This is a nice write-up on interfacing analog meters via USB. The project is fairly complicated, and you have to have good soldering skills to make it all work. Don’t forget, an Arduino can do this kind of thing, and it might be a little easier too! [via]
In a sort of retro mash-up, we’ll make a USB device that displays PC status info on these gauges. The gauges can show CPU and memory usage, processor voltage — just about any numerical data typically displayed on small HD44780 based LCD character displays commonly used in PC case mods.
DIY – USB analog gauges – [Link]
Justin writes -
I’ve been working on this project for about 6 months now. It’s a digital multigauge based on the arduino. In its current form it shows oil temp, turbo pressure, accelerometer readings, a timer, and two misc temps. The code is freely available (though not 100% complete) as are the schematics. I designed the project to be an in car sensor display but one could modify the code and general idea to have a simple weather display, watch stocks, view environmental readings, check on a robot’s health, etc.
Arduino – DIY Digital in car gauges (multisensor display) - [Link]