After you’ve taken the plunge and decided to learn how to etch your own circuit boards, you’ll quickly find even the simplest boards are still out of your grasp. This is due mostly to t… ...

Next is the complete schematic diagram of a little Arduino board for your everyday projects. Use the Atmega328P chip, with Arduino bootloader loaded by you, as the brain of this economical circuit.

Arduino already include on-chip PWM controllers, making this effectuation easy. In short, PWM is a way of digitally encoding analog signal levels. MyDuino! Looking for a solution to build this circuit ...

1 Download the Arduino schematic and circuit board files from arduino .cc. Use the free version of CadSoft Eagle (from cadsoft.de) to modify them for your particular creation.