Eltek flatpack2 User manual

Flatpack2 Control
Web-based version
User Manual
v.1.0.4
Rev.2017-2021
Important: Flatpack2 Control AC cable is NOT INCLUDED into assembly. Please purchase yourself AC
cable required for your country/region and wire it in accordance with PCB marking: L, N and Ground.
Incorrect wiring of AC cable will highly possible damage Flatpack2 and Flatpack2 Control.
Important: DC connector is not included into the assembly. Correct connector should be purchased and
soldered/screwed separately in accordance to your application. PCB is designed to support wide variety
of DC connectors. Alternatively, DC wires can be soldered directly to the PCB:

1. Wiring and connecting the Flatpack2 Control
AC wiring
AC cable has to be purchased separately and securely wired to PCB before connecting Flatpack
Control to Flatpack2 rectifier. Make sure AC wires are connected correctly.
DC wiring
You do not have to connect DC wires for initial Flatpack Control setup. DC connector and DC
wiring can be completed later.
Make sure you verify and understand the required power/load for your application before
choosing DC connector type and DC wire size.
2. Initial Flatpack2 Control setup
2.1 Connecting to Flatpack2 Control WiFi network
Flatpack Control is designed to provide dedicated SSID/Access Point over 2.4GHz network
Channel 1.
Default SSID: FLATPACK2
Default pass: fp223344
Important: Default SSID is hidden (non-broadcasting), hence it will not appear in the WiFi
networks list. User have to setup manual connection to hidden network with above provided
credentials and WPA2 security mode.
Important: it is highly recommended user to change default password before start using the
Flatpack Control.
Flatpack Control WiFi network is only accessible when Flatpack Control is ON.
Any 2.4GHz WiFi capable device (i.e PC, laptop, tablet, smartphone) can be used to connect to
Flatpack Control WiFi.
Once manual connection to hidden network is set, the SSID will appear in the network list and
can be managed commonly (saved, set to reconnect automatically, etc.)
Connecting to Flatpack Control WiFi network is necessary only for setup purposes only and not
required during common Flatpack Control operations.
2.2 Accessing Flatpack2 Control web setup page
Common web browser (i.e. Explorer, Edge, Safari, Firefox, Chrome, etc) is required to access
Flatpack2 Control web setup page.
Once Flatpack Control is ON and loaded, the IP address will at bottom left corner of the TFT
display (in this example 192.168.4.1):

This is Flatpack Control IP address, which is set automatically and cannot be changed.
To access the Flatpack2 Control web setup page, open web browser in your device and type the
following in the address field:
http://IPaddress/dashboard
(Using the above example screenshot the address is http://192.168.4.1/dashboard)
The following page should appear, confirming you are successfully connected to setup:
2.3 Entering Flatpack2 Serial number
This is mandatory step. Flatpack2 Control will not display rectifier’s data till correct Serial No
entered and submitted.
Enter 2 digits per field, no spaces. Below is the example:
Once Serial No entered, press Submit button. Simple confirmation page will appear, informing
that Serial is entered and accepted. At this stage Flatpack2 Control should establish connectivity
with rectifier (it may take up to 5-10 seconds) and monitoring data should appear on TFT display:

Please note that Load (ADC or DC Amperes) will appear only when rectifier is connected and
supplying load to DC application, i.e charger, etc. If there is no load connected, the ADC will
continue to display zeroes.
3. Additional options of Flatpack2 Control setup
3.1 Hardening WiFi (recommended)
It is highly recommended user to change at least WiFi password from default. This will help to
prevent any unauthorised access to the device via WiFi.
It is also recommended to change SSID from default.
Both operations are performed via 2.4GHz WiFi setup. Connect to Flatpack2 Control web setup
page and scroll down to the following section:
Enter new settings in SSID and SSID Pass fields. Make sure both fields are completed before
clicking Submit. If you wish to change SSID password only and leave SSID to default, enter
FLATPACK2 in the SSID field and new password in SSID Pass field.
WiFi settings can be reset to default by clicking Reset button at any time.
Flatpack2 Control has to be restarted after making any changes in WiFi setup.
3.2 Changing rectifier’s output DC Voltage
DC output Voltage can be changed at Flatpack2 Control web setup page within following
section:
Make sure that Voltage setup instructions are strictly followed.

4. WiFi reset options
4.1 Forgotten custom SSID or Password
Make sure that custom SSID and Password is always saved somewhere. If those settings
forgotten or lost and Flatpack2 Control web setup page cannot be accessed, then the default
WiFi settings should be restored via Console. The following steps are required:
1. Download and install Arduino IDE: https://www.arduino.cc/en/software
2. Disconnect Flatpack2 Control from rectifier and AC
3. Connect ESP32 via USB to the computer with installed Arduino IDE
4. Launch Arduino IDE. Make sure that proper COM port is selected in Arduino IDE
5. Launch Serial Monitor
6. Press Reset button on ESP32 once. Some output should be visible in Serial monitor,
confirming that connection is established:

If there is no data visible in the Serial Monitor, then there is no connection. Make sure all
settings are correct and try again.
7. Type 9in the command line at the top of the Serial Monitor and press Send button:
The following output should appear in Serial Monitor window:
8. Disconnect cable from ESP32 USB and connect Flatpack2 Control to rectifier. Network
settings should now be returned to default.