Modification of La Spaziale S1 (Mini) Vivaldi II with timer, web interface, manual dose, power meter and printserver with airprint

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Information

Due to requests from english users, this page will become the english translation of the german documentation: https://www.kaffeewiki.de/index.php?title=Umr%C3%BCsten_der_La_Spaziale_S1_%28Mini%29_Vivaldi_II_auf_Timer,_Webinterface,_manuellen_Bezug_und_Stromz%C3%A4hler

As a start this will be the transpation via google translate. Everybody is invited to improve this page and do a better translation.

Installation of a timer "Vivaldi myTimer" in the Vivaldi incl. WLAN / WiFi

Aditionally the installation of further options will be described.

The following options are installed independent of the timer. But it is mostly so little additional effort, so it is advisable to implement this, when the machine is opened.

Option 1: Switching automatic load / manual draft

option 2: energy meter

Option 3: Shot timer incl. shot administration

Option 4: automatic backflush

Option 5: boiler shutdown (not in mini Vivaldi)

Project description

By installing a single-board computer (Raspberry Pi) into the Vivaldi a week clock timer with unlimited switching times will be realized.
As an additional feature the Vivaldi will get a wireless lan and can be switched on and off via PC/tablet and smartphone. In addition, the timer can be programmed web-based. By usage of relays keypresses to the power putton will be simulated by the Raspberry.
The material costs are about 65,- US$.

Functions

Programming the (mini) Vivaldi wia web interfache
Unlimited amount of timers to switch on/off the machine (daily, weekly, individually switchable) (with/without steam boiler in the non-mini)
Switching on/off via web interface with popular browsers (eg with a smartphone when you are out)
The non-Mini can be switched on with without steam boiler via the GUI optional
Power on / off by building control via web Interface
Automatic and manual shot Timer
Shot administration (database with comment and favorites function) (Shots under 8 seconds will not be saved)
The shot database can be cleaned by pressing a single button (all uncommented entries without favourite flag and without mark)
all timers can be programmed individually with/without switching steam boiler shutdown (Not for mini Vivaldi)
automatic shot can be switched off (manual draft)
backflush automatic
electric meter incl. electric cost calculator
user management with authorisation concept
configuration completely possible through the graphical interface
phpMyAdmin can be used for data migration
configuration of WLAN on Windows directly to the SD card possible
integrated printserver with airprint

Screenshots

The web interface is available from PC / tablet or smartphone via web browser.

The timer includes manual on / off and change the automatic / manual dose.

shot timer / shot administrative

user management

configuration

Security note

The tasks described here may only be carried out by competent persons. When working on high voltage (120V/230V) can be deadly. Moreover, in case of errors the machine may be damaged.

Disclaimer

This description portrays the modification of my machine. There is no guarantee that errors have crept in. For this reason, do not accept all descriptions 1 : 1. It is intended primarily to be able to understand the work and to pay an own modification without this description. I am not responsible for any damage! This description is an initial draft. It would be glad if someone would check the description is correct. Suggestions, corrections and additional photos are welcome.

The material

The Raspberry PI (Rev. 2), a housing, a 4GB SD card, a WLAN stick, an AC adapter and an extension to realize a socket inside the Vivaldi for the power adapter. Who mounts the Raspberry externally, can also operate with a standard electrical outlet.

Note: The Raspberry PI (Rev. 2) is not 100% compatible with the Rev. 1. Due to the modified connector strip is not running the software provided correct.

Raspberry PI B + is pin-compatible and can therefore be used.

The cable and a relay.

The components can be bougt at Reichelt: here the shopping chart

Then we need a the relay board with one or two relays. Here helps ebay search for "relays raspberry". Screws on both sides avoid soldering.

For option 2, a elecric meter is required. Ebay search for "electricity meter S0" will show some. There are models with different pulses per kW. The higher the value, the more accurate the count. 1000 pulses are but adequate.

The software

The software is available here (2-3GB): Download

The password for the image is: only4Testing

For this I need the user from KaffeNetz or from S1Cafe. In both of these forums I will support myTimer. To other mail address I will not send messages.

German support is provided here: [1]

English support page is here: [2]

Here is an example of the surface through the browser of an iPhone:

Installation

In my Vivaldi I mounted the Raspberry inside the machine. For temperature reasons i can only recommend this if the boilers are isolated. For unisolated kettles I recommend to put the Raspberry onto the back of the Vivaldi. But if the machine is open anyway, an isolation with Armaflex is done also fast.

1. First, the machine must be opened:

2. Connect cable from the control panel to control electronics should be made free, so that the control electronics can be pulled to the rear:

3. The plugs should be labeled so that they will find the right place on the control electronics when mounting again.

4. Open the box of the control electronics:

5. With an adapter cable, we split the necessary pins out. Important here is the direction of the markings. The nose of the female connector and the recess of the plug strip facing upwards!

6. We need only the wire 1 (red) and 11 for the relay on / off. For the "backflush" option we need the wires 2 and 7 (7 is the double shot, 2 and 5 (single shot) would also be OK). For the "switch of steam boiler " option we need the wires 2 and 9.

All other wires will be removed. The two wires we stuck in a shrink tube.

7. Insert adapter cable.

8. Option 1:

Preparing for automatic dose (only necessary if this function is desired)

For this purpose, the plug next to the ribbon cable is severed and lengthened the green wire, so that it can be connected later on our relays:

9. Now the cable between relay and Raspberry is assembled.
I chose solder connections. But there are also relays available with screws. So no soldering would be necessary during the modification.

On the relay boards, the connections are usually labeled well.

On Raspberry we use the following pins:

For the timer

Raspberry Pin 2 (+ 5V) ---> VCC relay
Raspberry Pin 14 (ground) ---> relay GND Raspberry Pin 15 (Gpio22) ---> relay

Option 1: Switching automatic shot / manual shot

This option is recommended. We only need another wire and a relay board with two relays. This costs only about 1,- US$ more than a board with only one relay.

Raspberry Pin 16 (Gpio23) ---> Relay2 IN

Option 2: Energy Meter

As a second function, a power meter can be installed. It sends for each consumed kWh depending on the model 1000 or 2000 pulses to the Raspberry.
We can evaluate these pulses and calculate with the power consumption and the kWh price the power costs.
The costs for a power meter are about 20,- US$

Raspberry Pin 5 (Gpio03) ---> power meter S0 +
Raspberry pin 6 (ground) ---> power meter S0 -

Option 3:. shot timer incl. shot administration

A relay parallel with the magnetic valve provides us with the necessary contact.

PINs: Raspberry Pin 3 (Gpio02) ---> RELAY5 closers
Raspberry pin 6 (ground) ---> RELAY5 NO (PIN same as in option 2)

Option 4: back flush automatic

Raspberry Pin2 (+ 5V) ---> Relay3 VCC
Raspberry Pin 14 (ground) ---> GND Relay3
Raspberry Pin 18 (Gpio24) ---> Relay3 IN

The NO contact of the relay goes to the control panel wires 2 and 7.

Option 5: Boiler shutdown

Raspberry Pin2 (+ 5V) ---> Relay4 VCC
Raspberry Pin 14 (ground) ---> GND Relay4
Raspberry Pin 22 (GPIO25) ---> Relay4 IN

The NO contact of the relay goes to the control panel wires 2 and 9.

10. For the cables we need a recess on the housing.
I extended it directly besides the RCA connector and then pulled through the cable.

11. The closed casing can be sealed with an electricians tape against any moisture.
(Due to the many holes on the chassis that's more of an alibi work;))

12. Connection of the relay board

GPIO22 turns the machine on and off.

The two cables from the adapter cable to the control unit come on the closer.

GPIO23 switches the automatic load.

The two extended cores of the green terminal come on the opener.

The connection diagram can be seen in the photo below the wires.

Here is a photo of the not connected relays.

Who renounces the option 1 (automatic shot detection) of course has only one relay.

Anyone who uses three relays, is prepared for the coming option "automatic cleaning program". (Now implemented)

13. The completed attached relay should be protected against short circuits, as we put it into the casing of the control electronics.
I have used a shrink tube. Wrap with electrical tape should also be OK.

14. Here is space for our relays.
Now the housing of the control unit can be closed again.

15. Now only the power plug for our Raspberry is missing.
For this we cut out the extension and connect it to the power cord of Vivaldi.

16. Option 2: electricity meter (only if desired)

Now the electrical meter can also be installed.
Just pull the power cord of the Vivaldi into the machine until it reaches to the cup warmer.

Split the cable at the top and use the electricity meter.

L is the brown wire direction outlet.
N the blue wire towards outlet.

The outputs are labeled accordingly.

S0 + goes to Raspberry Pin5 (GPIO3).
S0 + goes to Raspberry Pin6 (mass).

If the electricity meter has a display, it need not to be visible, as we read the values on the Raspberry.

17. Option 3: Shot timer (only if desired)

We engage the shot timer from the relay for the magnetic valve. Because of the size and the need of a potential free contact, I have used a reed relay with built-in freewheeling diode.

The solder points on which we can solder the relay we will see in the following image. !! Caution !! Unfortunately, the cores (+/-) are reversed on the photo. After correction I forgot to make a new image.

And here the used reed relays. This is also available at Reichelt (SIL No. 7271-D 12V). The label is: SA12-1A72-71D

18. Now everything can be reassembled.
The Raspberry I tucked in my top of the cup warmer.
The SD card is facing up, so I can easily make a firmware update.
With cable ties the power meter and the Raspberry can be fixed.

19. Now we need the software.

With the tool "Win32 Disk Imager" it is written to the SD card.
Then plug it in the Raspberry and connect via cable to the network.

Now power on the Vivaldi.

After 2 minutes, the web interface should be reachable: http://Vivaldi/

The login is: viv
Password: viv

Now a test of the correct wiring of the relay can be done.

20. In the "settings" menu, which is accessible through the gear icon at the bottom right, the system settings can be made.

Here, the SSID and the WPA-Key of the WLAN network can be entered. Then the power plug must be disconnected shortly and the LAN cable are disconnected.
Insert power plug.

After 2 minutes, the web interface should be accessible via WLAN.

Note: Probably only WPA2 works without problems.

Possibly there are also some special characters in the WPA Key problems.

If everything works you have done it and the housing can be closed.

Others

Switch on/off by web interface

The Vivaldi can be switched directly over web interface.
This can be used for various automation. eg FHEM / home automatisation

Switching on: http://username:password@vivaldi/gpio_on.php
Off: http://username:password@vivaldi/gpio_off.php

Time Zone

A hint for my non German users: You will have a timezone problem, Because the image is configured to German timezone. It is easy to change this via console:

To change timezone, please use the program Putty to enter the shell of the raspberry. User: pi Password: Vivaldi

Use "sudo Raspi-config" to change timezone.

printserver

You can configure the build in printserver with: http://vivaldi:631 It is possible to use any printer in same network as an airprint printer. There is no need for a wire connection between Vivaldi and printer.