I got this little 2w speaker Pololu - 18mm Speaker: 4 Ohm, 2.0 W
Using the Tone Buzzer fezzer code here http://code.tinyclr.com/project/149/tone-buzzer-driver/
When just connecting speaker to Di5 and gnd, works fine. Just can’t hear it because of low power.
So I tried to connect to straight 3.3v line via Mosfet breakout http://www.sparkfun.com/products/10256 like below.
However it only clicks a few times and domino reboots in a loop. What am I connecting wrong here? tia