[Solved] Clone arduino Mega 2560 - no serial port DCcduino Mega 2560

[zasf]

Had a problem on OS X Yosemite with CH340G chip. Installed the official driver first - http://www.wch.cn/downloads.php?name=pro&proid=178. This didn't work, so I tried to manually load the installed kext and noticed this error in the console:

20/10/2014 00:43:28.492 com.apple.kextd[19]: ERROR: invalid signature for wch.usb.usb, will not load

After a big of googling found this article - http://www.cindori.org/enabling-trim-on-os-x-yosemite/

Just to summarise. On Yosemite:
1. install the driver
2. Run this:

Code: [Select]

sudo nvram boot-args="kext-dev-mode=1"
3. Restart

thanks, after following your advice, it shows up under /dev/tty.wchusbserial410

[RobvdVeer]

Another thank you for this fix. I can confirm it works on Yosemite 10.10.3 beta. 

[spondootre]

I realise that this is an older post but thank you!!  Driver and code works fine with Yosemite, bought x3 "disposable" uno from eBay as didn't fancy experimenting with my original and they wouldn't work with mac and the CH340g chip but this worked a treat, thanks for sharing.

[dominate]

Hi,

Do you have usb chip driver files? From the link below i cant reach it i think link is broken .

http://www.wch.cn/downloads.php?name=pro&proid=178

[Patbar]

SIMPLY FOLLOW THESE ON WINDOWS-7
-> Download http://www.wch.cn/downloads.php?name=pro&proid=5 and unrar (CH341SER\)
-> DISCONNECT USB CABLE OF BOARD
-> RUN \CH341SER\setup.exe
-> CONNECT USB CABLE
Here You Go...

DCcduino MEGA 2560 with WIN7_64 ... I tried installing CH341SER.EXE but still does not recognize the device ...

[ChilliTronix]

DCcduino MEGA 2560 with WIN7_64 ... I tried installing CH341SER.EXE but still does not recognize the device ...

Where did you get the download from?

[Patbar]

Where did you get the download from?

From Here http://www.wch.cn/downloads.php?name=pro&proid=5

[ChilliTronix]

Well that is the correct place though you can also change the end of the link to 65 for a slightly different package.

What happens in device manager when you connect the device?

[Patbar]

Well that is the correct place though you can also change the end of the link to 65 for a slightly different package.

What happens in device manager when you connect the device?

USB Device not recognized.
From the Device panel :"Unknown device"   

[ChilliTronix]

Ok, and presumably it goes away when it is unplugged?

Download the zip file version of the driver, unzip and then update the driver, point it at the extracted zip file and see if that helps.

[Patbar]

Ok, and presumably it goes away when it is unplugged?

Download the zip file version of the driver, unzip and then update the driver, point it at the extracted zip file and see if that helps.

I downloaded the .zip files and reinstalled the driver but the problem remains . when I remove the DCcduino the unknown device shown in the device panel disappears

[Patbar]

the same port with the same cable works well with the arduino UNO ( Sunfounderclone ).

[Patbar]

It Works! but really do not know how I did it ... I have installed and uninstalled several times CH341SER ... then changing input usb win7 has recognized the device as  " USB -serial CH340 "!

[ArduinoCC_Guy]

Thank you Stan and Peter. I hated the thought of booting to Windows every time I wanted to program the Arduino.

Take care,
Pete

[rich4321]

Had a problem on OS X Yosemite with CH340G chip. Installed the official driver first - http://www.wch.cn/downloads.php?name=pro&proid=178. This didn't work, so I tried to manually load the installed kext and noticed this error in the console:

20/10/2014 00:43:28.492 com.apple.kextd[19]: ERROR: invalid signature for wch.usb.usb, will not load

After a big of googling found this article - http://www.cindori.org/enabling-trim-on-os-x-yosemite/

Just to summarise. On Yosemite:
1. install the driver
2. Run this:

Code: [Select]

sudo nvram boot-args="kext-dev-mode=1"
3. Restart

Hi dmatyukhin, this cheap Chinese imitation is driving me crazy. I have the same problem getting the stupid USB driver to work on the Mac. The driver works fine on OS X Lion, but not the 4-bit OS X Yosemite,
I followed your method and it still doesn't work. I am wondering when you said yours works, do you have the app Trim installed? Is it necessary to have Trim prior to apply your method?

Thanks in advance.