Wireless beer fridge temperature logger

sladeywadey · Post by **sladeywadey** » Fri Jul 10, 2015 10:50 am

thanks!

This 8266 stuff is looking interesting. https://github.com/carlhako/BrewESP

Fil · Post by **Fil** » Fri Jul 10, 2015 12:48 pm

use the program header installed to reflash the device, use stc1000+ V 1.08
then take power and gnd from the header and every 48 seconds the ispclk pin will pulse with the signal of the data packet containing the current temp. It Uses the Fine Offset protocol, Fine Offset being a us manufacurer of weatherstations and they have remote wireless sensors that broadcast temp and humidity data..
Thankfully a chap called Luc Small has written an arduino library to demodulate the broadcast so all the hard work has been done

however with a smart device connected to the program header of the stc1000 you have the ability for 2 way comms querying and setting the device, Im just using a cheap Rf Tx.. board to broadcast the regular message and picking it up remotely.

sladeywadey · Post by **sladeywadey** » Fri Jul 10, 2015 1:15 pm

thanks Fil - turns out my STC isn't the programmable one

Jocky · Post by **Jocky** » Fri Jul 10, 2015 1:19 pm

AnthonyUK wrote:I use a Raspi as it only requires a DS18B20 sensor to work as a temp logger.

Can you share some details on this - what software are you using?

I have a Raspberry Pi and several waterproof DS18B20 sensors, but haven't found a ready made software package for logging and uploading.

AnthonyUK · Post by **AnthonyUK** » Fri Jul 10, 2015 2:20 pm

I'm reading the temps from 5-6 DS18B20s and logging them into an RRD from which I can graph the results.
The Raspi is running LigHTTPD to display the graphs.
Example

There are loads of guides all doing things slightly differently

http://blog.turningdigital.com/2012/09/ ... r-rrdtool/
https://blog.bartbania.com/raspberry_pi ... log-howto/

dean_wales · Post by **dean_wales** » Fri Jul 10, 2015 3:04 pm

You guys are fairly rapid emulating the logging ability of BrewPi on a shoestring.

Bravo!

Fil · Post by **Fil** » Fri Jul 10, 2015 5:23 pm

dean_wales wrote:You guys are fairly rapid emulating the logging ability of BrewPi on a shoestring.

Bravo!

well ive orderd one of the ESP8266 WiFi modules Andy is using and will be connecting upto the stc1000 directly as soon as it arrives

sladeywadey check out this US stc1000+ forum thread by the hacks author, there are some v1.1 that can take the hack and a source for the original devices too. lot to wade thru tho.. http://www.homebrewtalk.com/showthread. ... 8&page=182

Post by **Andy** » Fri Jul 10, 2015 5:35 pm

Don't forget that the 8266 is a 3.3v device

Post by **Andy** » Fri Jul 10, 2015 5:39 pm

Updated the logging site to https://thingspeak.com/channels/46252

Fil · Post by **Fil** » Fri Jul 10, 2015 6:52 pm

Andy wrote:Don't forget that the 8266 is a 3.3v device

cheers.. but i had spotted that, i will have to get the meter out and find 3.3v on the stcboard or invest in a buck converter..

Post by **Andy** » Fri Jul 10, 2015 6:56 pm

Cool! Both Power and data must be 3.3v, I guess data is more of a challenge ?

Fil · Post by **Fil** » Fri Jul 10, 2015 7:34 pm

Andy wrote:Cool! Both Power and data must be 3.3v, I guess data is more of a challenge ?

oops that i think i will need to do a few evenings/weeks reading up on ....
or stick an arduino inbetween? but i think a simple voltage divide may suit as long as its on off digital coms..

chris2012 · Post by **chris2012** » Fri Jul 10, 2015 8:44 pm

If you want to convert 5V logic to 3.3v and vice versa - https://www.coolcomponents.co.uk/logic- ... ional.html
works great

Post by **f00b4r** » Fri Jul 10, 2015 9:14 pm

Fil wrote:
dean_wales wrote:You guys are fairly rapid emulating the logging ability of BrewPi on a shoestring.

Bravo!
well ive orderd one of the ESP8266 WiFi modules Andy is using and will be connecting upto the stc1000 directly as soon as it arrives

sladeywadey check out this US stc1000+ forum thread by the hacks author, there are some v1.1 that can take the hack and a source for the original devices too. lot to wade thru tho.. http://www.homebrewtalk.com/showthread. ... 8&page=182

The link to the source of original flashable hardware is also on the firmware Github page.

Fil · Post by **Fil** » Fri Jul 10, 2015 10:18 pm

chris2012 wrote:If you want to convert 5V logic to 3.3v and vice versa - https://www.coolcomponents.co.uk/logic- ... ional.html
works great

magic thanks.. saved me a weeks worth of browsing at least

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Wireless beer fridge temperature logger

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