Joy-it StromPI V2 User manual

StromPI V2
User manual
www.joy-it.net

Dear customer,
thank you that you have decided to buy this product.
Following we have listed the things which you have to care for the rst use:
The StromPi 2 expansion board is the new development of the popular company Joy-IT
Power-Soluon.
Not only that the voltage-range was increased to 6V-61V that you can connect more bae-
ries or a higher voltage supply, the StromPi 2 board now outputs a maximum current of 3A,
that also bigger projects of you are no problem.
Addional to that, a reset-funcon for the Raspberry Pi was included to extend the UPS-
funcon of the StromPi 2.
Because of the new super at design and
binding, you can put the StromPi 2 in
many dierent casings and use it in
addional ways.
The StromPi 2 allows you to connect your
Raspberry Pi with any voltage source with
a 6V-61V voltage range.
Because of that you have addional ways
to use your Raspberry Pi ( car, truck, ship,
industrial plant for example).
Oponal, the Raspberry Pi gets an up-
grade of the USB-output to a high-power-
USB connecon, to provide performance
intense USB-disk drives.
The integrated UPS-funcon enables you to secure your crical applicaons against power
blackouts.
You can monitor the UPS-funcon via Raspberry Pi soware and the soware can send an e-
mail, for example, if a power blackout occurs.
Because of eciently used controllers, you can use baeries to run the Raspberry Pi mobil.
Useful expansion of the UPS-mode: Aer the StromPi 2 shuts down the Raspberry Pi becau-
se of a power blackout, the new reset-funcon restarts the Raspberry Pi if the power black-
out ends.

Intended Usage: Expansion card for connecng a compable one-circuit-board
computer (like Raspberry Pi) with a 6V-61V power source
Warning: Under heavy load, the Strompi 2 can get really hot. To secure
against burnings, please don't touch the circuit board while the
Strompi 2 is acve and enable a good air supply that the device can't overheat.
!
GPIO-Port
1. Mode switch
[UPS|Wide]
2. Mode switch
microUSB (5V)
Voltage-Input
[primary]
T-PIN
High-Power USB Output
Data-/Current-Output
to connect with the
Raspberry Pi
Wide-Range (6V-61V)
Voltage-Input
[secondary]
Reset-switch

Operaon modes
The StromPI 2 provides two operaon modes, the UPS and the Wide mode
which we listed below.
UPS mode
The UPS Mode is the Baery-friendly Mode: During standby only 20µA – 80µA
will be used from the wide range voltage source.
Because of the low power consumpon during standby, the maintenance cycle
of possible baeries is really high.
While standby for one year, this circuit uses between 175mAh and 700mAh from
the wide range power source.
With a standard 3200mAh LiPo-Akku with 7,2V for example, theorecal there
would be 2500mAh le aer 1 year standby (if you don't consider self-discharge,
area eects like weather, temperature and the quality of the baery. This is only
theoracally, to show how low the energy consumon is. The real baery-
capacity depends on to many factors).
That low standby-current results of the fact that the wide range board will only
be acvated if there is no power supply at the with "IN" marked micro-USB-port.
In this case it will be switched to the wide-range source without a break. The
current which is needed while the switch will be provided by the StromPi 2.
Disadvantage of that is that the StromPI 2 can only be started with the micro-
USB-port "IN", while in UPS-mode.

Wide mode
While in the "WIDE"-mode, the StromPi can be started and used with the stan-
dard micro-USB port or with the WIDE-range voltage input, which is for energy
sources with 6V-61V.
This funcon will be used at vehicles (like cars, trucks, ships), or at mobile usage
with baeries.
The power source of the micro-USB connecon will be preferred here, at a
power blackout, it will also switch to the WIDE-range power source without a
break. We advise this mode for the direct use of a power source at the WIDE-
range input - for baery buered systems we advise you to use the before men-
oned UPS-mode. Even if the StromPI will be provided with the micro USB, it will
use 3-7mA, while in WIDE-mode, from the wide-range-power source, thats like a
thousand mes higher than the standby-usage of the UPS-mode.
We advise you to use a ON/OFF switch at the Wide-range power supply because
if it is not used in a car for example, the baery will not discharged from it.
Switching between UPS & Wide mode
You could pick one of the two modes at the front site of the board - please check
the marks at the circuit board.
For a mode change, both jumpers have to be replugged!

High-Power-USB
One of the big disadvantages of the Raspberry PI is that its UBS connecons
can't give up high performances. You can't use USB-disk drives, for media centre
oder NAS-applicaons for example, with that.
With the StromPi 2 you have the oponal choice to extend the Raspberry Pi with
a high-power-USB port and gives the Raspberry Pi USB-ports a higher current
output.
For this you have to connect the second micro USB port, which is marked with
"Data IN, Power OUT", with a standard micro-USB-cable, and connect the se-
cond site of the cable with a free USB-port of the Raspberry-Pi.

Here you will connect the StromPi 2 via USB with the Raspberry-Pi and with that
it can output, depending of the connected voltage, a maximum current of 3A.
Addional to that you have the chance to get a higher current at the other USB-
ports of the Raspberry-Pi.
Voltage control
At the StromPi you can nd a with Test point which is marked with "T-Pin", with
it you can broadcast the status of the StromPi to the Raspberry-Pi.
It will be connected with a Jumper to the GPIO21 pin of the Raspberry-Pi by
default. If you want to use the GPIO21 pin for other things you have to remove
the Jumper. You can now connect the T-Pin with a free GPIO pin of the Raspber-
ry-Pi, for that you need a Pin-Connector cable.
If the StromPi switches into the baery mode, it can, with help of our soware,
send you an e-mail or safely shutdown, to provide your recorded data from
being lost.
You will nd the soware at our download area from our website
www.joy-it.net

Reset-Circuit
One of the expansions compared to an older version is that the StromPi 2 has an
onboard reset-circuit. This restarts your Raspberry-Pi automacally if the main
power supply is acve again. This is a big help at the UPS-mode.
If you want to switch between the power
sources oen (baery -> power supply ->
baery -> power supply for example), you
can disable the funcon if you pull out the
jumper.
The posion of the reset eld from the
older models of the Raspberry Pi B+, 2B and Raspberry Pi 3 is dierent. Because
of that the StromPi 2 has 2 reset pins at the back site:
The reset pin of the StromPi
for the Raspberry Pi 3 is isolated by default, because it would short the older
versions of the Raspberry-Pi!
Reset pin for
Raspberry PI
3
Reset pin for
Raspberry PI
B+, 2B

Raspberry PI 3
If you want to use the reset funcon at the Raspberry Pi 3, you rst have to
pull the isolaon from the reset pin which is for the Raspberry Pi 3.
You can ignore the Raspberry Pi 2 reset pin because it don't touch any other
components here.
If you want to use the StromPi for a Raspberry Pi B+ / 2B aer that, you
must put the isolaon back at the reset pin, if you don't do this the Rasp-
berry Pi and the StromPi can take heavy damage.
Raspberry PI B+ / 2B
The pin for the Raspberry Pi 2 has no isolaon and the pin for the Raspberry
Pi 3 has an isolaon by default. That means you can plug in the StromPi 2
directly.

WIDE-range voltage input
Connect the marked port with any power supply like power adapter or baeries
for example.
Alternavely you can run the StromPi with the micro USB connecon of the
front site of it. It is marked as "IN".
The voltage range of it has to be
between 6V-61V - please take care
of the polarity to secure the Rasp-
berry Pi and the StromPi from dama-
ge.