Joy-it StromPi 3 User manual

StromPi 3
3

StromPi 3
Published: 08.08.2019 Copyright by Joy-IT 2
TABLE OF CONTENTS
1. Introduction
2. Overview
3. Current sources
4. Functions of the StromPi 3
4.1 Prioritization of input
4.2 Time-controlled applications
4.2.1 Real time clock
4.2.2 Automatic configuration of time
4.2.3 ShutDown timer
4.2.4 Alarm mode
4.2.5 PowerOff alarm
4.2.6 WakeUp alarm
4.2.7 Minute Wakeup Alarm
4.2.8 Weekend Wakeup Alarm
4.2.9 Interval function
5. Additional functions
5.1 Serialless mode
5.2 Example of usage with real-time clock
5.3 PowerOn button
5.4 PowerOff mode
5.5 Powersave mode
6Configuration of StromPi 3
6.1 Activation of serial communication
6.2 Execution of the GUI script
6.3 VNC for remote desktop connection
6.4 SSH-Connection with PuTTy and Xming
6.5 SSH-Connection with MobaXterm
7. StromPi 3 scripts
7.1 Serial scripts
7.2 Serialless scripts
7.3 Raspberry Pi Pin-Layout
7.4 Automatic execution of scripts
8. Modifications
9. Opening of the serial console of the Strompi 3
10. console commands
11. Support
12.EU-Declaration of conformity

StromPi 3
Published: 08.08.2019 Copyright by Joy-IT 3
Dear costumer,
Thank you for buying our product. The structure and funcons of the StromPi3 are explained in the
following chapters. We show you which sengs must be adjusted that the Raspberry Pi will work with
the StromPi perfectly.
If you get any dicules with the usage with the device, do not hesitate to conact us.
The StromPi3 enables the Raspberry Pi® and other single-board computer new areas of applicaon.
Addionally ,the StromPi 3 has next to the same voltage inputs (mUSB, WideRange 6-61V) as the
StromPi2 an oponal plug-in unit for baeries. This expands the Raspberry with a LiFePO4 baery which
is a rechargeable emergency power source. Unexpected power failures are now in the past.
The priorized inputs can easily be changed which means the StromPi 3 is able to t in your project
perfectly. With the voltage range from 6V to 61V and a current with up to 3A, there is enough power for
bigger projects.
In addion the StromPi 3 has an own congurable autonomously acng microsystem unit which can be
used for a programmable start-stop behaviour:
Let your system boot and shutdown at dictated mes to do meassurements or to switch devices on and
o (ideal for digital signals or for controlling machines). The included real me clock can be used to
synchronize the me with the Raspberry Pi without internet access. There is also an expansion to control
the serial interface (state baery charge, voltage of the in-/ outputs, control and conguraon) this
makes the StromPi3 to an absolute allrounder.
The StromPi 3 suits every applicaon area you choose perfectly.
1. INTRODUCTION
This Manual is made for the firmware version 1.71. We recommend upgrading the
firmware of the StromPi regularly. You can download the newest version here.
There is also a manual to flash the firmware in the download register.

StromPi 3
Published: 08.08.2019 Copyright by Joy-IT 4
The StromPi 3 can heat up if it is under heavy load. Do not touch the board when it
is in operation you could burn yourself. Pay attention that the device has a good
air flow to prevent any damage from overheating.
2. OVERVIEW
high-power
USB output
data / voltage output
microUSB
voltage input
connceon LiFePO4 baery
GPIO port
Switch capacitor-buering
Wide-Range
voltage input

StromPi 3
Published: 08.08.2019 Copyright by Joy-IT 5
The StromPi 3 can get its power from three different current sources. In case of a power
failure it switches steplessly to the current source which is configurated as the second and
after that to the third.
MICRO USB
The StromPi 3 can obviously, as usual, be powered via the microUSB port.
WIDE-RANGE
The Wide mode can be used with a current source from 6V - 61V. Connect the marked port
to an arbitrary current source, as power supply or a vehicle electrical system.
Attention! The current source must be switched on within the range of 6 - 61 V. Please pay
attention to the polarity to avoid damaging the Raspberry Pi or StromPi3.
3. CURRENT SOURCES

StromPi 3
Published: 08.08.2019 Copyright by Joy-IT 6
BATTERY-UNIT
The StromPi 3 can be expanded with an optional 1000mAh LiFe04 battery, which is a
rechargeable emergency power source. You only have to plug in the separate available
battery unit, which then can be configurated as the second or third current source.
Because of the implemented GPIO-bar, you do not have any restrictions with the usage of
the battery unit.
The StromPi 3 has a huge amount of configuration possibilities. You can configurate this
device after your desires like for example the prioritization of input, optional shutting
down as well as the WakeUp and PowerOff mode. More functions can be setup with our
graphical user interface script.
To use all of the functions that the StromPi provides you have to use our Phython scripts.
These are listed and explained in chapter 7 “StromPi 3 scripts“.
4. FUNCTIONS OF THE STROMPI 3

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Published: 08.08.2019 Copyright by Joy-IT 7
1: Choose StromPi mode.
2: Activate or deactivate the powerfail warning
3: Setup of the BatteryShutdown mode
4: Activate or deactivate the Serialless mode
5: Activate or deactivate the Power Save mode
6: Activate or deactivate the Poweroff mode
7: Setup of the Alarm mode
8: Setup of the Wakeup alarms
9: Setup of the PowerOff alarms
10: Setup of the Interval alarms
11: Setup of the real time clock
12: Activate or deactivate the Shutdown timers and setup the time (in seconds)
13: Activate or deactivate the PowerOn buttons and setup the time (in seconds)
4. FUNKTIONEN DES STROMPI 3
To use all the settings which are described in the following chapters
you have to use the serial conncetion. In chapter 6 is an explanation
how to configurate a serial interface for the Raspberry Pi.

StromPi 3
Published: 08.08.2019 Copyright by Joy-IT 8
4. FUNCTIONS OF STROMPI 3
StromPi mode:
The StromPi mode determines the prioritization of the separate current sources.
Powerfail warning:
The PowerFail warning will show when the primary power source is failing.
Battery shutdown mode:
The battery shutdown mode determines with which remaining battery level of the RaspberryPi the
device will shut down.
Serialless mode:
The serialless mode allows a further usage of the serial ports by communication on a GPIO pin.
[modifictaion required! Look at chapter 8 “Modifications“]
Power save mode:
The power save mode will reduce the power consumption if Wide is set up as the secondary power
source. However, this is only recommended when the device is in operation with a low amperage
(<2,5A / for example an Raspberry Pi without periphery).
Real time clock settings:
In the RTC settings you can setup the time and the date of the real time clock manually or
automatically with comparing and synchronizing the time with the Raspberry Pi.
Shutdown timer:
If you have activated the shutdown mode and the StromPi detects a power failure at the primary
power source the StromPi3 will send a signal to the raspberry through the serial interface to start
the shutdown. After that the counter starts that will disconnect the powersupply to the raspberry.
PowerOn button:
With the PowerOnButton you can start the RaspberryPi if it is in the poweroff state through short -
circuiting the two reset pins. [modification needed! See chapter 8 “modifications“]
Interval timer:
The interval timer can be setup to shutdown or boot the system after a selected time.
Alarm mode:
The alarm mode refers to the WakeUp and PowerOff alarm. It selects if the alarm goes of daily,
weekly or only at a specific date.
WakeUp alarm:
The WakeUp alarms start the Raspberry Pi at a specific time.
PowerOff alarm:
The PowerOff alarms shut the Raspberry Pi down at a specific time.
Poweroff mode:
The Poweroff mode requires the activation of the RaspberryPi with the PowerOn button after a
shutdown through the Shutdown timer. Additionally, this mode prevents the detection of a
reversion of the primary power supply.

StromPi 3
Published: 08.08.2019 Copyright by Joy-IT 9
The power source where the StromPi draws its power from can be set up as desired. In
addition, you can select a second and a third power source which will take over if the first
source fails.
In the default settings microUSB is the primary power source and Wide is the secondary.
In total there are six different modes possible. The primary power source is the main power
source. The secondary power source will take over when the primary source fails.
The corresponding mode can be setup with the configcscript in “choose StromPi V3
Powerpath Mode“.
MODE PRIMARY SECONDARY TERTIARY
Mode 1 microUSB Wide-Range -
Mode 2 Wide-Range microUSB -
Mode 3 microUSB Battery -
Mode 4 Wide-Range Battery -
Mode 5 (V1.6 or higher) microUSB Wide-Range Battery
Mode 6 (V1.6 or higher) Wide-Range microUSB Battery
4.1 PRIORITIZATION OF INPUT
Primary power source
failure
Prim. Source
acve Sec. Source
ready
Prim. Source
failed
Sec. Source
acve
Automac change of power sources
due to primary source failure

StromPi 3
Published: 08.08.2019 Copyright by Joy-IT 10
4.2.1 REAL TIME CLOCK
The real time clock (RTC) of the StromPi 3 can be setup with the Configscript:
ADJUST TIME AND DATE MANUALLY
To adjust time and date manually click on Manual Setting. Now you can fill the fields in the
right. If you click on Update it will set your setting.
SYNCHRONIZING TIME AND DATE WITH RASPBERRY PI
To synchronize time and date with the Raspberry click on Sync with Raspberry Pi. With the
click on Update the time from the RTC of the StromPi will be compared to the time on the
Raspberry. The newer time will be overwritten with the current one. The default time of
the StromPi is the 01.May 2018 and the Raspberry Pi updates its time automatically if it is
connected to the internet.
4.2 TIME-CONTROLLED APPLICATIONS
The StromPi 3 has a additional real time clock.
If the power fails, the time-controlled applications are not endangered. Even time-
controlled shutdowns and boots are still possible!
Please note that you have to use atleast one power source connected (mUSB, Wide
or battery) - If all sources are seperated, the current time will not be saved.