pcb fabrication Feasibility Question and Advice on CAD software


Posted on Feb 5, 2014

For a hobby project I have bread boarded, I am considering using a pair detectors that operate as a single use physical barrier. When hit by a projectile, a trace is broken allowing +5VDC to to trigger a flipflop that is part of my gate logic for a counter-timer. I have envisioned this detector as a thin adhesive sticker with a thin copper trace e


pcb fabrication Feasibility Question and Advice on CAD software
Click here to download the full size of the above Circuit.

mbedded in it that forms a simple pattern to cover the area, zigzaging across the surface. Similar to the passive RF sticker tags used by retail stores for antitheft. My questions are: 1) Will it be practical to have a manufacturer print a batch of these things for me 2) I`ve never used CAD software before, is there a suggestion for a free CAD program, that doesn`t have a huge learning curve for this type of project (I`m a linux guy but thinkning W7 is more likely here ) EDIT: Photo diodes are a great idea, and I will likely try them and ask questions in a separate thread. The break-able trace allows for more configurations and keeps slew rates ( and other rates ) small. I plan to use a very small distance to track the velocity of said projectile, like 1 or 2 cm. I have a 10 Mhz clock for my timer. EDIT2: I should have added a current limiting resistor to the diagram so as not to start a fire with the trace. but I think you get the idea from this diagram.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Single Supply RS232 Interface for Bipolar AD converters
LCD Display printer cable with HD44780
Logic-Level Translators
Fuse Saver Circuit
rem bell circuit
Discrete Voltage Inverter
Measurement Related
IR Short Distance Beam Cut Detector
Using the MC145158 PLL Frequency Synthesizer
Transmission
Infrared Wireless Headphones circuit



Top