►
From YouTube: Pi Flows: PowerFx for Internet of Things
Description
Challenged with writing software for IoT hardware devices? In this 12-minute developer-focused demo, Eswar Prakash shows how you can remotely control hardware via Canvas app. On site, create a web app (Pi Flow) with an internal API that understands Power FX language, has local storage and controls hardware device. At the control center, create a Canvas App that communicates with the web app’s API via a custom connector. Join the 2 environments using Azure Hybrid Connections.
This PnP Community demo is taken from the Microsoft 365 & Power Platform Development Community call recorded on May 25, 2023.
Demo Presenter
• Eswar Prakash (Resonate) | @eswaratwork
Community Call Conversation
• aka.ms/May25-Demo1
Supporting materials
• Playlist - Physical Computing with Power Platform | https://www.youtube.com/playlist?list=PLB6bnbyeFRLlU1lcmhLU861OnuDeW-4IH
Learn more
• Microsoft 365 Unified Sample gallery - https://aka.ms/community/samples
• Microsoft 365 Platform Community in YouTube - https://aka.ms/community/videos
• Microsoft 365 Platform Community - http://aka.ms/community/home
A
B
Excited
to
show
you
what
I've
been
working
on.
This
is
purely
from
a
Power
Platform
perspective
and
people
who
have
been
working
with
Power
Platform.
They
already
know
what
powerfx
is,
but
I
will
introduce
you
to
some
some
interesting
things
about
that.
So
who
am
I
I'm?
My
name
is
I
live
in
a
place
called
Yorkshire
in
the
UK
I'm.
B
So
what
is
this
about
so
I'm
going
to
be
talking
about
iot
today
right
and
it
is
challenging
if
anyone
has
ever
tried
to
do
a
bit
of
iot
it's
challenging
and
the
biggest
challenge
I
believe
is
skills
required
to
write
software
for
the
hardware
devices
that
become
a
part
of
your
circuit
right.
So
not
all
of
us
are
able
to
do
that.
I
couldn't
you
know
conveniently
and
and
easily,
but
we
are
okay
to
write
local
apps.
B
No
people
who
have
been
doing
power
effects
know
that
it's
it's
pretty
easy
to
build.
Apps
using
local
languages
like
that,
a
powerfx
is
obviously
the
the
you
know,
de
facto
local
programming
language
at
the
moment.
So
the
question
in
my
mind
at
that
point
of
time
was,
can
I
somehow
bring
all
of
this
together
right?
B
B
I
had
said
put
together
for
myself,
which
I
wanted
to
meet
right
in
the
in
the
first
release
itself,
which
is
that
that
whatever
app
I'm
building
should
be
able
to
leverage
existing
citizen
developer
skills,
and
it
should
also
be
able
to
interface
with
Power
Platform
services,
like
you
know,
canvas
apps
and
dataverse,
and
all
that
it
should
be
cross-platform.
And
the
reason
is
that
you
know
it's
not
just
the
fact
that
the
app
should
should
run
on
a
local
PC.
B
It
should
be
able
to
run
on
single
board
computers
like
Raspberry
Pi,
so
it
obviously
need
to
support
Linux
the
the
final
and
which
was
very
important
to
me
was
it
should
be
very
simple
to
use.
It
should
not
be,
you
know,
jargon
filled
with
Hardware.
You
know
language
Etc,
so
that
was
my
my
primary.
B
Those
are
my
primary
the
goals
so
the
way
I
started
thinking
about
this
was
I
put
together
a
rough
Define
with
the
design,
as
you
can
see,
the
biggest
part
of
the
design
being
able
to
design
the
circuit,
and
it
could
be
more
than
one
and
the
system
in
the
comfort
of
your
own
home
computer,
which
means,
if
you
are
a
iot
Enthusiast.
If
you're
a
home,
automation,
automation,
you
know
enthusiasts,
you
should
be
able
to
put
together
the
the
app
or
the
or
the
program
as
easy
as
putting
together.
B
You
know
in
a
bunch
of
circuits
together
which
you
have
helped
from
from
many
other
many
organizations
these
days,
selling,
Pi
Pi,
Raspberry,
Pi,
kids
and
all
that
right.
But
one
of
the
other
aspects
of
that
was
that
it
should
be.
It
should
be
accessible
securely
from
external
services,
like
you
know,
canvas
apps
and
Power
Platform,
and
all
that.
So
all
of
this
was
in
my
mind
when
I
was
designing
it.
So
I
went
a
little
bit
more
deeper
and
I
started
working
through
what
is
possible.
B
You
know
what
is
available
Etc,
so
the
design,
if
you
like,
is
pretty
safe,
always
a
straightforward
web
app,
which
runs
on
premise.
It's
got
a
little
internal
API,
which
understands
power
effects.
You
know
language
a
bit.
It
also
needed
a
little
storage
sqlite,
simply
because
the
fact
that
like
I
said
I
would
like
I
would
like
this
app
to
be
running
on
singleboard
computers,
which
which
are
low
power
computers,
and
we
cannot
be
running
SQL
server
and
all
this
you
know
massive
databases.
B
The
other
thing
was
that
it
should
we
should,
when
they're
designing
this
circuit,
we
did
not
it's.
It
should
not
be
a
requirement
that
that
all
the
entire
system
should
be
connected
to
to
to
the
internet.
So
so,
basically
that
was
my
that
was
my
first
goal
from
the
with
the
on-premise
side
of
things.
On
the
on
the
cloud
service
side
of
things,
we
can
build
custom
connectors,
it's
pretty
easy
to
build
custom,
connectors
and
you
know
and
deploy
to
your
environment.
So
but
then,
how
do
you
bring
them
together?
B
So
I
thought
well
punching
holes
into
firewall,
the
home
firewall,
not
great,
so
what
I
decided
was
that
I
should
use
something
like
Azure
relay
hybrid
connections.
If
you
have
worked
with
on-premise
data
Gateway,
you
probably
are
aware
of
how
that
kind
of
thing
works
in
the
sense
that
you
know
you
deploy
your
app
works
on
on
premise:
it
is
able
to
connect
out
to
the
network
not
connect
in
and
and
then
you
can
receive
messages
from
from
external
services,
so
that
was
the.
That
was
the
idea.
B
So
what
I'm
going
to
do
is
I'm
gonna,
I'm.
Sorry
I'm,
rushing
through
this,
because
I
wanted
to
show
you
the
demo,
which
is
which
is
the
most
exciting
part
of
this.
So
I've
got
a
demo
where
I'm
calling
two
circuit
demo
and
it
it's
it's
like
two
Raspberry
Pi's.
Basically,
you
know
controlling
different
different
devices
and
I
just
want
to
see
how
we
can
use
our
app
to
connect
them
together
and
work
with
them
right.
So
let
me
quickly
switch
to
that.
B
So
this.
What
you
see
here
is
this:
what
I
call
the
the
studio?
The
the
studio
is
basically
where
you
design
your
pipe
flow.
Now
you
probably
see
this
very
close
to
I
mean
this
is
using
fluent
UI,
as
you
can
see,
it's
using
react
which,
which
you
I'm
sure,
a
lot
of
people.
A
lot
of
you
are
aware
of,
because
you've
been
working
on
spfx
Etc.
So
the
the
goal
here
is
to
make
it
as
simple
for
as
possible
for
people
to
basically
set
up
flows,
I'm
calling
it
flows.
B
You
know,
but
I
didn't
find
a
better
word
to
use
that,
but
a
flow
basically
is
a
something
like
a
a
bit
of
a
code
that
reacts
to
things
happening
outside,
for
example,
if
if
someone
presses
a
button
or
if,
if
they,
if
a
web
request
comes
through
from
say,
for
example,
a
a
a
canvas
app,
you
know
how
what
should
it
react
to
the
most
important
element
of
is
not
this
I
mean
this
obviously
is
is
typical
thing.
Is
this
one?
B
This
is
using
Power
FX,
the
language
that
we
use
in
chemo
steps.
So
with
power
effects
you
you
get
to
use
all
the
usual
things
that
comes
with
power
effect.
You
know
all
the
typical
things,
for
example
here
here
you
can
see
the
the
usage
of
Boolean.
You
can
see
the
the
check,
the
if
condition
Etc,
but
the
great
thing
about
the
open
source
powerfx
library
is
that
we
are
able
to
write
our
own
function.
B
For
example,
white
pin
is
not
something
that
we'll
find
in
canvas
app,
but
it
is
there
in
five
flows
because
we
need
to
be
able
to
control
pins,
or
rather
you
know,
connections
with
the
in
your
in
your
devices
Etc.
So
what
you
see
on
the
on
the
right
side
of
the
screen
is
actually
a
very
simple
experiment
right,
so
you
got
a
Raspberry
Pi.
That's
got
that's
connected
to
to
a
to
a
button
and
a
light,
and
you've
got
a
motor
connected
to
another
Raspberry
Pi.
So
there
there
is
no
direct
interaction
between
them.
B
The
only
way
they
interact
is
through
our
our
price
flow
studio.
So
what
let
me
explain
what
I
mean
so,
if
I
press
that
button,
obviously
the
light
switch
is
on
and
and
the
motors
running,
as
you
can
see,
you
probably
are
not
able
to
hear
the
motor
running-
it's
very,
very,
very
silent,
but
what
I'm
going
to
do,
though,
is
I'm
going
to
turn
on
this
float.
I
mean
a
flow
can
be
turned
on
or
turned
off
so
I'm
going
to
turn
on
this
flow.
Now
this
flow
is
it.
B
B
It
was
just
steady
on,
but
with
with
that
in
little
addition
to
our
flow
to
to
our
circuit
design,
we
are
able
to
flash
that
so
that
kind
of
of
configuration
is
possible
and
it
can
be
done
without
knowing
anything
about
C,
plus,
plus
or
python,
or
you
know,
and
all
those
phenomenal
things
now,
one
other
bit
that
I
wanted
to
show
you.
While
we
are
doing
this
is
the
fact
that
we
are
able
to
control
the
same
circuit
from
externally,
so
I've
got
a
I've
got.
B
A
I
was
testing
it
with
Postman
before,
but
you
can
see
that
it's
just
like
an
API,
an
API
that
you
can
use
where
you
can
send
messages
to
it,
and
our
five
Flow
app
can
react
to
that
and
and
do
things
with
it.
Let
me
switch
this
off
first,
what
I'm
going
to
do,
though?
I'm
not
going
to
run
the
the
postman
set
of
things
but
I'm
going
to
interact
it
with
using
power
pack,
a
canvas
app.
So
here's
a
canvas
app.
B
The
canvas
has
been
designed
such
a
way
that
it
uses
a
custom
connector
to
interact
with
our
PI
flow,
so
I'm
going
to
switch
that
on
from
my
canvas
app,
and
you
can
see
that
it's
running
I've
got
three
speeds
on
so
I
can
reduce
the
speed
and
it
can
reduce
the
speed
further
and
I
can
also
stop.
So
this
is
canvas
app
interacting
with
our
PI
flows,
using
our
Azure
relay
hybrid
connections
with
custom
connector
in
the
middle.
So
that
is
a
quick,
very
quick
overview
of
what
is
happening
with
the
app.
B
So
let
me,
let
me
quickly
go
back.
I
need
to
finish
off
with
a
with
a
few
notes:
I've
got
some
future
plans
for
it.
I
I
want
to
support
what
I
call
devices
devices
are
like
encapsulations
of
complicated
circuits,
which
you
can
read
and
write
from,
and
you
should
be
able
to
read
and
write
from
just
like
you
would
read
and
write
from
a
control
on
a
on
a
camera
set
like
a
button
or
a
text
box
right.
B
I
also
want
to
want
to
support,
bring
in
Power
Platform
connectors
directly
into
the
app,
which
means
that
from
the
app
you
should
be
able
to
use
power
effects
to
interact
with,
say,
dataverse
or
or
another
Azure
service.
I
also
want
to
add
support
for
pi,
Pico
and
Arduino,
which
these
are
microcontrollers.
These
are
not
single
board
computers,
a
hundred
times
more
complicated
to
to
build
something
for
a
for
a
microcontroller,
but
I
am
I'm
on
it.
B
And
then
the
final
thing
that
I
want
to
do
is
to
release
that
entire
Source
sword
to
to
the
community
so
that
we
can
build
on
top
of
that
and
we
can
we
can
make.
We
can
make
sure
that
citizen
developers
do
not
miss
out
on
the
fun
of
how
home
automation
simply
because
they
are
because
you
know
it's
inaccessible
to
them
because
of
their
you
know,
programming,
lack
of
programming,
language
skills
or
extremians
right.
B
Finally,
after
all
of
this,
a
quick
set
of
acknowledgments,
a
big
shout
out
to
Mike
stalls,
who
is
the
power
effects
architect
at
Microsoft,
he's
helped
me
understand
some
of
the
nuances
of
the
library
and
how
powerfx
works.
So
I
had
quite
a
lot
of
detailed
conversations
with
him
on
certain
aspects
of
it
and
he
has
helped
me
do
some
interesting
things
with
it
and
that
helped
me
build
out
build
up
on
the
existing
code
base.
B
So
so
it
supports
you
know,
iot
related
things
and
obviously
a
bunch
of
things
I'm
a
Linux
fan,
as
you
can
see,
I
I
love
the
match.
So
so
I
do
my
development
on
Linux.
However,
what
I
want
you
to
look
at
is
the
fact
that
I'm
able
to
use
every
single,
open
source
tool,
I
can
I,
don't
I
I'm
not
restricted
to
a
particular
platform.
B
I
can
use
any
platform
I
want
to
to
build
it,
so
that
is
the
power
of
Open
Source,
that's
a
power
of
you,
know.net
and
and
react
and
visual
studio
code.
Basically,
so
that's
basically
me
a
quick
run
through
of
what
I
have
I've
I've
done.
If
you
have
any
questions,
please
ask
system
in
a
community
calls
Forum
I'm,
also
going
to
post
a
link
to
download
the
pre-built
versions
of
this
app.
You
know
we,
you
will
start
seeing
the
source
code
come
up.
B
You
know
as
soon
as
I'm
done
as
soon
as
I
have
document
the
data
and
all
that
kind
of
stuff.
But
for
now
you,
if
you
want
to
play
around
with
it,
if
you're
an
iot
Enthusiast,
please
do
not
hesitate
to
to
download
it
and
play
with
it
and
and
of
course,
I'm
always
available
on
on
chat,
and
you
know
I
even
have
a
YouTube
channel,
so
you
can
always
contact
me
whenever.
So.
That's
it.
Thanks
for
the
opportunity
back
to
you,
David.
A
Awesome
stuff,
my
man
I
mean
really
phenomenal.
The
the
the
chat
is
just
blowing
up.
So
in
the
interest
of
time
we
do
have
to
move
on,
but,
as
he
had
mentioned,
we
will
have
a
dedicated
Forum
post
for
you
to
communicate
and
collaborate
with
them
well
done.
You're
welcome
back
anytime.
Thank
you
for
sharing
this
very,
very
cool
stuff
foreign.