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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

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 »

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 »

DSCN0048

Want to build a robot that can do computer vision, motion detection, machine learning, and that won’t break the bank? Qualcomm wants that too, and their family of robotics boards and tools makes it possible. The first approach uses a compatible smartphone as the brains of the robot and leverages... Read more »

BeagleBoneBlack01

The challenge of finding a BeagleBone Black board is likely a concern of the past. Read more »

Sensor Sentinel System Diagram

Expanding the capabilities of your Arduino is easily done by adding a shield. Plugging directly into an Arduino and typically including custom libraries for easy coding, sheilds provide a quick way to expand a project. In his Weekend Project: Cellular Sensor Sentinel, Adam Wolf uses a Seeed Studio GPRS/GSM Shield... Read more »

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