino? Arduino Uno Rev3

I flashed one in 2016, then updated it when necessary and have never had a problem.

Be careful with Amazon. The resellers there are known for selling counterfeit merchandise.

 

How are you trying to flash it? I recently flashed a knock-off Arduino nano I had lying around to test some limit switches and I flashed it with Openbuilds Control.

 

Have you tried flashing it with the OpenBuilds Control software? Or were you using the Arduino IDE?

 

WHen you say you had X and Y, but no Z, were you able to control the X and Y? If so, did you perhaps flash the two axis laser version? If you want Z control, you need to flash a three axis version.

If that is not working, I bet something else is wrong. Maybe the wrong com port is selected or something. Iff you want to go down the more complicated route, you need to download the Arduino IDE and follow the steps at the Github site. Compiling Grbl

Before you do that, download the Arduino IDE (you will need it anyways) and see if you can load the Blink sketch. If you can successfully do that, then load the grbl file.

 

Did you install drivers for the Arduino? When you download the Arduino IDE it installs drivers I believe. https://www.arduino.cc/en/software If you have never installed the Arduino IDE, I would start there. Then try flashing the board with Openbuilds Control. All my computers have the Arduino IDE on them and I have never had a problem with installing GRBL.

Also, there is this you can try. docs:blackbox-4x:install-drivers [OpenBuilds Documentation]

 

What Windows Software? OpenBuilds? Arduino IDE? If you have all the software and recommended drivers on your computer, then the OpenBuilds Control sofware should be able to upload GRBL to the board. If you have the Arduino IDE, open the Arduino IDE, connect your arduino uno to your compter, and then pick which board you are using and what COM port in the Arduino IDE Software. Then cut and paste this code that is between the dashed lines (but do not include the dashed lines) into the Arduino IDE:
https://docs.arduino.cc/built-in-examples/basics/Blink
-----------------------------------------------------------------------------------------------

/*
Blink
Turns an LED on for one second, then off for one second, repeatedly.
Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
the correct LED pin independent of which board is used.
If you want to know what pin the on-board LED is connected to on your Arduino
model, check the Technical Specs of your board at:
https://www.arduino.cc/en/Main/Products
modified 8 May 2014
by Scott Fitzgerald
modified 2 Sep 2016
by Arturo Guadalupi
modified 8 Sep 2016
by Colby Newman
This example code is in the public domain.
https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink
*/
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}


------------------------------------------------------------------------------------------------------------------------------------------

If it successfully loads, then the built in LED will blink on for a second then off for a second. You will also get a message that it loaded successfully.

If that works, then you know your computer and board are working and communicating. If you are not able to do this, then you may need to hire someone, or the easiest solution of all is the plug and play BlackBox Motion Control System

Getting grbl up and running bug free on a cobbled together controller with an Arduino board of any kind is not a beginner project for someone new to Arduinos. How do I know? Because I did it myself when I built my first CNC. It was a lot of work. However, I had done other projects with Arduino boards prior to that.

 

you do have to select the Uno under Boards and the correct port otherwise it won't work.

 

I just dug up an Arduino Uno that I used for another project. I plugged it in and selected COM3 which is what the OpenBuilds software detected.



Then I selected Firmware Flashing tool from the Wizards and Tools tab



Then I chose the Blackbox tab then selected 3 axis CNC/Laser and clicked on Flash.



And it was successful.




If for some reason you tried to flash the Arduino Uno with the Blackbox X32 firmware, you will most definitely fail. Is this what your error looked like? By the way it took me two attempts to reflash back with the regular Blackbox firmware.

 

It should also be mentioned that the computer I used has all the drivers loaded that are recommended under the Black box Documents I linked earlier above and I have the Arduino IDE software on it as well.

 

X32 is not arduino based. Very different generation.

The older BlackBox 4X was Uno compatible

 

Yeah, I did it to see what the error code would be thinking that may be his problem. I have never had the Blackbox 4x selection fail in flashing to any Arduino product I have tried it on.

 

Yes. I would try to do that.