Dear, I am litlebit new here. I 've got a problem with my MINI PRO. I am using it for a CLOCK. Every time I start and stop the Serial Monitor the Clock Initializes the program. Does any body know what causes the problem?

[image] stef69: Every time I start and stop the Serial Monitor the Clock Initializes the program On the UNO and most Arduino boards, the USB-Serial chip includes a DTR ("data terminal ready") line that goes low each time the USB connection is established with a host. This briefly pulls the Ar…

UNO initilize after start serial monitor

Projects General Guidance

jim-p August 15, 2025, 2:52pm 8

The version of Putty I have (0.73) doesn't have a DTR setting or RTS setting. I use it all the time and it does not reset the board.

Topic		Replies	Views
Uno resets when Serial Monitor is not used Programming	14	1906	May 5, 2021
Evitare reset ARDUINO UNO con apertura serial monitor Software	7	2149	May 7, 2021
Ständige Reset Deutsch	18	4580	May 6, 2021
Uno, prevent reset when open Serial monitor IDE 1.x	4	1594	May 5, 2021
DTR = reset ? Networking, Protocols, and Devices	8	14795	May 6, 2021

UNO initilize after start serial monitor

Related topics