Cheap Internet temperature logger

[chris246810]

Been playing around with raspberry and arduino type projects recently. While browsing I came across this board called nodemcu.
Following some instructions I found online I have made this little temperature logger which sends data to the Internet every few seconds and displays it on a graph using thingspeak.
It was relatively easy to put together following the instructions and cost maybe 10-15 quid in parts (mostly from aliexpress)

Could be an interesting little project for those who like a bit of tinkering.
Can't remember the exact website where I got the instructions but if you search thingspeak nodemcu temperature logger you should be able to find it.

[JabbA]

They're great little devices, aren't they! I replaced the ST-1000s in my fermenter and kegorator with one. If you fancy a bit more control over the UI, have a look at NodeRED.



Cheers,
Jamie

[chris246810]

Nice. How easy was that to set up? I know next to nothing about coding. My project so far have all been just following step by step instructions.

Currently making a brewpi for my fermentation but might look into using this for my keezer if it's not too difficult.
I bought a few of them as they were really cheap, thinking of using them for monitoring air and water temps for my hydroponic tomatoes as summer is just around the corner. Possibly even monitoring ph values of nutrient solution if I can work out how to do it.

[JabbA]

I know next to nothing about coding

Same here! I only got into palying with Arduino after seeing it for the first time on here!

NodeRED is really easy to get to grips with, just a case of dragging nodes together and wiring them up! The ESP 8266 sends data via MQTT over wifi to my RaspberyPi, but there are plenty of cloud based hosts.

Cheers,
Jamie

[chris246810]

Sweet, I'll have a play with that then

[Rad]

Check out the BrewPiLess project. That's what I'll start using soon. Much simpler to build than a full BrewPi and pretty much equivalent in functionality.

[JabbA]

That's for that Rad, I'll have a more indepth look. I'm wanting to implement steped fermentation profiles and it'll be interesting to see how he's done it.

Cheers,
Jamie

[alexlark]

Rad, you bought any components yet for that BrewPiLess build?

[chris246810]

Thanks rad, i hadn't heard of the brewpiless before.
Just changed my thingspeak logger over to a brewpiless, was relatively easy to do, seems almost as good as brewpi and It does thingspeak logging too so I can check temps from anywhere.

Might even make another so I can use the pi out of my existing brewpi for something else

[roscoe]

the Sonoff TH is completely hackable has a relay and socket for a temp probe, even in a kinda box
ESP8266 based
cost me about £8.50 inc del

[AnthonyUK]

the Sonoff TH is completely hackable has a relay and socket for a temp probe, even in a kinda box
ESP8266 based
cost me about £8.50 inc del

You can also buy the basic type for £4 and add a DS18b20 using the custom firmware available which makes it much more useful.

Here's one I've flashed.

[chris246810]

Do they do a 2 relay version or can they be linked together somehow?

[chris246810]

What size are these things. I'm wondering if they could be made to fit inside a standard single or double lighting/socket backbox

[AnthonyUK]

Do they do a 2 relay version or can they be linked together somehow?

There are duo and quad versions.

http://sonoff.itead.cc/en/products/sonoff/sonoff-dual

What size are these things. I'm wondering if they could be made to fit inside a standard single or double lighting/socket backbox

They do a wifi switch so it doesn't even need to be fitted where the switch goes. In the ceiling would be ideal.

[chris246810]

Sweet. I'm buying some of these. Hopefully can find somewhere in the UK that have them at a decent price. I hate waiting for stuff from china