Category Archives: Electronics

Simple Snap-In Case for Hacklace2 v2.0

I refined the previous case a little to have less height and rounded corners. Looks much lighter now. The new design could be found on thingiverse as usual.

Simple Snap-In Case for Hacklace2

Just created a simple snap-in case for the Hacklace2. Two versions are provided: One which houses a Hacklace2 with soldered on headers, one which houses a Hacklace2 without headers. The OpenSCAD sources and printable STL files could be found on thingiverse.

A Tin Can Robot – Roundup

I put together a project roundup for the tin can R2D2: TinCan R2D2 roundup

A Tin Can Robot – Android App to Control

Finally I got around hacking a basic Android App to control my tin can robots. To quickly get a result, I used Processings Android mode and the Ketai library for the Bluetooth stuff. Regarding the effort needed for the results, they turned out pretty well. The App has the following features so far: Device Discovery […]

A Tin Can Robot – The Idea

Since R2D2 from StarWars is very popular with my kids these days,  I started working on a tin can robot which looks something like R2D2 and is remote controllable through a Android device (cell phone, tablet, ..). The body is made from a can which originally was for coffee. As you can see in the […]

Simulate Circuits Online

PartSim is a online circuits simulation. It allows one to draw and simulate schematics in your web-browser: PartSim includes a full SPICE simulation engine, web-based schematic capture tool, and a graphical waveform viewer.

CadSoft Eagle Tutorial Videos

Jeremy Blum is about to post a series of CadSoft Eagle Tutorial Videos. I think they are very well done and easy to follow. Thus, if you are about to learn Eagle, they might come in handy.

LTs Switching Regulator Circuit Collection

As noted on, Linear Technology provides a nice application note containing a circuit collection for almost all power supply needs: Battery, Boost, Buck, Buck-Boost, Flyback, Forward, High Voltage, Multioutput, Off Line, Preregulator, Switched Capacitor and Telecom. Download the application notes as PDF from LT

Multiple Time Bases on a Single MSP430 Timer Module

On, they refer to an other interesting TI app-note which describes how to use multiple time bases on a single MSP430 module: However, in some applications, multiple time bases are needed to generate multiple output frequencies. Normally this is done using multiple timer modules, but this might require upgrading to a part with many […]

Simple RS232 to TTL Level Converter

This webpage describes how to build a simple RS232C level converter using transistors.