Archive of tools

Using the inductor tester Thumbnail

Using the inductor tester

Posted by ian.rees on May 21, 2016 in Projects tagged with , , , , , , ,

A few weeks back, we had a talk on KiCad (presentation available at http://ianrrees.github.io/KiCad_talk/ ) where we ordered some PCBs to make an inductor tester (Henryometer?) from dirty PCBs. Those boards came in this week, and a few folks have already put theirs together. This post aims to be a quick guide to the usage of the tester; if you'd like to build one yourself just let Ian know, parts cost is $15. You'll need an oscilloscope and a current-limited DC power supply to make use of it. Connections between the tester and oscilloscope are made via standard BNC coaxial cables (ava

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Debugging AVRs (without Atmel Studio) Thumbnail

Debugging AVRs (without Atmel Studio)

Posted by ian.rees on December 07, 2015 in Projects tagged with , , , , , , , ,

This post is somewhere between a guide and a collection of notes, aimed at debugging programs for AVR microcontrollers (like the ones in most Arduinos) "on target". We'll be using an AVR Dragon connected to the target micro via the normal 6-pin programming header, with a Mac or Linux PC as the host. Although this is a bit more advanced than most of our other projects, it's really quite approachable and is a very powerful technique for fixing AVR software problems. From a high level; we'll use a debugging program on a Mac (or Linux, Windows, etc) "host" computer, which communicates with a Dragon "In Circuit Emulator" (ICE) via USB to debug a buggy program running on the "target" AVR, which is presumably running in some circuit we're interested in. Small variations might apply for Windows hosts, using JTAG instead of DebugWIRE, other debugger tools (Atmel JTAGICE mkII for example), etc.

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ShapeOko Toolchain and Impressions Thumbnail

ShapeOko Toolchain and Impressions

Posted by Brian Paavo on August 11, 2012 in Talks tagged with , ,

G'day everyone.  Thank you for your kind attention during Thursday's (9 August 2012) presention on my initial playtime with Paul's Shapeoko CNC router.  Paul encourages people to use the router (with care) to MAKE! As requested, I have posted the presentation slides here.  Too late to include in the presentation, but cool tools for CNC folks to use include the OpenScam toolpath visualistion tool at http://openscam.com/ and the ubercool half-tone application that MetalFusion made to convert grayscale images into .dxf and Gcode files so that you can engrave photos into materials with a cone-shaped bit.  The utility can be downloaded free from here http://www.students.tut.fi/~syvajar3/, and examples of the output can be seen here http://allthemods.com/userinfo.php?userid=564&id=8021. ShapeOko Presentation Slides  

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