On 12/03/2011 16:11, Olin Lathrop wrote: > I have done several PIC 16 projects using floating point. FP is often a > good choice for PID control calculations since the dynamic range of value= s > can be quite wide or unpredictable. Fixed point values would have to be = too > wide to handle the wide dynamic range with enough meaningful bits left ov= er. Yes, I have just finished a project using a 16F690 with PID control of a=20 heating element which used floating point. No problems regarding speed,=20 with various other stuff (one wire, LCD, buttons etc) going on, works fine. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .