Can't upload any sketch to the arduino uno

Development Tools IDE 1.x
1

So the arduino uno "L" orange led stays on without blinking or off . I've tried and research on online with most solution still can't get it to work? Please help

2

Under what circumstances do you expect it to blink ?

Can you upload sketches to the Uno ?

3

I can't even upload any sketch to the arduino uno too.

4

Hello kokomi001

Get the BLINKWITHOUTDELAY example from the IDE to get a flashing led.

5

To be honest I want it to be off because normally the "L" led will be off after you plug in with a power source right?
And i could not upload any sketch , keeps having problem.

I got another arduino uno which works fine and i notice the "L" led is off at all time.

6

But i could not upload "Any" sketch into it

7

In this case you should modify the headline of the thread.

8

Done it for you.

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  1. You're using an Uno R3. Is that an original or a clone?
  2. Is the board correctly recognised by your operating system?
  3. Which Operating system?
  4. Did it ever work? Or did it start failing because you did (by accident) do something to it? What was the last sketch that you were working on when it started failing?

If your board does not use the CH340 TTL-to-USB converter and is properly recognised by your operating system, you can run the loopback test.

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  1. Original
  2. Yes i could see the port which is "(COM6-arduino Uno)"
    3.Arduino IDE?
  3. It works before. It suddenly failed and can't upload any sketch. Last sketch I uploaded it's just to program the dc motor controlled by the bluethooth module
11

Hello kokomi001

Can you read the board info.

See in tab Tools to get this information.

12

I've done the loopback test. But the serial monitor does not send back the word. It's just empty after sending

13

It seems to be a XY-problem.

14

I dont think i saw any board info in the Tab Tools?

15

Is it hardware issue ?

16

That means that the 16U2 is broken. You can try to burn the firmware to it; to make it clear, that is not the bootloader. But when I hear motors, I suspect that you actually blew that chip (and possibly more). One wiring/design mistake and that can be the result.

17

I see ,by the way I use a L298P motor shield to control the motor. So the wiring should not have any mistake.

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image

19

If you are implying that you can't make mistakes with a L298, I bet that you're wrong :wink:

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