Draw Electronic Schematics with CadSoft EAGLE

Step 17 Done!

Thats about it, as far as this schematic goes. Turn off the PINS layer to make it less busy; Looks OK, eh? There are a couple things that have been left out that will become apparent when we try to make a PCB from the schematics, but that's a topic for another instructable.

Here's the finished, exported schematic drawing.

Comments

[Russ1234]

You have 2 diodes on Q2. Thanks for these tutorials.

[westfw]

There's an explanation for the two diodes with the original schematic here: http://www.bowdenshobbycircuits.info/555.htm#555leds.gif
Basically, the 555 is not "rail to rail" on its output, and otherwise would not be sure to turn off the "upper" transistor when in the high state.

[mauselous]

Thank you so much for the helpful tutorial. The steps you illustrated really helped me get a handle on getting from circuit to schematic to layout.

Do you have any tips on where to find additional or alternate libraries that are more organized?

[westfw]

The EAGLE user community forums are active and helpful, and frequently people will share libraries for newer parts.

I don't know about "more organized", though. I haven't seen any organized attempt to modernize/fix/organize a comprehensive set of component libraries for EAGLE, but it's likely that such a thing would be in the "costs money" realm where I wouldn't notice.)

(there is the recent Element14/Newark/Farnell effort to tie EAGLE directly to parts purchases; I haven't paid much attention to that since they're not one of my preferred dealers.)