SourceForge user OLeuthold has been hard at work creating an oscilloscope-like device from something many hackers are likely to have lying around: an Arduino Uno.
The lxardoscope project creates a pleasingly oscilloscope-like display on a Linux host system to which the Arduino Uno board is connected. With a resolution of around 3,000 samples per second, the open source project won’t replace a real oscilloscope but is noteworthy for the sheer hackiness involved.
To get a clean signal, OLeuthold explains that users need to remove the ATMega chip from the Arduino Uno board post-programming and insert it into a custom-built circuit which includes a power source with ground set to -2.5V and VCC set to +2.5V.
While it’s a clever hack, some users are questioning the viability of the project as a tool. Comments on a Hack a Day post where lxardoscope was discussed range from incredulity at the poor bandwidth of the psuedo-oscilloscope to unfavourable comparisons to the rather more polished Xprotolab project.
If the naysayers haven’t put you off, the SourceForge project page has full construction details and source code.