Arduino Forum

Using Arduino => Installation & Troubleshooting => Topic started by: neilherbertuk on Feb 13, 2015, 02:49 pm

Title: Ardiuno Uno R3 Blown USB Chip
Post by: neilherbertuk on Feb 13, 2015, 02:49 pm
For the past few weeks I've been working on a project using an Arduino Uno R3 (SMD), unfortunetly a screw came loose within the project box and shorted the board. The board is no longer recognised on a win 8 enviroment using USB, I've also tried the loop back test without any luck. The board doesn't seem to be damaged in any other way, I get a power on light and the board doesn't generate any heat when plugged in.

(http://s29.postimg.org/m8pxefcz7/2015_02_09_14_22_21.jpg) (http://postimg.org/image/m8pxefcz7/)
Taking a closer look at the board the ATMega16u2 USB Chip has blown!

I don't really want to get rid of the board unless I'm absolutely sure it's not working. I can't find any relavent instructions regarding this, does anyone know if it is it possible to use an FTDI programmer to bypass the on-board USB?

Neil
Title: Re: Ardiuno Uno R3 Blown USB Chip
Post by: CrossRoads on Feb 13, 2015, 03:38 pm
Sure, connect it to the D0, D1 pins, connect DTR thru a 0.1uF cap to the Reset pin, Gnd to Gnd,. +5 to +5.
Title: Re: Ardiuno Uno R3 Blown USB Chip
Post by: neilherbertuk on Feb 13, 2015, 04:12 pm
Thanks CrossRoads! I've hooked it up but it looks like the board is dead. The screw short must have done some other damage to the board.

(http://s3.postimg.org/xaxnz6df3/2015_02_13_15_08_08.jpg) (http://postimg.org/image/xaxnz6df3/)
(Picture for the sake of documentation incase anyone comes across this topic and it's of use.)

I've just tried to upload the blink sketch to test the board but all I get from the IDE (1.6.0) is

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding

Thank you for the info with hooking it up to FTDI.