Take an old PC (e.g. 1.8GHz P4 with 256MB RAM), install e.g. Ubuntu 10.04 LTS on it.
Now go to your PIC or AVR based home project and hook up the thing. With only three connections and the onboard peripherals of every microcomputer, you now have a large screen and keyboard easily interfaced to the $5 gadget.
Use minicom to read/write easily to the device.
I would like to take this one step further. I need the data logged, plotted and analysed
Essentially, I imagine the product of my search as a
- free and open MatLab clone, adept at
- handling real-time data streams, with intuitive interface to
- graphing one or several parameters at various time spans (e.g. the temperature of 4 sensors over the last minute or week and the setpoint). Basic control theory functions would be a significant plus (e.g. max, min, overshoot, state-space model transformations, PID tuning, controller synthesis).
What tools can I use here?