A Crash Sensor For Delta 3D Printers

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Jul 302016
 


It doesn’t happen that often, but this is the last time that [Lucas] comes back from hours of unattended 3D printing to find a large portion of plastic spaghetti mess and a partly disassembled Kossel. The crash sensor he designed will now safely halt the printer if it detects that something…
Source: A Crash Sensor For Delta 3D Printers

Hackaday Prize Entry: Reflectance Transformation Imaging

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Jul 302016
 


Reflectance transformation imaging (RTI), or polynomial texture mapping, is a very interesting imaging technique that allows you to capture all the detail of an object. It’s used to take finely detailed pictures of scrawlings on cave walls in archeology, capture every detail of a coin for coin collectors, and to measure the…
Source: Hackaday Prize Entry: Reflectance Transformation Imaging

An open source 3D Scanner made with Raspberry Pi

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Jul 302016
 


Boris Landoni from Open Electronics writes about a new open source 3D Scanner made with Raspberry Pi: This being said, we may move on to talk about our 3D scan approach, that consists in using a linear laser, that is, one capable of drawing a vertical line having a constant luminous intensity, and…
Source: An open source 3D Scanner made with Raspberry Pi

The Prettiest Darn Arcade Cabinet You’ll See Today

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Jul 302016
 


We see an awful lot of arcade cabinets around here, and so it’s pretty unusual for a build to get much more than a second glance. But, this beauty is just too good not to mention. The entire build, named “Ready Player One” as a nod to the engrossing Ernest…
Source: The Prettiest Darn Arcade Cabinet You’ll See Today

A One LED Clock

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Jul 302016
 


Esoteric clocks are something of a staple among hardware hacker projects. If it can be made to tell the time correctly, even if only twice a day, the chances are someone’s made a clock from it. And if the only person who can read that clock is its creator, so…
Source: A One LED Clock

Fail of the Week: Magnetic Flow Measurement Gone Wrong

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Jul 292016
 


Physics gives us the basic tools needed to understand the universe, but turning theory into something useful is how engineers make their living. Pushing on that boundary is the subject of this week’s Fail of the Week, wherein we follow the travails of making a working magnetic flowmeter (YouTube, embedded…
Source: Fail of the Week: Magnetic Flow Measurement Gone Wrong

The Problem with Software Defined Radio

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Jul 292016
 


There’s a problem with software defined radio. It’s not that everyone needs to re-learn what TEMPEST shielding is, and it’s not that Bluetooth is horribly broken. SDR’s biggest problem is one of bandwidth and processing. With a simple USB TV Tuner, you can listen in on aircraft, grab Landsat images from…
Source: The Problem with Software Defined Radio

Books You Should Read: The Annotated Build-It-Yourself Science Laboratory

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Jul 292016
 


Like a lot of engineers, I spent a lot of time in libraries when I was a kid. There were certain books you’d check out over and over again. One of those was [Raymond Barrett’s] Build-It-Yourself Science Laboratory. That book really captured my imagination with plans for things as simple…
Source: Books You Should Read: The Annotated Build-It-Yourself Science Laboratory

ESP8266 MicroPython Contest Gives You the Excuse You Need

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Jul 292016
 


As if the prospect of having everyone’s favorite scripting language ported over weren’t enough to get you to install MicroPython on a spare ESP8266, there is now a contest for that. Over on Hackaday.io the MicroPython on ESP8266 contest is under way and you’ve only got until the end of August…
Source: ESP8266 MicroPython Contest Gives You the Excuse You Need

[Nick Thatcher]’s Plan-B Is A Commuter Electric Unicycle

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Jul 292016
 


[Nick Thatcher] is a serial builder of self-balancing rides. His various Segway clones and unicycles have until now suffered from one significant problem, that of portability when not being ridden. Taking one on a train was a significant undertaking, hardly convenient in a personal transport machine. His latest design, the…
Source: [Nick Thatcher]’s Plan-B Is A Commuter Electric Unicycle

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