Do you like using Attiny microcontrollers in your projects? In any case debugging is necessary. Atmel has a nice series of development boards available for multi-purpose debugging and interfacing. If you currently have a STK500 development board, you will face a problem because it doesn’t support any of Attiny24/44/84 chips. You have two ways: either buy STK505 adapter which is quite expensive, or develop your own.

This home made adapter supports SIP and HV programming modes and other modes that comes with STK505 adapter. If you will decide to build it here are Eagle cad files to download.