# STK300 compatibility with AVR-PG2 Parallel Port ISP?

**URL:** <https://community.sparkfun.com/t/stk300-compatibility-with-avr-pg2-parallel-port-isp/809>\
**Category:** MicroMod\
**Tags:** avr-atmel\
**Created:** [August 7, 2005, 5:23am UTC](https://community.sparkfun.com/t/stk300-compatibility-with-avr-pg2-parallel-port-isp/809 "2005-08-07T05:23:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![RecycledElectrons](https://avatars.discourse-cdn.com/v4/letter/r/71e660/32.png) [@RecycledElectrons](https://community.sparkfun.com/u/RecycledElectrons)\
**Post date:** [August 7, 2005, 5:23am UTC](https://community.sparkfun.com/t/stk300-compatibility-with-avr-pg2-parallel-port-isp/809/1 "2005-08-07T05:23:38Z")

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I just got (2) AVR-PG2 Olimex brand Parallel Port AVR ISP programmers that I ordered. They work great with a Kanda STK200, and with an Olimex AVR-H128B. They do not work with a Kanda STK300. (Obviously, the Kanda STK300 is defective, right?)

I tried the Kanda STK300 with a Kanda STK dongle, and it works just fine. The STK300 stops working when I plug in the Olimex AVR-PGs, and starts working again when I plug back in the Kanda STK dongle. (Obviously, the Olimex AVR-PG2 is defective, right?)

It’s not plugged in backwards - the connectors are keyed, and I checked the orientation vs. other dongles and boards to be sure.

Any ideas? (Thanks in advance)

Andy Out!