Temp inside a fridge

[AlphaJohn]

Looking for something that works with HassIO that can monitor and log temperature inside a fridge?

I know Wifi doesn't work but has anyone tried Zigbee or another solution?

 

[epah]

Storing a live human heart in your fridge?

 

[s0lar]

Yes did a POC with LoRa with great success. Sold the solution to a big business that required their huge fridges to be monitored.

 

[AlphaJohn]

Storing a live human heart in your fridge?

No wanna know if **** like this:


No power at home for 8 hours.

Means my food defrosted or not.

 

[PsyWulf]

SONOFF SNZB-02 - ZigBee Temperature And Humidity Sensor

SONOFF SNZB-02 ZigBee 3.0 Mini Indoor Temperature and Humidity Sensor for Checking the Room Climate.

sonoff.tech

-10 to 40 degrees
Some report success using them,i'd stick it in a bag and blast it with dry scuba air to keep moisture crystallization out

 

[Bikerbob]

 

[AlphaJohn]

Yeah think I am gonna go the cabled route. Have a TH 16. Was wondering if spending R230 for a Zigbee was worth it cause I tested pinging my phone and it died the moment the door closes.

Google is giving me mixed results on 433hz

 

[Park@82]

yes please!

 

[riscbroker]

You could try something like this - the thermocouple shown here is probably for high temp work but I have a couple of K-type thermocouples with a silicone sleeve that are so thin you can just run them between door and seal without problems. Or drill a 2mm hole through the fridge wall's and poke it through. You'll have to figure out how to make it talk to HassIO/ Home Assistant, I'm not smart enough for that.

Edit: or just drill a hole and poke the probe from a Sonoff TH 16 through.

MAX6675 K-Type Thermocouple Temperature Sensor

Instructions for setting up MAX6675 Thermocouple temperature sensors.

esphome.io

 

[AlphaJohn]

-10 to 40 degrees
Some report success using them,i'd stick it in a bag and blast it with dry scuba air to keep moisture crystallization out

Thats no good. So Zigbee def out.

TH16 can handle -40 and my fridge is set to -15

 

[PsyWulf]

Thats no good. So Zigbee def out.

TH16 can handle -40 and my fridge is set to -15

I wonder if your fridge really is that cold

 

[AlphaJohn]

I wonder if your fridge really is that cold

well... erm, will tell you tomorrow.

 

[WAslayer]

@Tinuva don't you have the Xiaomi aqara temp/humidity sensors monitoring your fridge..?

 

[Park@82]

well... erm, will tell you tomorrow.

you mean freezer don't you?

 

[Tinuva]

@Tinuva don't you have the Xiaomi aqara temp/humidity sensors monitoring your fridge..?

Yip, zigbee. In fridge, not freezer just in case.

 

[qscwbt]

take a plastic cup fill it halfway with water and freeze.
Once frozen put a coin on top.

if it defrost the coin will sink and you know food maybe spoiled even if the water freezes again

 

[AlphaJohn]

take a plastic cup fill it halfway with water and freeze.
Once frozen put a coin on top.

if it defrost the coin will sink and you know food maybe spoiled even if the water freezes again

OMW Soo old school but functional

Why I not think of that!!

I wonder if your fridge really is that cold

And the Zigbee is dead:



And sorry yes the Freezer part of the Fridge/Freezer. Why would I care if my Sprite defrosted?

Edit: Oh and yes I am blond, forgot I had this meter. Has both alarm and memory functions, so can set alarm for 0ºC.

 

[PsyWulf]

Why would I care if my Sprite defrosted?

How fast do you think a freezer defrosts?

 

[RedViking]

No wanna know if **** like this:

View attachment 1492693
No power at home for 8 hours.

Means my food defrosted or not.

Whats wrong with your inverter.

I have a frost free fridge. Biggest mistake in South Africa. You want a fridge that has enough ice build up to replace Mount Everest.

 

[AlphaJohn]

How fast do you think a freezer defrosts?

That's the thing if you don't open the door takes 8-10 hours. Mrs did open it this morning before we left so don't know 100%.

Today might not such a big issue but this is also not the 1st time, been having it more and more last month we even had 3 days of no power. So I am planning to prevent a problem

Not to worry got my solution. Will just use my TM308 as mentioned above.