9V Battery Clip
Use a 9V battery clip to easily connect your 9V battery to your Arduino. Use one with leads to connect your battery directly to a breadboard or the Vin pin on the Arduino. You can also buy a clip with a barrel jack for plugging directly into the Arduino.
NE556 Dual Timer IC
1s 2000mah battery
Power Cord
Center Tapped Transformer 12V 2.5AMP
AUX Cable 




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