![]() Select Tools > Programmer > Arduino as ISP. Select the target board in Tools > Board. Open File > Examples > 11.ArduinoISP > ArduinoISP.Ĭlick Upload to upload the sketch to the board. Select the port the board is connecting to in Tools > Port. Select your programmer board in Tools > Board, for example Tools > Board > Arduino AVR Boards > Arduino Uno. Now that the board connections are set up, we can use Arduino IDE to burn the bootloader.Ĭonnect the programmer board to the computer. Step 2: Burn the bootloader in Arduino IDE Connect PIN 10 on the programmer board to any RESET pin on the target.Įxample: Using an UNO to program a Mega (ICSP pins).Connect every programmer ICSP pin except RESET to the equivalent ICSP pin on the target.Note that the orientation of the header relative to the USB port is different on the Nano. Example: Using an UNO to program a Nano (digital and power pins). When the boards are connected, you can proceed with burning the bootloader in Arduino IDE. Option A: Using the digital and power pinsįor each row in the table below, connect the programmer pin to the corresponding target pin. In this case, change the line #define RESET 10 to use a different pin. On some boards PIN 10 may not be available. To use an Arduino AVR board that’s not included in the table below, check the pinout diagrams in Arduino Docs to find which pins to use for CIPO, COPI, and SCK. You’ll need female-to-female jumper cables for these pins. CIPO, COPI, and SCK are available in a consistent physical location on the ICSP header. These are the most commonly used pins on Arduino, and you’ll only need six standard male-to-male jumper wires. On many boards (including UNO, Mega, and Nano), these are available in two locations: The easiest way to burn the bootloader to classic AVR boards (UNO, Mega, Nano, etc.) is using a second Arduino AVR board as a programmer, which is the method that will be covered below.ĪVR boards are programmed with the SPI interface (COPI, CIPO and SCK signals). ![]() Whether the bootloader has been corrupted or intentionally has been removed, it can be restored by burning (also called, flashing or programming) a new bootloader to the board. It comes preprogrammed on the microcontrollers on Arduino boards. The bootloader is a small piece of software that allows uploading of sketches onto the Arduino board.
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