PLEASE NOTE: Final Project Experiments involve weeks for:
I wanted to create a bus system LED and motion sensor components. The boards are to light up when motion is detected. This would combine the assignment weeks for: Electronic Design, Input Devices and Networking and Communications. This would also create a working prototype for half of my final project.
Designing in Eagle 7.5.0 Light
Drawing the schematics was much easier than designing the board layouts for me. I sometimes would pick the wrong components (surface mounted items are red while drill-holed items are green and white), but I knew the purpose of the drawing was to create a precise representation of the actual circuit board to be programmed. Here's my process:
The above schematic is my re-drawing of Neil's hello.bus.45.bridge board. Below is the corresponding board layout, as traces:
Please note that wires were added due to a missing trace on this re-drawn board.
I was able to draw those on my own but when it came to adding/subtracting components for the other boards, I ran into problems, especially with the board layouts. I kept isolating power and ground on my micro-controller, making necessary components obsolete because the pins weren't accessible - too many bad moves wastes precious time:
I sought help from our lab coordinator, Zuberi Moore, and learned the zen of circuit board design. Here's the schematic and board layout for my bus node (this link connects to Neil's design), with a few exceptions:
Here's my chicken scratch with pen & paper -it helped me figure out how to route my traces! But so did the auto-router tool. I used it 4 or 5 times actually, while zooming in to edit traces that were too close to the component pads and deleting wacky connections.
To turn off Layers
Exporting the Image:
I've learned A LOT this week and look forward to applying this knowledge to my final project!Types of USB cables: http://www.velocitymicro.com/blog/usb-3-1-vs-usb-type-c-vs-usb-3-0-whats-the-difference/
Input: Motion Sensor & Output: LED Array
My simplified experiment that was successfully completed in the week for Networking and Communications, offers a rapid prototype for an initial iteration for a full scale device: The LED strips will be connected to the circuit boards (which will be encapsulated in waterproof material doubly), which includes the motion sensor and phototransistor. Solar panel(s) and an external battery will also be added during the spiral development process, as I scale up to a fully functional device.