Send temp info on 433mhz transmitter to RF Link gateway

Larsja · Post by **Larsja** » Wednesday 27 July 2016 22:31

Hi,

Noob to arduino here.

Currently working on a small project to get the aquarium into domoticz via arduino nano, starting with temperature, then gonna add on flow on the pump and such.

Getting readings on the temparture from a waterproof ds18b20, and started now on how to transmitt it using a 433 mhz china transmitter (you know the cheap ones

). But then it strook me, how can i send the data so that the RFLink Gateway and domoticz understand it. If i remember correctly the modulation on the transmitter is supported by RFlink.

Anyone here who has done something similiar? Or have a tip on how to transmitt the data so it doesnt get lost in translation ^^

hardware being used:
Temp sensor: http://www.ebay.com/itm/201544352532?_t ... EBIDX%3AIT
ArduinoNano
433 transmitter http://www.ebay.com/itm/5pcs-433Mhz-RF- ... Sw6EhUN9s-

Stuntteam · Post by **Stuntteam** » Thursday 28 July 2016 0:03

The transmitter is fine. You need to use a script for your Nano that sends it with one of the known protocols.
I have some samples.. mail [email protected] for more info

Larsja · Post by **Larsja** » Thursday 28 July 2016 9:33

Sweet, thanks in advance

treb0r · Post by **treb0r** » Friday 05 August 2016 9:08

HI, I would also need some sample script to understand how to transmit temp and door sensor states to Rflink through 433mhz cheap transmitter.
Thanks
treb0r

bibo456 · Post by **bibo456** » Monday 29 August 2016 16:36

Hello

I am looking for the exact same thing : door sensor state / temperature & eventually switch a relay.
Thank you for your support ( link to tuto...)
Have a nice day

deennoo · Post by **deennoo** » Tuesday 30 August 2016 20:03

French user got one great howto but in french language : http://easydomoticz.com/forum/viewtopic.php?f=7&t=1956

Works like a charme and battery friendly.

reddo · Post by **reddo** » Thursday 01 September 2016 12:26

Looking at exactly the same here to control my floor heating pump (should only be running when there is temperature coming from the boiler through Domoticz, at the moment I have it running on a small PCB doing that but this can not be monitored) Switching the pump will be through a 'klik aan klik uit' switch.

Any chance to post the script here Stuntteam ?

Cheers,

Redmer

mvzut · Post by **mvzut** » Thursday 01 September 2016 14:40

Did you consider using an ESP-8266 based board for this rather than an Arduino? This will transfer all data via WiFi, and is probably cheaper than an Arduino Nano + 433 MHZ module (I paid around 2 Euros for mine). After flashing it with the ESPeasy firmware, communication with Domoticz is set up in just a few clicks. I'm pretty sure it supports your sensor out of the box.

reddo · Post by **reddo** » Thursday 01 September 2016 21:15

Looks like a very nice option.. also for making my washing machine start by wiring a contact parallel with the start button to make it start from Domoticz when my PV system is generating enough power to cover the power demand... Thanks !!

tontze · Post by **tontze** » Sunday 05 February 2017 20:19

mvzut wrote:Did you consider using an ESP-8266 based board for this rather than an Arduino? This will transfer all data via WiFi, and is probably cheaper than an Arduino Nano + 433 MHZ module (I paid around 2 Euros for mine). After flashing it with the ESPeasy firmware, communication with Domoticz is set up in just a few clicks. I'm pretty sure it supports your sensor out of the box.

Can you make and guide about this ? Or is there allready one somwhere ?

mvzut · Post by **mvzut** » Sunday 05 February 2017 20:30

tontze wrote:
mvzut wrote:Did you consider using an ESP-8266 based board for this rather than an Arduino? This will transfer all data via WiFi, and is probably cheaper than an Arduino Nano + 433 MHZ module (I paid around 2 Euros for mine). After flashing it with the ESPeasy firmware, communication with Domoticz is set up in just a few clicks. I'm pretty sure it supports your sensor out of the box.

Can you make and guide about this ? Or is there allready one somwhere ?

I would start here:
http://www.letscontrolit.com/wiki/index.php/ESPEasy
It describes all possibilities and the different ESP versions that exist. You can buy them from e.g. EBay or AliExpress. Once you have it, you have to flash the ESPEasy firmware on it, this is also described on the Wiki. Here's a page that describes using it with a DS18b20:
http://www.letscontrolit.com/wiki/index ... tureSensor

It's not an out-of-the-box solution, but also not very difficult to build. Hope this info helps!