Ok, riddle me this. I have already purchased stepper driver chips, and am
now looking for an adc for an infrared rangefinder, and a way to "set and
forget" the pulse, direction, etc. for the steppers. So far all reasonably
powerful solutions are in the $5-15 range.
This mcu could do the job of off-loading all timing and monitoring, and
do the a2d as well.
My question is, why haven't I been using these for every component of my
little scullery maid? Is it the programming overhead? Being new to the
hobby, and a reasonable proficient programmer, I'm curious.
Why is there a market for all these (seemingly) overpriced solutions?
I guess that's my point. You suggest a cheap general purpose MCU that
is quite capable of solving the problem for which more expensive specific
chips are currently being offered.
I'm not sure the extra programming overhead is an issue... you code once
I'm following up a bit late on this... I went to microchips site to find
they are sampling PIC16F777's... I picked up three, and can't wait to
Features 14 channels of 10-bit adc, and low-power stuff.
I really like Microchip's MCP3208.
You can get a couple of free sammples from Microchip's
They communicate to the host processor via SPI. I have
sample code on my site which uses this chip.
D. Jay Newman
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