Solution: Avrdude Stk500_getsync(): Not in Sync Resp=0x30 Error for Arduino - Instructables
Flash error: avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00 · Issue #459 · ros-drivers/rosserial · GitHub
Solution: Avrdude Stk500_getsync(): Not in Sync Resp=0x30 Error for Arduino - Instructables
ATmega・ATtinyにブートローダ・スケッチ書き込み | ラビットプログラム
Avrdude: Stk500_getsync Attempt 1 Of 10: Not In Sync: Resp=0x00 - skyeyhero
Arduino の avrdude: stk500_recv(): programmer is not responding エラー - KOKENSHAの技術ブログ
ゆっくりラズパイ活用講座
4. FAQs - sunfounder
Arduino error avrdude: stk500_getsync(): not in sync: resp=0x30 solved - YouTube