Launch Zadig and then plug in the USBasp.Note there are separate versions for Windows XP or newer versions of Windows. A tool called Zadig makes it easy to install this driver. Windows requires a generic USB driver in order to communicate with the USBAsp. Linux and OS X users can skip this section (although if you're a Linux user, make sure to read the Permissions on Linux section at the bottom of this page.) On most targets this will naturally fall into place if you lay the boards down so they are facing you as shown below. Connect the cable so that the side with the red stripe is closest to pin 1 on both the USBasp and the target. The USBasp has a dot next to the ICSP header at the pin 1 end, and your target board should also have a marking next to pin 1. You will see that one side of the cable has a red stripe, to indicate which end is pin 1. WARNING: Pay special attention to the orientation of the cable. Connect the USBasp to your target board using the supplied 6-way cable. Connect the USBasp to your computer using the supplied USB cable.ģ. Disconnect your target board from other power sources, unless you have specific requirements to power it independently during programming.Ģ. Not generally required unless you're programming brand new AVRs (see below.) If you short out this jumper, the USBasp will operate at a lower speed to maximise compatibility with some targets. The programming output of the USBasp, which you connect to the target's ICSP header using the supplied cable. However, if the target is powered independently (such as through a DC jack or USB connection) you should remove this jumper. With this jumper in place the USBasp will supply power to the target via the ICSP header. This is to allow you to update the firmware on the USBasp itself using another programmer. If you short out this jumper, the USBasp goes into a special mode that changes it from being a programmer to being a target. Place the switch in the appropriate position for the board you will be programming. Most Arduino-compatible boards operate at 5V. The USBasp supports target boards running at either 5V or 3.3V. Connect to your computer using the cable supplied. For specific uses you may need to change some of these settings. The board you will be programming is referred to as the 'target'.įor typical usage you can leave the USBasp configured exactly as it comes in the packet. USBasp is an ICSP (In Circuit Serial Programming) adapter that allows you to install new bootloaders and firmware on common AVR microcontrollers, such as those used in Arduino-compatible boards.

Usbasp programmer