Ficak (fičák) V1

Booster for T21 radiators.

Introduction

As part of multiple energy saving activities in our house I did not find any "cool" solution for airflow booster attachable nicely to T21 radiators. And have to create one:

3D models

I created model of holder attachable into T21 radiators (only 66mm thick) and universal case for controller and 40mmx40mm fan.

It is possible to connect several fans in row only by adding another "fan" module - fan module is just paralel cable with fan and connectors.

tinkercad models & STLs

files

Circuit Diagram

NodeMCU VIN should handle up to 18V. I'm using 12V input voltage and <20dB fans.

NodeMCU tasmota configuration

HA overview

HA automations

TBD

Photos

Measurements

TBD - I will do some measurements and whole family subjective assessment during heating season ;-)