In this episode I will be repairing my AVR ISP MKII programmer by replacing the on-board boost converter (TPS61020) and I will also upgrade the 6 pin ISP programming cable to 1m length.

UsbProg-SHARP Clone Of AVRISP mkII

This project is an instance of the UsbProg project created by Benedikt Sauter. Bene released the schematics, board layout and firmware as an open-source project. Dean Hall took that project and made these modifications:

  • Changed CONN1 to a type Mini-B receptacle (so it would be surface mount).
  • Changed most parts to have surface mount packages (except jumpers and headers).
  • Added capacitors C1 and C2 for decoupling.
  • Added CONN3 25 pin header for Port A (the ADC inputs).
  • Added JP3 jumper header to choose which pin controls LED1.

With a bit of work the board can be etched at home and you’ve got yourself a home made programmer. Or you could just pay $30 and get the original mkII from Atmel.( I chose the original one 🙂 )

UsbProg-SHARP Clone Of AVRISP mkII: [Link]

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