Wireless beer fridge temperature logger

Post by **Andy** » Sun Jul 12, 2015 3:52 pm

Got one of these on order now

http://www.ebay.co.uk/itm/321747368097

Dev board for the ESP8266, interestingly has a 240v 10A relay built in

Very brewing-project compatible !

Fil · Post by **Fil** » Sun Jul 12, 2015 4:58 pm

fwiw 3.3v will drive a SSR comfortably..

Post by **Andy** » Sun Jul 12, 2015 5:05 pm

Good to know!

I like these dev boards as they contain all the USB->serial stuff needed to program the 8266, have all the 8266 pins exposed and add relay/led/buzzer/temp sensor capability all on one board.

For £10 that's good value IMO

Fil · Post by **Fil** » Mon Jul 13, 2015 2:49 pm

my lil board arrived this morning its a shame but the ftdi usb/serial programmer is on a slow boat from china still ;(

what PSU set up have you used andy? the arduino's ive been using are much more flexible when it comes to the power in ..

Post by **Andy** » Mon Jul 13, 2015 2:57 pm

My setup is on breadboard using a cheap breadboard PSU

http://www.ebay.co.uk/itm/MB102-Breadbo ... 1072880673

Fil · Post by **Fil** » Mon Jul 13, 2015 3:24 pm

Andy wrote:My setup is on breadboard using a cheap breadboard PSU

http://www.ebay.co.uk/itm/MB102-Breadbo ... 1072880673

Cheers i was looking at those on ebay and trying to think why it would be a bad fit

I tend to make my 'production' projects with mini breadboards dupont terminated prototyping wires and hot glue

- i am dangerous with a soldering iron

Belter · Post by **Belter** » Mon Jul 13, 2015 5:31 pm

Ok I've bought pretty much everything linked to on this thread. I hope one day I'll be able to work out what the hell I need it for. Until then I'll be following this thread closely.

Fil · Post by **Fil** » Mon Jul 13, 2015 9:21 pm

Belter wrote:Ok I've bought pretty much everything linked to on this thread. I hope one day I'll be able to work out what the hell I need it for. Until then I'll be following this thread closely.

Your only limit is your imagination

start with checking out "The internet of things" it will give you a good idea of the current scope of the esp8266 projects..

Porting arduino solutions to the esp8266 isnt as easy n clean as i would have hoped, but early days yet

Post by **Andy** » Mon Jul 13, 2015 10:06 pm

I found lots of good info here -> https://www.openhomeautomation.net/clou ... r-esp8266/

He's using a different ESP8266 module to me but that makes little difference.

Belter · Post by **Belter** » Mon Jul 13, 2015 10:25 pm

Am I right in thinking your temperature sensor is just sensing ambient temps? It's not an actual probe is it?

Fil · Post by **Fil** » Tue Jul 14, 2015 4:38 pm

You can just solder on a lead to one of the Dh22 or 11 sensors Belter, and there is a esp8266 lib for using the ds18b20 sensors too afaik..

postie delievered a usb programmer and some 5v-3.3v logic level converters too

problem is i fried my Rf Rx board the other day.. ho hum..

Post by **Andy** » Tue Jul 14, 2015 9:17 pm

Revised board layout, now using an ESP-201 form factor with an external aerial.

sladeywadey · Post by **sladeywadey** » Tue Jul 14, 2015 10:24 pm

good stuff Andy - I'm watching this with increasing interest..

Post by **Andy** » Wed Jul 15, 2015 6:58 pm

New stuff arrived:

DHT22 sensor to replace the DHT11, DHT22 has a +/- 0.5 degC accuracy vs +/- 2 degC for the DHT11
And a DS18B20 digital temp sensor/probe to have a play with.

And, thought I'd bricked the ESP8266 when I uploaded a new sketch update. All fixed now though

Fil · Post by **Fil** » Mon Jul 20, 2015 4:21 pm

help!!! trying to wire up the above, i have no 10k resistors, just 6.8k and 33k, and nothing between.. will the 6.8k suffice????

Tia..

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Wireless beer fridge temperature logger

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