Eventually, you will be able to order the PCB from OSH Park, about $3.30 inc p&p... but the minimum order is 3 boards.(If you need this board NOW, contact me.) If there is interest, I will consider selling kits with a board and the parts to populate it.
If you want to remember this for later, or share the URL, http://tinyurl.com/OptoCouplerBreakout is another way to get here.
The following image was created using the prototype. The OSH boards are professionally made...
Ad from page's editor: Yes.. I do enjoy compiling these things for you... hope they are helpful. However.. this doesn't pay my bills!!! If you find this stuff useful, (and you run an MS-DOS or Windows PC) please visit my freeware and shareware page, Sheepdog Software (tm), download something, and circulate it for me? At least (please) send an 'I liked the parallel port use page, and I'm from (country/ state)' email? (No... I don't do spam.) Links on your page to this page would also be appreciated!
Don't forget to check out the programs for controlling the state of the parallel port at my shareware site. There are two free programs there... one for toggling bits, the other for using the computer as a timer via the parallel port.
Here is how you can contact this page's editor.
Click here to go up to general page about electronics by editor of this page. Click here to go up to general page about electronic projects by editor of this page.
Why does this page have a script that loads a tiny graphic? I have my web traffic monitored for me by eXTReMe tracker. They offer a free tracker. If you want to try it, check out eXTReMe's site. The Google panels and the search panel are also script based.
Page tested for compliance with INDUSTRY (not MS-only) standards, using the free, publicly accessible validator at validator.w3.org. Mostly passes. There were two "unknown attributes" in Google+ button code, and two further "wrong" things in the Google Translate code. Sigh.