Help with a selfmade Arduino "ATSAMD21G18"

Using Arduino Project Guidance
1

Hello,

Since a whole Ardunio would need too much space for my project, I designed my own.

On my selfmadeboard are many other things, which I do not need at the moment.
First i would like to upload a project to my board via the Arduino IDE.

On the board is an ATSAMD21G18 (Schema.PNG).

First I loaded the bootloader onto the chip. The extra LED is flashing since then. However, the device is not recognized correctly when plugged into the PC.

Message from the Windows PC:
USB device was not recognized

Does anyone know how I can fix the error? If you need more information, I will give you these of course.

Many Thanks.



Schema.PNG
Schema.PNG393×861 43 KB

2

I don't know the answer. Most self-made Arduinos will use an Atmega 328 (like an Uno).

I suggest you modify your Title (edit your Original Post) to add the type of processor you are using and the type of Arduino board you are making. That way you are more likely to attract the attention of someone who can help you.

...R

3

First I loaded the bootloader onto the chip.

Which one?

The extra LED is flashing since then. However, the device is not recognized correctly when plugged into the PC.

Does that mean the LED on PA17 is flashing?

Message from the Windows PC:
USB device was not recognized

Does it get a vendor/device-IDs? Don't ask me where Windows shows them, on Linux you can use

lsusb

to list them.