After setup my project and loading my first sketch on a brand new Arduino Leonardo, the board doesn't connect with PC anymore. Plugging USB connection now I see at first "Arduino Leonardo" on COM9 (like the first time) but then it disappear from COM ports (while at first it switched on COM8 and it r…

Possible Leonardo damaged on first sketch ?

system January 26, 2013, 8:55pm 3

Thank you for advice Shpaget, but the board, now completely disconnected, doesn't connect.

Topic		Replies	Views
Arduino Leonardo, sketch upload and Pc port problem IDE 1.x	8	2155	June 15, 2022
Leonardo does not connect with PC - cannot upload new sketch IDE 1.x	17	4292	May 5, 2021
I have a problem with my Arduino Leonardo board IDE 1.x	2	778	May 5, 2021
Leonard board dropping COM port on upload of sketch IDE 1.x	4	389	June 6, 2021
Arduino Leonardo: problem with Serial Communication Networking, Protocols, and Devices	5	2221	May 6, 2021