1、Can be used to modify the fuze position, burn the boot program to the external chip and other development boards 2、The on-board buzzer and LED indicator indicate whether the burning is successful, which is convenient for designers to burn in batches 3、The development board has a simple structure and is very easy to use according to the OPEN‑SMART user manual. 4、This development board uses the SPI pins of the ICSP interface and is compatible for R3. 5、When it is directly plugged into two boards, it can be changed to a boot loader duplicator, which has strong practicability. Item Type: Development Board Material: ABS Working Voltage: DC5V Working Current: 500mA (maximum) Application: Support for R3 / pro mini (5V 16M) How to Use: The on-board buzzer, if the fuze position is successfully modified, it will sound once, and if the boot loader being started is normal, it will sound again. If it is not two beeps, the recording has failed. You can get sound instead of LED lights, which can improve combustion efficiency. When the power supply is normal, the LED indicator HEART BEAT led on the board lights up like a breathing light. During the programming process, the PROG indicator flashes until completion. If the programming fails, the ERROR indicator (red) will light up. Onboard 28P locking seat, used for Atmega168P / for Atmega8 bootloader burning. The onboard ISP 6PIN interface is used for the external programming of the board bootloader. Onboard ISP 10PIN interface. The onboard FT232RL and CH340G USB to TTL programmer interface are used to upload codes to the chip on the 28P lock seat. 1 x Development Board