DIY Projects

HOW TO – Server in a UPS

HOW TO – Server in a UPS

OverviewmainDan writes “The idea for Project Rogue Server A.K.A. Project Silver was started after an interesting conversation I had with a friend of mine. I had this dead ups lying around and didn’t know what to do with it. So we threw some ideas back and forth and the one that stuck was a hidden rogue server. This could be used for both good and awesome. Just think of the possibilities. A hidden file archive, hook it up to your hacked tivo, mess with the RIAA when the come search your house….. (#$))_%$)*@&^( )%^@ (NO CARRIER)” Link.

HOW TO – Making a Replacement Dishwasher Basket Wheel

HOW TO – Making a Replacement Dishwasher Basket Wheel

Wmw01Nick writes in via the MAKE forums“Someone, quite probably our 3 year old Henry, was monkeying with the dishwasher basket (or whatever the heck that part is called) and one of the wheels came loose while the machine was working. I found it partially melted against the heating element of the Dishwasher when I unloaded the machine. I could have just chucked it and accepted that the basket might wobble, or I could have gone through the process of tracking down a replacement if one could be bought without buying the entire assembly. What I chose to do was make a replacement on my Taig lathe.” Link.

DIY ECG Electrocardiograph kit

KitNot bad for $44 – lots of project to make with this – “We have found many different uses for this little kit! Applications ranging from the traditional ECG/EKG monitor to the ‘Newly-Wed’ Love Synchronizer! One of the main reasons we designed the ECG1 was to answer a long running debate here at the shop. We wired up the ‘Boss’ and finally confirmed he does not have a heart! Use the ECG1 to astound your physician with your knowledge of ECG/EKG systems. Enjoy learning about the inner workings of the heart while at the same time covering the stage-by-stage electronic circuit theory used in the kit to monitor it.” Link.

HOW TO – Replacing Capacitors in Old Radios

HOW TO – Replacing Capacitors in Old Radios

Farn03Excellent guide on replacing capacitors in old radios “Second only to power cords, capacitors are the most failure-prone components in old radios. In a professional overhaul, it is common to replace all of a radio’s large electrolytic capacitors and small paper capacitors. This article explains how to do just that. In many cases, this “recapping” is all that the radio needs to be restored to health.” Link.

Dot Matrix Printers as musical instruments…

Dot Matrix Printers as musical instruments…

Printer Buttons2Paul from Dotmatrixsynth makes musical instruments out of printers, here writes – “I’ve got an ongoing project, reprogramming the firmware in these 1985 Epson LQ-500 printers to turn them into musical instruments. I originally just wanted to make a sort of homemade mellotron, but it’s evolved into a much deeper project. These printers (like all printers) have a computer inside that operates all the motors and handles the parallel port, etc. The software that drives that computer is all on an EPROM (a reprogrammable ROM chip.) I remove the EPROM, erase it, and reprogram it with my own software that I’ve developed by reverse engineering the printer and its computer.” Link.

HOW TO – Simple Microphone Preamplifier

HOW TO – Simple Microphone Preamplifier

MicampTomi writes – “This is a simple microphone preamplifier circuit which you can use between your microphone and stereo amplifier. This circuit amplifier microphone suitable for use with normal home stereo amplifier line/CD/aux/tape inputs. This microphone preamplifier can take both dynamic and electret microphone inputs (preamplifier provides power foe electret microphone elements). The idea of this circuit is to keep the design as simple as possible to be easy to build. That was my goal when I needed a simple external microphone preamplifier for my mixer. The performance of the circuit is nothing superior but can be used with many not so serious projects.” Link.