If you're looking for a simple chip to offload this pulsing you should grab an ATTiny84. They come in DIP packages, they're cheap, and used in conjunction with the Arduino you have would require no extra components.
If you're looking for a simple chip to offload this pulsing you should grab an ATTiny84. They come in DIP packages, they're cheap, and used in conjunction with the Arduino you have would require no extra components.