HG writes – “The concept of a low-cost fisheye digital camera is very appealing. Unfortunately, fisheye lenses still carry the price premiums associated with limited market “specialty” item status. This paper describes how a commodity door peephole can be used as a fisheye converter lens, thus bringing the total parts cost of a serviceable digital […]
Chris writes – “P.O. got so excited by all the responses from the TicTac flashlight project that he sent us another of his creations. This time it’s a LED lamp created from the scraps of an old 9v battery and three LED’s. No need to use a resistor here as he’s used three 3.5v LED’s […]
Junkmonger writes – “I decided to make this to save space on my desk and also to use my old Wacom tablet which had fallen into disuse.” – Link.
Leorick writes – “Make your own lab power supply complete with adjustable voltage and constant current source.” – Link.
Peter writes – “Here’s a page with my new MMP MkII – with sexy sleek ‘ice white combat’ design and extra features. There’s also a video demo of it in opperation.” – Link.
Drew writes – “A father and son at the middle school I teach at sent me this email: “I’m sure you will love this! My son & I built a birdhouse recently and installed a webcam inside it. In the last few days, we have had the absolutely thrilling experience of watching a couple of […]
JB writes – “This overgrown page covers all kinds of vacuum-tube electron devices, especially receiving tubes. Many experiments are suggested, and much tube lore and curious circuits are presented. “ – Link.
