AVR USB Programmer STK500v2 by Petka

thingiverse

This case is designed for AvrUsb500v2, an open-source Atmel AVR Programmer that's STK500 V2 compatible and features a USB interface (available here). Not only does the attached file include the case files, but it also provides a comprehensive set of documentation to help you create your own AVR programmer. While there are other AVR Programmers available (see here), AvrUsb500v2 stands out due to its speed. It's faster than USBasp or AVR910, for instance, and comes with complete documentation for circuit, PCB layouts, and a case that fit together seamlessly. Additionally, it doesn't require any third-party AVR programmer for programming itself, making it ideal for beginners without existing AVR programmers. AvrUsb500v2 is also cost-effective and uses widely available components. If you're interested in learning more about the device, its capabilities, assembly, and configuration before building it, be sure to read the original documentation from the STK500v2 device developer (available here). Advanced users can skip straight to step 2. To build AvrUsb500v2, use the PCB layout "stk-500v2-my (A4) v4" found in the "PCB Layouts.zip" archive (you might need the mirror version). The archive also contains other PCB layouts, but the case is specifically designed for v4. You can adjust the PCB as needed since the source files in Spring Layout format are included. Assemble the electronics according to the PCB layout and schematics shown in the image "schematics.gif" or in the original documentation. For drivers, use FT232 from the "FT232 Drivers (CDM 2.04.06).zip" archive, which supports all Windows versions, including Windows 7/XP. Connect the device to a USB port and install the original firmware from the "Original Firmware with Sources (WinAVR).zip" archive, depending on your crystal oscillator frequency. If you used a 7.3728 MHz oscillator, install the firmware from the "Firmware ATmega8 7372800 Hz.zip" archive. For other frequencies, compile your own firmware using the sources provided (which are for WinAVR IDE). Use PonyProg to install the firmware, as detailed in the original documentation, or use a third-party AVR programmer via the landing zones on the PCB. Finally, print the plastic case using the details from the "3D printed case STK500v2 by Mattheus.zip" archive (top and bottom parts) and secure them together with 3x16 bolts. AvrUsb500v2 has been tested and used successfully by many users, including the author. It's compatible with AVR Studio, CodeVision AVR, or AVRDude. Special thanks go to Guido Socher (tuxgraphics.org) for creating this open-source hardware programmer, and to "Petka" for improving the PCB layouts. Don't forget to print your own case for AvrUsb500v2, and good luck to all who made it this far!