The Arduino ISP is a tiny AVR-ISP (in-system programmer) based on David Mellis' project FabISP (http://fab.cba.mit.edu/content/projects/fabisp/). With this programmer you can upload sketches and burn the bootloader on any AVR based boards, including Arduinos. By uploading a sketch with an external programmer you can remove the bootloader and use the extra space for your sketch. The Arduino ISP can also be used to burn the Arduino bootloader, so you can recover your chip if you accidentally corrupt the bootloader. Burning the bootloader is also necessary when you use a new ATmega microcontroller in your Arduino, and you wish to use the bootloader to upload a sketch via the USB-Serial connection.
Connect the Arduino ISP to your Arduino board's ICSP headers. Make sure to match the orientation of the plugs by looking at the white dot on the corner of the connector. Once connected, open the Arduino IDE and select "Arduino ISP" under the "Tools > Programmers" menu. To upload a sketch using the Arduino ISP, choose "Upload using programmer" option in the File menu, or use the keyboard shortcut: "CTRL+SHIFT+U". If you want to burn the bootloader into the AVR microcontroller select the "Burn bootloader" option under the "Tools" menu. Note: The Arduino ISP is only supported by Arduino IDE 1.5.7 or later.
The Arduino ISP is able to provide the 5V power supply voltage to the board being programmed. If you want to power the board through the ISP you have to close the SJVCC jumper on the board.
The firmware on the ATtiny44 inside the Arduino ISP can be updated or replaced. To program the ATtiny you have to close the SJFAB jumper and connect an ISP programmer in the ICSP connector.
- Supply Voltage: 5V
- Microcontroller: ATtiny44
- Connector: micro USB
- Connection with the target board: ICSP