Welcome to the new ZL2PD website!
Like a phoenix reborn from the ashes, this is a
updated version of my old website, previously hosted on Geocities. When
Geocities closed down, my website evaporated too. I was busy with some
other work, and some new designs, and the website was entered on my
list of things to do.
After receiving a continual stream of email
requests for some of the material from the
old website, eventually I figured out that it would actually save me
time and effort if I rebuilt and relaunched the website. There were
also some more new designs that might be of interest, and some recently
published articles needed a website so readers could download the
It was time to get the new ZL2PD website
organised! Having so much material now to put up on the site, it was
also time for some refurbishment. A brighter cleaner look to the site.
So, here it is. It been long overdue, I know.
Thanks for your patience. I hope you enjoy the new site, and the new
This website describes a variety of projects related to my hobbies of amateur radio and electronics. These include circuit diagrams, descriptions of how they work and what they do, PCB layouts (sometimes), construction details, and software for designs which use microprocessors or microcontrollers.
For the record, the microprocessor designs here
use 8051 and AVR chips including 80C552, 80C751, 80C51, 80C52,
AT89C1021, AT89C2015, AT89C4015, ATtiny15, ATtiny2313, ATtiny26, and so
on. Almost all of my software is written in assembler.
Not only is all of my old material back from the internet wilderness, or where ever it is that website content goes when hosting servers get turned off, but this new site has also allowed me to upload a number of new designs.
These new designs include:
- A simple logic analyzer
- A new high performance audio signal generator
- A CMOS digital dial for receivers, transmitters and transceivers
- A matching CMOS programmable clock oscillator
- A pulse width modulated (PWM test generator, and
- An electronic Christmas tree for the next festive season
Complete details of all of the original projects are also now back online here. These include:
- An analog antenna analyzer, and
- A digital antenna analyzer
And there's more to come, provided I can get the soldering iron working over the camp fire.
In the meantime, I hope you enjoy the new (and old) projects and designs.
For those wanting more information about some of the projects, feel free to email me. The email is shown over on the upper right hand side of this page.
But please accept my apologies for the often slow response to your emails. Despite appearances to the contrary, I do have a ‘day job’. It keeps me very busy, and that's one reason why replies can be a bit slow at times.
The other reason for my slow response time is due to travel . I travel quite extensively, sometimes for months at a time, and occasionally into some fairly isolated parts of the planet. As a result, I simply cannot reply to emails as frequently or as promptly as I would like.
Look, even checking my email can be a challenge at
I'll have to find an elephant, or a donkey. Then, I’ve got to put the
riding harness on him, her, um... and then travel to the nearest place
with internet access...
Well, OK, so I exaggerate, but you get the idea.Still, feel free to email me. I do reply, eventually, and sometimes remarkably quickly. Provided I don't lose the oars over the side of the canoe on the way to get the elephant, provided my GPS is working, and if I can get the generator started, and if the matches don't get wet again...
The Legal Stuff
You use the information contained
on these web pages at your own risk!
You may use the information provided here for personal or educational purposes but you may not republish or use this information for any commercial purpose without explicit permission from the copyright holder.
ZL2PD provides no warranty of any kind for any information published on this website. There are no guarantees, either expressed or implied, covering any
information of any kind which may be contained on this website, or that designs and information provided on this site are free from patent or intellectual property rights of the author or third parties.
Should the information contained on this website be used by any party, that party shall, by using the information provided, be deemed to take complete
responsibility for all risks associated with that use and hold the author of this website harmless in the event of any claim, loss, liability or expense associated with any such use.
The rights of copyright over the contents of this website, unless otherwise noted, are claimed by ZL2PD.