Wifi control of 230VAC powerswitches

Hi' I am helping a hospital in the northern of Tanzania to control their limited resources of power from their hydro power plant. Actually I am renovating the entire hydro power plant control, which is why I need some software development assistance.

From my Hydro controller, I send information to a Power Management Unit, which in turn can control up to 15 power outputs for electric water heaters mainly. Nomally I would then just place the heaters on a separate phase and add relays to turn on/off that phase to a particular house, but since they have only drawn 1-phase power line to most of the houses, this is not an option.

Therefore I will have to place remote Wifi controlled relays on each house to switch on/off the heater only, and not all the other power to the house. I plan to use either:

[login to view URL]


[login to view URL]

at each house receiving a wifi signal from a central omni directional antenna.

From the hydro power controller I get an RS232 serial single byte sent every 50 times a second, this is also transferred over a Wifi link from the hydro power plant, and received at the hospital.

The single byte contains a value from 0 to 15 to indicate how many loads are allowed to be on. = = all off. 5= 1 to 5 on. 15= all on.

The development task is to transform this received byte into a signal that the Wifi switches can understand.

These switches are nomally controlled from an App on a smartphone, but in our application we should preferably disable this option, or only allow this from an app with a master password, so that individuals cannot override the control from the hydro power plant controller.

I believe these Wifi Power relays utilise the ESP8266 microchips, and that a lot of support is available on the internet for programming these, so I hope the task of implementing this is fairly easy to overcome.

Timeframe: approx. 1 month, which should be more than sufficient.

Taidot: elektroniikka, Ohjelmointi, Ohjelmistokehitys

Näytä lisää: sonoff, arduino wifi relay switch, arduino wireless light switch, control arduino via wifi, wifi light switch, wifi relay control android, arduino wifi control lights, control arduino uno with wifi, pfsense wifi control, wifi control app, wifi control ios, webbrowser control click link, gps tracking data transferred wifi, control applications wifi, custom link wifi firmware, webbrowser control image link, aspnet link buttons composite web control, wifi control access, wifi control user access, inet control link checker

Tietoa työnantajasta:
( 1 arvostelu ) Odense N, Denmark

Projektin tunnus: #16964903

Myönnetty käyttäjälle:


Hi, I'm very sure to accomplish your project on time and budget. I can guarantee to you no paymentent to me until the project is complete. I offer to you complet skype assistance for anything question you have and w Lisää

$400 USD 20 päivässä
(3 Arvostelua)

16 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


Senior ENGINEER. have at least 40 years experience developing Hardware and Software Producing Analog/Digital Video board designs, layouts and modifications; Verifying designs and layouts; Preparing documentation for Lisää

$1333 USD 10 päivässä
(39 arvostelua)

Hi there, I have done same project on freelancer here , you will find it my reviews too . I have got the required module also.

$833 USD 10 päivässä
(10 arvostelua)

Hi. I am a professional Electronics Design Engineer having expertise in developing Wifi control. I have read your project requirement and ready to provide you the solution for controlling your switching relays using Lisää

$500 USD 10 päivässä
(13 arvostelua)

Dear Sir, I have experience in developing the application based on the ESP8266 module, I have I also worked on the Arduino, Raspberry pi, STM, NRF etc. My team member has experience in Lisää

$777 USD 10 päivässä
(4 arvostelua)

Hello, I can help you with your project. I have experience working with esp8266 modules and can do programming part of your project. If I understand correctly, we need to create some server part, which would be conn Lisää

$750 USD 10 päivässä
(1 arvostelu)
$666 USD 10 päivässä
(1 arvostelu)

Hi, We will build your ESP8266 WiFi based Hydro plant control software. We have very good experience with ESP and sensors. We have developed similar IoT solutions that is based on WiFi, RF, sensors and micro-control Lisää

$1200 USD 20 päivässä
(8 arvostelua)

I had worked on various communication interface. It includes WiFi based interface also. You can see some of my similar projects on blogger site - Realm of Embedded Microcontroller.

$555 USD 20 päivässä
(1 arvostelu)

I already have much experience with wireless control projects. Most are DC applications but the software would be about the same. Can do for Windows, Mac, or Linux in C++. Relevant Skills and Experience Wireless relay Lisää

$750 USD 20 päivässä
(0 arvostelua)

A proposal has not yet been provided

$277 USD 5 päivässä
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A proposal has not yet been provided

$1000 USD 30 päivässä
(1 arvostelu)

Hi! this will be my first project on, because of it i wont ask for a payment and the beginning of the project, just at the end. I've been working with automation processes for about 4 years, and 7 year Lisää

$422 USD 15 päivässä
(0 arvostelua)

Hi, as automatic engineer with 15 years of experience, I can definitely help you with your project! looking forward to your reply king regards Michel Feria

$555 USD 30 päivässä
(0 arvostelua)

Hi, We can do this project with ESP8266 with module you suggested [login to view URL] I can modify the firmware of the board Lisää

$277 USD 30 päivässä
(0 arvostelua)

I have 7years experience in electronic embedded hardware. I will successfully deliver the project within time

$555 USD 10 päivässä
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