EAGLE CAD: Board DesignĬlicking the “Generate/switch to board” button is where the real fun begins. Positioning doesn’t matter, so place things in a way where the connections are easy to make. You can also use the ‘name’ tool to add connections between components anywhere on the schematic. With all of the components added, I then used the ‘net’ tool to form the electrical connections. The first step was to insert all of the individual parts into the schematic. For this board, there are only a handful of components: Similar to the way mechanical CAD programs use 2D sketches as a base for 3D extrapolation, EAGLE uses an electrical schematic as a base for creating a board layout. I followed SparkFun’s EAGLE tutorials, which are quite well written and easy to follow. This was my first time using EAGLE, and I found it surprisingly easy to pick up.
Because the Arduino’s built-in reset button is going to be hidden in the case, I also added a 2-pin header for an optional external reset button.
#Eagle arduino nano schematic series
In addition to the Arduino, I added a 470 Ω resistor in series with the data line to prevent the strip from drawing power via USB and a 1000 ♟ capacitor to smooth power from the external power supply. In the interest of keeping things simple, I decided to use a pre-built Arduino Nano and some female headers rather than building my own circuit with a standalone ATMEGA chip. Since the LED strip is self-contained, all the PCB needs to do is house the Arduino and source the 5 V power. For a barebones setup, all you need is the LED strip (which comes with WS2812B LEDs and 0.1 ♟ capacitors), an Arduino, and a 5 V power supply that can provide enough amperage. I’ve never designed or made a custom printed circuit board (PCB) before, so I wanted to keep things simple.įrom a hardware perspective this project is actually pretty basic. This post is part of a series on creating a DIY ambilight using Adalight and WS2812B LEDs. Now it’s time to wrap up this project by getting everything off of the breadboard and onto a dedicated PCB in its own custom case!
So far the hardware side of the Adalight setup has been a nest of wires on my desk, with the Arduino on a breadboard and the power running through a terminal block.
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