Go Down

Topic: Loop Back Test Failed (Read 970 times) previous topic - next topic

elve96

Nov 16, 2012, 04:26 am Last Edit: Nov 16, 2012, 05:03 am by Coding Badly Reason: 1
Tried the test on an UNO nothing echoed back from serial monitor, when reset is pressed LED 13 (on board) blinks/flashes a few times after jumpers removed. Is the conclusion to be drawn the the board is dead or is there another soultion?

Coding Badly


When you try to upload a sketch to the board does the on-board LED flash a few times?

elve96

Thanks for your reply, yes D13 LED flashes a couple of times then the RX LED flashes a couple of times > done uploading, then the avrdude message is displayed however still won't blink an LED even onboard.

Coding Badly

Quote
then the avrdude message is displayed


What avrdude message?

xvjeko


Quote
then the avrdude message is displayed


What avrdude message?


common problem on forums, still no anwser

elve96

#5
Nov 16, 2012, 02:09 pm Last Edit: Nov 16, 2012, 02:35 pm by elve96 Reason: 1

Quote
then the avrdude message is displayed


What avrdude message?



avrdude: stk500_getsync(): not in sync: resp = 0x00

Coding Badly


Do you have the correct board selected (Tools menu)?

elve96

Hi, yes (for my board Uno and OS) I have the correct Board selected under Tools > Board > Uno, also under Tools > Serial Port > COM 3 is selected, I check that prior to verify/uploading code. This has worked well for over a year now no problems until now?











Coding Badly


The TX and RX pins should "idle" high.  Do you have a voltmeter?  If you do, with the board powered, carefully check the voltage on TX and RX.  Do they both measure 5 volts?

Go Up