Wifi Heat Controller

This DIY Wifi Heat Controller is easy to build and have a lot of potential for further imporvements.

We have an electric heater, but it need a controller which can give a signal to it. Would be good if we can use low budget components to minimize the cost. We should be able to controller it without being physically close to the device.

During the phase when we were discussing what we really like to have, it came up that checking the state of the unit from all our the globe would be magnificent, so the user can to a vacation and still knows that everything goes fine at home.  

So how we solved this issue of Wifi Heat Controller? Check it below:

Used building components:

• wemos mini pro because it have external antenna which makes the Wifi signal much better
• relay board with 4 relays
• ds1862 temperature sensor

Description:

• the received data from the sensor is collected and an avarage is calculated
• if the value goes under the predefine value relay 1 will be switched on
• relay 1 turns on the heating unit which start to operate
• other relays can be used for optional actions
• controlling the unit is doable via the mini web server which runs on the device
• the unit can be updated over wifi
• data can be uploaded to the cloud, so the user can check them anywhere
• in the cloud you just need to a simple endpoint which is capable of receiving data can show it in the way you imagine it. 

– when 230V AC will be switched using the relays the casing can be dangerous 

Link to source code of the DIY Wifi Heat Controller