Knocked up this little Class D amp a few weeks back..
Parts list for anyone wanting to build.
7805 +5V 1A Voltage Regulator
6.5mm Stereo RIGHT ANGLE Plug
6.5mm Stereo INSULATED UNSWITCHED Socket
10uF 16V RB Electrolytic Capacitor - 105oC x2
Prototype board to mount Regulator and Caps (ebay)
PAM8403 Class D Amp (with or without Potentiometer) (ebay)
Safety 9V Battery Clip
Black Push On Style Knob
LED 3mm Red Diffused 40mcd (for power indicator)
450 Ohm Resistor to prevent LED burning itself out..
Jiffy Box - Black - 83 x 54 x 31mm
Pro Audio Speaker Cable 1m
DPDT Toggle switch (for battery cutoff)
These are easily adapted to 4 pin (SD-GP) also 5 pin (GPX) you will no longer need the 9v battery if you do this.
If you need any help/info I'll draw up some diagrams. but its pretty simple.
Awesome volume range on a 3w 8ohm speaker form miners den..
Headphone WARNING!!! If you build it and max the volume you may damage your hearing. BE SMART!!
Parts list for anyone wanting to build.
7805 +5V 1A Voltage Regulator
6.5mm Stereo RIGHT ANGLE Plug
6.5mm Stereo INSULATED UNSWITCHED Socket
10uF 16V RB Electrolytic Capacitor - 105oC x2
Prototype board to mount Regulator and Caps (ebay)
PAM8403 Class D Amp (with or without Potentiometer) (ebay)
Safety 9V Battery Clip
Black Push On Style Knob
LED 3mm Red Diffused 40mcd (for power indicator)
450 Ohm Resistor to prevent LED burning itself out..
Jiffy Box - Black - 83 x 54 x 31mm
Pro Audio Speaker Cable 1m
DPDT Toggle switch (for battery cutoff)
These are easily adapted to 4 pin (SD-GP) also 5 pin (GPX) you will no longer need the 9v battery if you do this.
If you need any help/info I'll draw up some diagrams. but its pretty simple.
Awesome volume range on a 3w 8ohm speaker form miners den..
Headphone WARNING!!! If you build it and max the volume you may damage your hearing. BE SMART!!