Seeeduino Stalker + Grove sensor PIR

hi, I’m trying a seeeduino stalker and a sensor pir, when I calibrate the sensor pir with arduino duemilanove this work ok, but the problem is when I try with seeeduino stalker doesn’t work correctly. Will this problem of voltage in sensor pir?

Is that arduino duemilanove and Seeeduino Stalker have the same chip"AtMega328p"? And the same working voltage of your sensor PIR and Seeeduino Stalker ?

 best regards.

The arduino duemilanove have atmega328 and the stalker atmega328p, the difference is the “picopower”. Sensor PIR, work with 3v and 5v.