# Arduino Leonardo **URL:** \ **Category:** 3rd Party Boards\ **Created:** [May 26, 2024, 5:04am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329 "2024-05-26T05:04:41Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![eslamalumital](https://avatars.discourse-cdn.com/v4/letter/e/0ea827/32.png) [@eslamalumital](https://forum.arduino.cc/u/eslamalumital)\ **Post date:** [May 26, 2024, 5:04am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/1 "2024-05-26T05:04:42Z")
My arduino is not detected by the computer With the LED flashing for the letter L ![11111111111](https://europe1.discourse-cdn.com/arduino/original/4X/7/8/b/78b7fb51db380140979983d34226afe6760f980c.jpeg) ---
**Author:** ![sterretje](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/sterretje/32/391294_2.png) [@sterretje](https://forum.arduino.cc/u/sterretje)\ **Post date:** [May 26, 2024, 10:33am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/2 "2024-05-26T10:33:34Z")
> [@eslamalumital](#): > > With the LED flashing for the letter L Is it flashing or pulsating? Did it work in the past? Have you tried to upload a basic code like the blink example? What were the results? I do not see how your topic relates to Sensors and hence it has been moved to a more suitable location on the forum. ---
**Author:** ![eslamalumital](https://avatars.discourse-cdn.com/v4/letter/e/0ea827/32.png) [@eslamalumital](https://forum.arduino.cc/u/eslamalumital)\ **Post date:** [May 26, 2024, 11:16am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/3 "2024-05-26T11:16:22Z")
Flashing is slow and it was working fine. I did not try to download basic code. Please solve ---
**Author:** ![MicroBahner](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/microbahner/32/238923_2.png) [@MicroBahner](https://forum.arduino.cc/u/MicroBahner)\ **Post date:** [May 26, 2024, 11:27am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/4 "2024-05-26T11:27:48Z")
> [@eslamalumital](#): > > My arduino is not detected by the computer It **is** detected ( running the bootloader ). Did you try to upload a sketch? ---
**Author:** ![eslamalumital](https://avatars.discourse-cdn.com/v4/letter/e/0ea827/32.png) [@eslamalumital](https://forum.arduino.cc/u/eslamalumital)\ **Post date:** [May 26, 2024, 11:30am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/5 "2024-05-26T11:30:21Z")
What is the way to download the drawing because I am a beginner or what are the steps that I must take? Thank you ---
**Author:** ![MicroBahner](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/microbahner/32/238923_2.png) [@MicroBahner](https://forum.arduino.cc/u/MicroBahner)\ **Post date:** [May 26, 2024, 11:35am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/6 "2024-05-26T11:35:53Z")
> [@eslamalumital](#): > > What is the way to download the drawing What drawing do you want to download? And how relates that to your problem? Isn't the screenshot you posted from your computer? ---
**Author:** ![eslamalumital](https://avatars.discourse-cdn.com/v4/letter/e/0ea827/32.png) [@eslamalumital](https://forum.arduino.cc/u/eslamalumital)\ **Post date:** [May 26, 2024, 11:38am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/7 "2024-05-26T11:38:44Z")
I thought he had something to do with it. Yes, the picture is from my personal device ---
**Author:** ![MicroBahner](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/microbahner/32/238923_2.png) [@MicroBahner](https://forum.arduino.cc/u/MicroBahner)\ **Post date:** [May 26, 2024, 11:49am UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/8 "2024-05-26T11:49:54Z")
> [@eslamalumital](#): > > I thought he had something to do with it. Who ? > [@eslamalumital](#): > > Yes, the picture is from my personal device So your Leonardo is running the bootloader and detected as such. It awaits that you upload a sketch. You can try with one of the examples in the IDE. The Leonardo is different from e.g. the UNO, as it appears as different devices depending on whether the bootloader or a sketch is running. ---
**Author:** ![eslamalumital](https://avatars.discourse-cdn.com/v4/letter/e/0ea827/32.png) [@eslamalumital](https://forum.arduino.cc/u/eslamalumital)\ **Post date:** [May 26, 2024, 12:00pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/9 "2024-05-26T12:00:43Z")
Thank you for caring ![2](https://europe1.discourse-cdn.com/arduino/original/4X/4/8/b/48b2722a8043716f62a025ff0ecc6a06e848bb7a.jpeg) ---
**Author:** ![eslamalumital](https://avatars.discourse-cdn.com/v4/letter/e/0ea827/32.png) [@eslamalumital](https://forum.arduino.cc/u/eslamalumital)\ **Post date:** [May 26, 2024, 12:05pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/10 "2024-05-26T12:05:13Z")
The problem persists even when the cable is removed and installed, even when the programmer button is pressed ---
**Author:** ![anon85221860](https://avatars.discourse-cdn.com/v4/letter/a/59ef9b/32.png) [@anon85221860](https://forum.arduino.cc/u/anon85221860)\ **Post date:** [May 26, 2024, 12:12pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/11 "2024-05-26T12:12:38Z")
You cannot Upload a cipher (Post No.9) ![image](https://europe1.discourse-cdn.com/arduino/original/4X/b/8/f/b8f68fb075e6a4d1dcf422397e6254c23a1f8513.png) ---
**Author:** ![MicroBahner](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/microbahner/32/238923_2.png) [@MicroBahner](https://forum.arduino.cc/u/MicroBahner)\ **Post date:** [May 26, 2024, 12:14pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/12 "2024-05-26T12:14:14Z")
I rarely use IDE 2, but never saw this Xload window. How do you upload? Simply try the upload button on the upper left corner ( right arrow). ---
**Author:** ![eslamalumital](https://avatars.discourse-cdn.com/v4/letter/e/0ea827/32.png) [@eslamalumital](https://forum.arduino.cc/u/eslamalumital)\ **Post date:** [May 26, 2024, 12:17pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/13 "2024-05-26T12:17:15Z")
There is an error that I don't know about ![3](https://europe1.discourse-cdn.com/arduino/original/4X/b/e/a/bea85b810bf5873b042ea887f88a6faa264b26d0.jpeg) ---
**Author:** ![MicroBahner](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/microbahner/32/238923_2.png) [@MicroBahner](https://forum.arduino.cc/u/MicroBahner)\ **Post date:** [May 26, 2024, 12:24pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/14 "2024-05-26T12:24:22Z")
> [@eslamalumital](#): > > There is an error that I don't know about I don't see any error there. Only the successfull upload message. ---
**Author:** ![eslamalumital](https://avatars.discourse-cdn.com/v4/letter/e/0ea827/32.png) [@eslamalumital](https://forum.arduino.cc/u/eslamalumital)\ **Post date:** [May 26, 2024, 12:26pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/15 "2024-05-26T12:26:28Z")
🙂 I will follow up on the post later thank you very much ---
**Author:** ![anon85221860](https://avatars.discourse-cdn.com/v4/letter/a/59ef9b/32.png) [@anon85221860](https://forum.arduino.cc/u/anon85221860)\ **Post date:** [May 26, 2024, 1:48pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/16 "2024-05-26T13:48:01Z")
From what I see in the 'window' (the screenshot) - the sketch is composed of nothing in setup(), nothing in loop(). Since there is nothing to Upload - it does not Upload. ---
**Author:** ![sterretje](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/sterretje/32/391294_2.png) [@sterretje](https://forum.arduino.cc/u/sterretje)\ **Post date:** [May 26, 2024, 1:54pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/17 "2024-05-26T13:54:14Z")
> [@anon85221860](#): > > Since there is nothing to Upload - it does not Upload. It will upload; an empty sketch is a sketch as well. ---
**Author:** ![MicroBahner](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/microbahner/32/238923_2.png) [@MicroBahner](https://forum.arduino.cc/u/MicroBahner)\ **Post date:** [May 26, 2024, 1:55pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/18 "2024-05-26T13:55:10Z")
> [@anon85221860](#): > > Since there is nothing to Upload - it does not Upload. Even with nothing in setup() and nothing in loop() the sketch needs 3462 bytes. And this is uploaded and verified. You can easily see that, if you mark the checkbox 'show verbose output during upload' in preferences. ---
**Author:** ![anon85221860](https://avatars.discourse-cdn.com/v4/letter/a/59ef9b/32.png) [@anon85221860](https://forum.arduino.cc/u/anon85221860)\ **Post date:** [May 26, 2024, 1:56pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/19 "2024-05-26T13:56:46Z")
Where's that in the screenshot? (Maybe I'm having an aneurysm?) ---
**Author:** ![MicroBahner](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/microbahner/32/238923_2.png) [@MicroBahner](https://forum.arduino.cc/u/MicroBahner)\ **Post date:** [May 26, 2024, 2:00pm UTC](https://forum.arduino.cc/t/arduino-leonardo/1264329/20 "2024-05-26T14:00:05Z")
> [@anon85221860](#): > > Where's that in the screenshot? The OP didn't mark that checkbox, so you don't see the detailed upload messages. But you can easily try by yourself. [Next page](https://forum.arduino.cc/t/arduino-leonardo/1264329.md?page=2)