Advanced PCB Etching Tank Control

I’ve consistently had inconsistent results from etching PCBs. My best luck has been with PCB developing using a laser printer and transparency sheets. I was whiping up a batch of PCBs for my 6 meter amplifier when I decided I was really getting annoyed with figuring  out how to keep the etchant hot, but not…

TAUTIC’s 20 Pin Development Kit

I am a sucker for development kits/boards; they are cheap and if you have the room in your project they shave tons of room off your development time. Semi-recently, I was looking for a 18 or 20 PIC development board to plug into a main board. There are tons of boards that have various relays…

GSM Remote Control and Monitoring

While building my homebrew home automation I wanted a way to monitor it remotely with my iPhone as cheap as possible. Well a land line was out, despite an extensive search I couldn’t find a way to make my iPhone 4 a dial-up modem for remote terminal access. I then went on to looking for…

Cap Exploded in an ATU

I got called from a small AM station to help them out with their power problem. Their “first-gen” solid state Nautel transmitter was outputting a wimpy 400w output as it had backed itself off on on high SWR. A quick look at the transmitter showed some gross neglect as everything caked in dirt the problem…

Homebrew / DIY Boiler

Warning: Boilers can explode and kill you. See:   http://youtu.be/fCej2OQSKnY Making/using your own boiler may cause issues with your homeowners insurance, etc. Have I talked you out of this enough? I have build my own hydronic hot water heater for my “retreat”. In an attempt to have an option to run my farm house off…

Back to magnetic basics

I was picking through my pile of books which I want to get to sooner-than-later and read through a bit of Field and Wave Electromagnetics. I decided I shunned magnetics and inductors too much when I was in school and decided I needed to suck it up and become better versed. The last time I…

Raspberry Pi Give-Away

Fish Fry announced that they are giving away a Raspberry Pi B through Element 14. If you have the time there is a short interview about the Gertboard add-on or whatever you want to call it with Gert van Loo  — More information can be found on google or my favourite place https://www.sparkfun.com/products/11773 Not an…

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