"Push-button machine" / push-bot for VIESSMANN gas heater

Push-Bot

WLAN-controlled "push-button machine" for VIESSMANN gas heating.

english below...

Here is a design with which a heating system can be switched from summer to winter via WLAN / MQTT (and e.g. Node Red Flow).

Ultimately, either one or the other button must be pressed.

This is done by two SG90 servo motors, each of which winds up a fishing line via a pulley, which pulls a plunger away from the pushbutton against spring force.

The motor is controlled by an ESP8266 programmed with customized TASMOTA firmware (Shutters & Sensors activated).

(https://tasmota.github.io/docs/Compile-your-build/#compiling-tools)

The ESP can be addressed directly via its integrated web server or indirectly via the HTML or MQTT interfaces.

I control these via a NodeRed Flow of my home automation system. Here I have implemented the logic that the stamp should be automatically retracted after being pressed.

I also connected a DS18b20 temperature sensor to "monitor success", which can be used to track the temperature of the hot water flow.

This design can be purchased within Germany as a kit at www.kleinanzeigen.de under the keyword "Push-Bot for gas heating". (All other designs are also available here on request).

Parts list:

2X SG90 Micro Servo Motor 9G

  (www.amazon.de/gp/product/B09FL1W3KM)

4X Bearings MR115-2RS Blue metal-rubber sealed ball bearings (5 * 11 * 4mm)

  (www.amazon.de/gp/product/B09BVT4HTF)

2X compression spring 1cm diameter approx. 2cm pressed, 500g pressure

2X screw M2.5 5mm

4X screw M5 approx. 10mm

Various M3 screws for mounting the motors and the motor mount on the cylinder component.

1X ESP8266

1X DS18B20 Dallas temperature sensor

English version:

Push-Bot

WLAN controlled "push-button automat" for VIESSMANN gas heating.

Here is a design with which a heating system can be switched from summer to winter via WLAN / MQTT (and e.g. Node Red Flow).

Ultimately, either one or the other button must be pressed for this.

This is done by two servo SG90 motors, each of which winds up a fishing line via a pulley that pulls a stamp away from the push button against spring force.

The motor is controlled via an ESP8266 that has been programmed with a customised TASMOTA firmware (Shutters & Sensors activated).

(https://tasmota.github.io/docs/Compile-your-build/#compiling-tools)

The ESP can be addressed directly via its integrated web server or indirectly via the HTML or MQTT interfaces.

I control these via a NodeRed Flow of my home automation. Here I have implemented the logic that the stamp should be automatically retracted after being pressed.

In addition, I have connected a DS18b20 temperature sensor for "success control", by means of which the temperature of the hot water supply can be tracked.