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Arduino ISP AVR Programmer, micro-USB US$16.07

Arduino ISP AVR Programmer, micro-USB

With this programmer (based on FabISP by David Mellis), you can upload sketches and burn the bootloader on most Arduino (or other brand) AVR-based boards through the ICSP connector. When you use an external programmer like this to upload a sketch to your Arduino board, you can remove the bootloader and use the extra space for your sketch.

Note: It only works for AVR ISP chips with a maximum of 64K Flash memory. It won't work on ATmega1281/1280/2561/2560, e.g. the Arduino Mega.

The Arduino ISP can be used also to write the bootloader to your Arduino, so you can recover it if you accidentally have corrupted the bootloader, or if you have installed a new ATmega microcontroller in your Arduino board and you want to install the bootloader so that you can upload a sketch in the usual way.

The board connects to your PC via a micro-USB interface and receives its 5V operating voltage from the USB. It connects to your Arduino board via the 23-pin ICSP connector. The board has a female header on the bottom and male pins on top, so you can either plug it onto an Arduino board that has a male ICSP header, or use jumper wires to connect to a breadboard or other system that doesn't have the correct header.

Note: Not all Arduino boards have ICSP header pins installed! Some have only through-hole pads. You may need to get some dual-row header pins and solder them to your Arduino board first. Check your Arduino board to make sure.

Arduino ISP Usage

Connect the Arduino ISP to your Arduino board's ICSP headers (the picture to the right shows the Arduino ISP mounted on an older version of the Arduino Uno SMD for example purposes). 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 ArduinoISP under the Tools → Programmers menu (not Arduino as ISP). To upload a sketch using the Arduino ISP, choose the 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: Support for the Arduino ISP was introduced in Arduino IDE 1.5.7. If the IDE on your system is an earlier version, go to the Arduino Downloads Page to download an updated version.

See the Resources section below for links to a usage guide and tutorials.

Advanced users also can use the Arduino ISP to program fuse bits on ATmega microcontrollers (outside of an Arduino, e.g. on a breadboard). Programming fuses allows you to configure the internal peripherals and the behavior of the microntroller. For example, you can choose the clock frequency, programming the watchdog timer and much more. This type of usage requires experience and attention because setting these fuses in a wrong way can put your microcontroller into an irrecoverable state.

Configuration Jumpers

The Arduino ISP has two solder jumpers for configuration purposes. Typically they can be left in their default positions.

The SJVCC jumper, closed by default, allows the Arduino ISP to provide 5V power supply to the board that is being programmed. If you would prefer always to power your target board separately, you can open this jumper. Note that in some cases the target board will need to be powered separately anyway, e.g. when burning the bootloader to an Arduino Leonardo, it will need an external 9V power supply.

The SJFAB jumper, open by default, allows you to update the firmware on the Arduino ISP's own ATtiny44 microcontroller. Should you ever need or want to change the ISP's firmware, close this jumper. Of course, you will need another piece of ISP hardware to do the programming.


Two common errors you may encounter when using the Arduino ISP are:

Verification error problem
This error may occur if the target board isn't receiving enough power via USB. Powering the target board separately should rectify this.

Unknown USB device
Some USB ports cause problems during communication. Using a different USB port usually clears this error.

Arduino ISP Resources

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This product was added to our catalog on Friday 01 August, 2014.


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