I’m the author of the PWM Logic generator software. Unfortunately due to a lack of spare time, the project came to a grinding halt and I took down the website some time ago. For those who are interested, the source code is available on GitHub:

https://github.com/joosthaverkort/PWMLogic

Enjoy!
Kind regards,
Joost

(Ps. I know it’s been a while, but I hope this might help a Googler or two 😉 )

Hi Azzythehillbilly,
Thanks for the comment. Very good input.
I wish to make my point clear that Saleae Logic is a combination of hardware and software. They’ve put the software freely downloadable does not means the software is public domain. It is still copyrighted work and I believe Saleae has invested majority of the work into the software. These have to be compensated. Therefore value of the hardware portion solely based on the BOM cost is unfair. Being in the software industry for over 15 years I think the listing price of $149 is not absurd, and considering the convenience and market value for a logic analyser this is pretty much affordable, not for the hobbyist market though.
It is indeed embarrassment when I object the piracy of Saleae Logic yet published this article with a clone. But it is also my intention to find the clone another usage so that I can use it “legally”. I actually bought a bus pirate and a scope and I have never use the logic analyser ever since. Meanwhile I’m saving for a Logic 16.
BTW I’ve heard Saleae is currently working on a low cost logic analyser (Arduino firmware) for the hobbyist market.
Thanks for the comment, again.

What exactly do you mean by that. The Saleae software has not been patented or protected in any manner. If you download the software from Saleae site it does not ask you to sign any agreement regarding its application. I do not believe that either Saleae device or the software has been registered.

The hardware and scheme is actually originated with the manufacturer of the uProcessor, Cypress who released this to the public domain. The software is very good indeed, hands down, but it is Saleae who chose to make it public and is too late to impose any condition on it now as the SW is already out in the open.

If Saleae had a half decent price on their products many would prefer to buy from them but no, they choose to sell it for an astronomical price with some rather useless features like Aluminum case. A better device (with a buffer HC245) is sold for around 10US$ ex China. Having been in the PCB manufacturing business for over 10 years I can estimate that the whole thing ( China version) is worth 6-7 US$ max.

I am very strongly against SW/HW piracy but cannot stand sellers who try to gouge buyers and will falsely knock competitors/Clones. Excessive prices are the prime reason for privacy and the seller knows that. But, calculates that this price will maximize his profit.

And the final irony is that the author of the above article Baoshi himself actually uses the clone but likes to berate the buyer of the clone as being a criminal.

I strongly object.

Hi, I’ve put up a local mirror at the end of the post.

Yap the website is down. Let me check if I have a backup… Will post the link here.

Let me check… hmm… 74LVC245 pin1 is DIR.