communication problems with arduino and PC

Hello, I have a arduino mega 2560, and i used it for a RepRAp. Everything was working fine but all of the sudden yesterday i had a lot problems when sending the commands from my laptop, everytime i moved a axis an echo ocurred so i had to disconnect. Anyway, today that i was doing another test, all of the sudden my laptop turned off, and ever since both laptp and arduino do not work anymore. (my laptop sends me a Led code something about memory) pff. And now i tried the arduino in other computers (with linux and windows) and no response, i mean the leds do go on but there is no communication between them when connecting the USB. I dont know if there is any relation between this events but i want to know if i need a new arduino, any advice? :0 :disappointed_relieved:

Ummm...

When you connected the Arduino and the PC, you did do something about the voltage levels of the PC (RS-232) and the Arduino (TTL), didn't you? "Serial" and "RS-232" are not the same thing.

More at...

http://www.arunet.co.uk/tkboyd/ec/ec1ser232.htm

Please find below the sharing of my first successful implementation of Arduino Mega 2560 USB-to-Serial card on Ubuntu 10.04.

When the Arduino Mega 2560 card was connected to my Ubuntu 10.04 machine, and running “lsusb -v” on the terminal:

(1) NO MORE MESSAGE:

< cannot read device status, Connection timed out (110)

(2) NOW WE GET MESSAGES:

< Device Status: 0x0000
< (Bus Powered)

(3) NOW WE ALSO GET MESSAGES:

• < idVendor 0x2341
• < idProduct 0x0010
• < bcdDevice 0.00
• < iManufacturer 1 Arduino (www.arduino.cc)
• < iProduct 2 Arduino Mega 2560
• < iSerial 220 64932343938351309131

(4) FOR DETAILS ON INSTALLATION OF ARDUINO SOFTWARE ON LINUX UBUNTU 10.04 LTS

INSTALL IDE ON LINUX UBUNTU 10.04 LTS

wget http://clusterlab.mmu.edu.my/arduino/SUCCESS-Full-Installation-Arduino-IDE-v0022.pdf

BURN FIRMWARE FOR Arduino-Mega-2560 CHIP

wget http://clusterlab.mmu.edu.my/arduino/SUCCESS-Burn-Firmware-Arduino-Mega-2560-USBtoSerial-Card.pdf

(5) FOR EXAMPLE DETAILS ON RUNNING ARDUINO MEGA 2560 FROM LINUX UBUNTU 10.04 LTS

wget http://clusterlab.mmu.edu.my/arduino/SUCCESS-Install-Run-Arduino-Mega-2560-on-Linux.pdf

(6) FOR RELATED YOUTUBE VIDEOS

Running Part 1/2 ARDUINO MEGA 2560 on Linux - Ubuntu 10.04 RTAI

Running Part 2/2 ARDUINO MEGA 2560 on Linux - Ubuntu 10.04 RTAI

I hope the above helps. Thank you.

Wassalam.
WRY