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David Scheltema

David Scheltema

I love to tinker and write about electronics. My days are spent building projects and working as a Technical Editor for MAKE.

Latest from David Scheltema

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Software-defined radios (SDR) are gaining in popularity, and it’s not hard to see why — using them, your computer can tune into in an enormous range of frequencies, including FM radio, unencrypted police and fire bands, aircraft transponders, and in many countries, digital TV. The most popular SDR devices for... Read more »

Main Gate

Last Sunday, the Park Day School and Studio One Art Center hosted the East Bay Mini Maker Faire. With over 170 makers showing off their latest projects and four stages packed with hours of presentations, the faire had something for everyone. One of the more exciting moments came from the... Read more »

M40_FaceRecognition_Opener-1small

Use a Raspberry Pi, camera, and free software to make a lockbox that opens only when it sees your mug. Read more »

IMG_20140710_160938

Use the Raspberry Pi and build a real-time tracker to display the values of your favorite digital currencies. Monitor Bitcoin, Dogecoin, and Litecoin to watch their values fluctuate. Add audible or physical effects for increased interaction. Read more »

Ali Kermani on his Crazy Cart

Maker Faire Detroit is sliding into day two with another full day of projects, presentations, and plumes of flame. Missed day one? Not to worry, below is a slideshow of some of the many creative expressions from the Faire’s first day. Read more »

DropLit, a sub $400 resin printer kit

Today at Maker Faire Detroit, the team from SeeMeCNC unveiled a new printer: DropLit. Resin printers do not extrude material. Rather, these printers use a resin bath –such as MakerJuice Labs– which is selectively cured by light from a DLP projector. Traditionally, resin printers are not sold as kits and... Read more »

Steve and John with the hot end and extruder.

Friday was setup day for Maker Faire Detroit and the guys from SeeMeCNC went big with The PartDaddy, a 16’2″ tall delta style printer. When a client expressed a desire to print an entire model rocket in a single print, the guys at SeeMeCNC got the idea for the massive... Read more »

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