Hi Guys I'm quite desperate. I tried (several times ...) to upload a sketch on my Arduino Pro Mini (3.3V) . The Board is connected via USB/ TTL-Adapter (PL2303-Chip). All i get is the well known message "avrdude: stk500_getsync(): not in sync: resp=0x00" and therefore a three times short blinking "…

[SOLVED] Sketch-Upload via USB/ TTL-Adapter does'nt work ...

Topic		Replies	Views
error message after uploading sketch on Arduino Pro Mini. See below. 3rd Party Boards	8	1885	May 6, 2021
arduino pro mini 3.3v cant upload IDE 1.x	23	6005	May 5, 2021
Need Help : avrdude stk500_getsync() not in sync resp=0x00 IDE 1.x	16	22966	May 5, 2021
Uploading in Arduino Pro IDE 1.x	9	2211	May 5, 2021
Arduino Pro Mini upload problem IDE 1.x	8	4789	May 5, 2021