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Topic: what is cheapest way to control relay wirelessly? (Read 879 times) previous topic - next topic

morheb

hi guys
 may i know what is cheapest way to control relay wirelessly?
i need to know which parts i should buy
i dont want to use cc3000, it is too expensive


Robin2

#1
Dec 08, 2016, 12:58 pm Last Edit: Dec 08, 2016, 12:59 pm by Robin2
AFAIK the cc3000 is a Wifi shield so that makes me wonder if you want to use Wifi or if any type of wireless will do. If you need to use WiFi have a look at the ESP8266 modules.

You have not told us enough about your project.

Will the relay be connected to the Arduino that is receiving the wireless signal, and if so, what is sending the signal?

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

swe-dude

#2
Dec 08, 2016, 01:12 pm Last Edit: Dec 08, 2016, 01:14 pm by swe-dude
That depends a lot on your coding and electronics skill, The cheapest way i can see are attiny13 and nrf24l01. those are less then 1 USD together on ebay/aliexpress(to get that cheap you might have to buy 5 attiny13). But if you are unfamiliar with attiny and its limitations(no serial, uploading via programmer mm....) you might want to go with nrf24l01 and a pro mini those are around 2 USD together.

morheb

AFAIK the cc3000 is a Wifi shield so that makes me wonder if you want to use Wifi or if any type of wireless will do. If you need to use WiFi have a look at the ESP8266 modules.

You have not told us enough about your project.

Will the relay be connected to the Arduino that is receiving the wireless signal, and if so, what is sending the signal?

...R
I want the arduino to wirelessly be able to toggle a relay  that is connected to another machine, i will learn and search but i just need to know what i am looking for, i just need guidance atm.


That depends a lot on your coding and electronics skill, The cheapest way i can see are attiny13 and nrf24l01. those are less then 1 USD together on ebay/aliexpress(to get that cheap you might have to buy 5 attiny13). But if you are unfamiliar with attiny and its limitations(no serial, uploading via programmer mm....) you might want to go with nrf24l01 and a pro mini those are around 2 USD together.

as i said i cant learn
i dont have problem with programming, i am doing these project to learn and gain experience, i just need to know what to learn and which best hardware to buy
i have limited time, and where i live i cant buy the hardware so i need to order on ebay, which takes long time to get what i bought, that is why i need to ,make sure i buy the correct tools.

my project is to monitor power consumption in the house, and receive sms telling which devices are on, if we exceed the allowed energy consumotion, and be able to turn off the machines by sending and sms to the arduino.

Robin2

I want the arduino to wirelessly be able to toggle a relay  that is connected to another machine, i will learn and search but i just need to know what i am looking for, i just need guidance atm.
My recommendation would be for the nRF24L01+ 2.4GHz transceiver modules which are cheap and reliable. I am assuming you only need short range.

You will need an Arduino and an nRF24 at each end. If you are new to Arduinos then just use an Uno or a Nano.

This Simple nRF24L01+ Tutorial should help get you started.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

morheb

My recommendation would be for the nRF24L01+ 2.4GHz transceiver modules which are cheap and reliable. I am assuming you only need short range.

You will need an Arduino and an nRF24 at each end. If you are new to Arduinos then just use an Uno or a Nano.

This Simple nRF24L01+ Tutorial should help get you started.

...R

thank you very much
i will give the time to read and understand the topic

but just to make sure i understand the idea, i need 2 nRF24l01 and 2 arduinos ?

one couple as transmitter and other as receiver
right?



Robin2

#6
Dec 08, 2016, 07:57 pm Last Edit: Dec 08, 2016, 08:03 pm by Robin2
one couple as transmitter and other as receiver
Yes.

Another option would be these 433MHz devices. They are only one-way devices and I have no experience of them.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

marine_hm

With Wemos D1 mini's, they're only like $3.50 each.  You would only need one!

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