Make a Lab Power Supply
Leorick writes – “Make your own lab power supply complete with adjustable voltage and constant current source.” – Link.
Technology
Portable Mac mini
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.
Bird house cam
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 […]
Vacuum tubes
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.
Free multimeter
Vicor is offering up a free multimeter – not sure how/what/why or what will happen to your info, but free multimeter… [via] – Link.
DIY cell phone tracking
Our pals at Popular Science have a write up of a low cost way to do your own cell phone tracking – “…Jen, is tracking me. Using a $100 kit from Mologogo (with a $6-a-month data plan), I’ve turned a prepaid cellphone into a GPS tracking device. Every few minutes, the phone transmits my location […]
500 lb Potato Battery
One of our MAKE readers sent in this potato powered battery, the site is down now, but there is a mirror – “I built a potato battery out of 500 pounds of potatoes. It powered a small sound system. I installed the battery and sound system in the back of a U-Haul truck and drove […]