Arduino Nano with noname serial-USB communication chip

hey everyone

I've found and old Arduino Nano in my stuff and when i checked it noticed there is no logo or brand on its serial-USB communication chip. i connected it to my PC but it wasn't recognized. so i installed CH340G/341 driver but no good came out and my PC can't recognize it. has anyone had such a problem before? what kind of driver works for it? i attached a photo of its serial-USB communication chip, so take a look at if you don't mind. it would be a great help.

tnx

I would ask who ever you bought it from about what sort of driver is needed. If they can't supply you with an answer, demand your money back.

If Windows, go to Device Manager, and open either Ports or USB, wherever the unknown device is located. Right click, pick Properties. Go to Details tab, find Hardware IDs. You should see something like USB\VID_1234&PID_5678, maybe some other numbers. VID is the Vendor ID, PID the Product ID. Google those, like VID_1234&PID_5678, and you should see the brand and ideally the specific model in there.

If Mac or Linux, no clue =))

On Mac OS X:
Select 'Apple' -> 'About This Mac'
Click on: 'System Report...'
Under 'Hardware' select 'USB'

That will show every USB device with Product ID, Vendor ID, Serial Number, Manufacturer...

Maybe it is an FTDI or clone thereof.

Figured it'd be simple on the Apple :slight_smile:

Fair point on FTDI; to the OP, if you see VID_0403 in that unknown device, that's FTDI brand.

Windows 10/11: MS has a Device Viewer utility that provides a great view of enumerated devices:

The above answers by @dremu and @johnwasser should get you on the way; in lnux, lsusb and dmesg are your friends.

I have the same problem that laser-engraved chips are barely or not readible. This is just a suggestion for the photography of the chip: take photos under an angle as shown below.

By the way, the chip is more than likely the CH340; the number of pins in your photo matches the number of pins in mine. FTDI chips definitely have more pins; not sure about chips starting with PL or CP.

i tried this method but nothing has been shown

Device ID is:
USB\VID_0000&PID_0002\5&DE3B74C&0&2

but when i google it there is nothing

USB\VID_0000 = USB Implementers Forum - the sz development (the-sz.com)

... and now we know why this module was tossed into your stuff-box :crazy_face:

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