I've made a breadboard Arduino and I used a CP2102 USB UART module to upload sketches. For the first time when I tried to upload the Blink sketch it worked fine, but when I tried to upload a different sketch I got the following error message:
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x53 avrdude: stk500_recv(): programmer is not responding
I don't know what I did wrong but I think the wiring is correct since the first sketch uploaded sucessfully. When I plug in the Arduino the Blink sketch runs normally, so I guess the bootloader is still here. Any suggestions?