I looked again and still don't see any way to use this as an h-bridge.
The pins are all logic level.

Looks like the supply is unlimited at $239 each

I looked at the documentations about how to program it.  here is the basic
model:  They supply a custom Ubuntu image on an SD card and it has all the
software you need.   The programming is done via a Jupiter Notebook.   You
connect your PC/Mac web browser to the notebook and can then run iPython
interactively inside the notebook.   I suspect you could also use a text
editor to create a python program but they don't talk about that.

They wrote a Python module that will load "overlays" (bit files) into the
FPGA.  These create peripherals that the ARM/Linux/Python system can see.
The peripherals are things like GPIO pins, Interrupt controllers, video
CODEC converters and so on.   Then there is a Python module that will talk
to the peripheral device.

There is a way to create your own overlays but you are using Verilog or VHDL

So you are not actually programming the FPGA in Python.  You are loading
some FPGA code then using Python to access what you loaded.  The things you
load are called "overlays"  From what I read the average user will NOT be
created his own overlays.  A small bit of rocket science and magic is
required to do that.

They are using the FPGA is a peripheral device that can do any of a few
dozen functions and is fast enough to do things like handle HDMI video bit
streams

At first I was excited that they might have found a way to use Python in
place of Verilog and could synthesis a Python program into gates on an
FPGA.  That would have been revolutionary.   But what they have done is
found a way to add very fast hardware peripheral devices to the Arm chip
and keep it general purpose

How could this be used in a typical robot or machine tool?   I'd say if
your machine needed to input and process uncompressed HDMI video, this is
the ticket.  If a webcams just not giving you the video quality you need
this might allow you to get high quality video directly into OpenCV and
then you process it and send it out the 1000BaseT Ethernet all for only
$239.  And you don't need to mess with Verilog as the Python libraries are
pre-written.    A high end parts picker that is grabbing parts from a loose
bin could use this

On Sat, Apr 21, 2018 at 7:45 AM, jeremy youngs <[email protected]> wrote:

> I believe this is an introductory board. I haven't seen any combining an
> fpga/arm . The price will come down I think. The bottleneck with this card
> is the I/o and processor speed. The fpga can be programmed with softdmc for
> motor control and inexpensive h bridge as the driver, eliminating expensive
> drives ( the most highly stressed part of the system) from the equation.
> The trade off in cost is $20 h bridge modules , that don't operate on
> propietary communication protocol . I'm just saying the arm / fpga duo has
> a lot of promise as an embedded systems , Even better for this system is it
> programs in Python. Admittedly porting this system is above my level of
> integration at this Time, I will keep an eye on this for down the road
> whenever I may have time and funds to apply to it.
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-- 

Chris Albertson
Redondo Beach, California
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