RE: Homebrew card: Magazine article on USB, a floating point PIC

["Tim Goldstein" <tgoldste-at-mlh-services.com>]

MicroChip makes available a number of floating point routines. This means
you do not need a special chip to handle the calculations.

Seems to me that you would be quite likely to miss encoder counts unless you
are watching only 1 pin and nothing else or use a micro that has timers you
drive from the encoder pulses (but that brings up the problem of tracking
direction).


Tim
[Denver, CO]

timg-at-ktmarketing.com <timg-at-ktmarketing.com>
http://www.ktmarketing.com


> There is a PIC with floating point support, programmed in
> a Visual Basic subset (I am a C guy myself...), chip for $29
> and development kit for $99
> http://www.basicx.com
>
> It also has 8 TTL  I/O lines and 8 A/D converters (or 16 I/O lines).
> I don't know much about  analog +/-  10v servo feedback, but it seems
> to me that having  8 of those simultaneously simplifies a number of
> things for an 8 axis analog servo controller.
>
> If one was building a stepper feedback, the 16 lines could be used to
> decode 8 encoderized axes as well.