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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

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 »

dsc_0405

The Raspberry Pi camera is a must-have accessory for your Pi. This skill builder covers the hardware, software, and highlights a few command-line arguments for raspistill to get going with the camera. Currently there are two slightly different camera modules that connect to the Pi’s on-board CSI (Camera Serial Interface)... Read more »

DSC02393

Mark Frauenfelder teaches a crowd at Engadget Expand how to build a basic circuit. Using a 555 timer, breadboard, and some common components, participants used conductive paint to design a touch-circuit on paper. We’ve captured his presentation and you can follow along at home: Originally published Nov. 10, 2013.   Read more »

Insert COIN WINNERS

MAKE’s Editor in Chief Mark Frauenfelder along with Brian Heater announced the winners of Insert Coin: Readers’ Choice went to Grow Cubes and the Judges’ Choice went to DIWire. You may recall Grow Cubes as past finalists in Pitch Your Prototype, a contest held during Make’s Hardware Innovation Workshop. The... Read more »