Go Down

Topic: Arduino DUE does not start until is not pressed Reset button (Read 700 times) previous topic - next topic

K5CZ

Nov 24, 2013, 07:53 pm Last Edit: Nov 25, 2013, 07:08 pm by K5CZ Reason: 1
After powered up, my Arduino  DUE does nothing. I must to press Reset to start sketch previously uploaded. Power from USB or power from barrel jack does not affect this behavior.

Is this normal? Or this mean, that reset circuit has problem?

PS: reset from USB (via DTR) starts sketch too.
Arduino Uno R3, Arduino Mega 2560 R3, Ethermega (R3), and some Ethernet Shields (R3), Chronodots, TMP36 sensors, DS18B20 sensors, LCDs/TFTs, RS232C to learn and play...

mrburnette

Title states "UNO" but text states "Due". 

I do not own a Due, but all YNO with Optiboot autorun at power-on.

I would expect a Due to autorun.  Else, how would unattended restart work?
Maybe a Due owner will validate.


Ray

westfw

#2
Nov 25, 2013, 02:30 am Last Edit: Nov 25, 2013, 08:33 am by westfw Reason: 1
If you have an Arduino older than Uno Rev3, you may be suffering from the "reset overshoot" problem described here:
http://forum.arduino.cc/index.php?topic=64256.105  These were especially common in the Uno R2.
The fix is a clamping diode (any general purpose diode) between reset and +5V (cathode on +5V, anode on reset), which you can do like:

K5CZ


Title states "UNO" but text states "Due".

I'm sorry, mistyped. My Arduino Uno R3 starts immediately after power up, Arduino Mega 2560 R3 too, but latest purchased / my new Arduino Due R3 does not start.
Arduino Uno R3, Arduino Mega 2560 R3, Ethermega (R3), and some Ethernet Shields (R3), Chronodots, TMP36 sensors, DS18B20 sensors, LCDs/TFTs, RS232C to learn and play...

Go Up