1 Pcs Programmer Expansion Board, AVR ISP Shield Burning Burn Bootloader Programmer for R3 Expansion Board

This is a programmer expansion board that allows your board to modify bits, burn-in bootstrap program to external chips and other boards. On-board buzzer and LED indicator light, indicating whether burning is successful. Card designers burn in batches.According to the OPEN-SMART user manual, it is very easy to use. Using serial peripheral interface pin of the ICSP interface, compatible for R3, and can be changed to a boot loader burner when it is directly plugged onto the two boards. On-board buzzer, if the position is changed successfully, it will emit a sound, and then it will make a sound again if the boot loader is burned properly.If it's not two beeps, the burning fails.You can listen to sounds instead of looking at LEDs, s