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My BBQ cooking monitor - ESP8266 dual K-probe via MAX31855 & OLED display


#66

Hey mate, how’d you go? I’m using the 1.3 screen OK with a verrry similar project & code , but might have made some tweeks…

Lmk.


#67

hi can someone pls help me, I’ve uploaded the code and have it connected to WiFi however that’s all i get. the oled and temp probs work with other sketches, I’m using a wemos d1 mini. the serial monitor only displays

Cooking heat & food temp MONITOR
File name: C:\Users\the rest of the file name

Thanks


#68

Yeah you might need to check the libraries version currency and stuff like that… I won’t be able to check my one for a few days, so won’t be able to confirm the code is still good.


#69

i started from scratch and installed all libraries again but no change, If you could cheek when you have a chance that would be greatly appreciated. I cant wait to get this going.

Thanks


#70

Have you modified the code with your WiFi etc?


#71

Did you buy already the beef? :yum:


#72

yes i modified the code with my wifi details and blynk key… and yep i have brisket and ribs for the weekend


#73

Maybe you can post your code?


#74

the only part of the code i changed was

const char* ssid = “MY SSID”;
const char* password = “MY PASSWORD”;
char authBlynk[] = “MY BLYNK”;

otherwise it was a direct copy and paste
there wern’t to many options for the libraries i had to get from the net so i assume i have the right ones ie SimpleTimer.h, MAX31855.h, TimeLib.h, RunningMedian.h. but if somone was willing to upload there working libraries ill give that a shot


#75

Code is for local server only,

If you are not running local server - read the whole thread… Look for “blynk cloud”


#76

Can’t believe I missed that, I must have went through the code 50 times, anyways I changed it to work with the cloud and all is working. Turns out in my rush to make this I bought the max6675 not the one described, hopefully I can get it to work with these otherwise I’ll get the right one.
Thank you very much for your help


#77

super!

yes, the MAX type sensor libraries are very close… you should be able to work around any issues by substituting the proper library… i think the variable declarations are very similar…


#78

Hi Dave, I just found your post, I have been trying to figure out on the best parts to use for a long time now and I am still a little bit confused. Your setup looks awesome, but I just have one doubt: for the probes, were you able to find the ones that have the sharp tip?.. I am guessing those are the best ones to use with food. Thank you!


#79

yeah mate, its the non-sharp “1.5mm k probe” on eBay.

if you can’t get that into your raw meat, just use a normal skewer to start a hole, then the 1.5mm probe will fit in fine!

(i don’t put the food probe in until the meat has started to cook anyways…)


#80

Hi Dave,
Thank you for taking the time to respond. I highly appreciate it.

Here is my story:

I have a bbguru temperature controller and the temperature takes forever to read a “stable” temp, compared to my Thermopro bbq Thermometer that is pretty fast and accurate. So, I was wondering were the difference relied, and from my POV, it seems it’s the thermocouple… The bbqguru uses K-Type and the other one uses Platinum RTD (or PT100)… I am highly OCD and want my project to be “perfect” or at least as good as I can so I am using these materials:

Anyways, I just wanted to give you the insight. In case you want to play around with something like this in the future.


#81

@Dave1829 im totally new to this forum and i saw your post about an OTA update web interface from 2 years ago. can you help me out? (pm)


#82

Just post your question/s in the correct forum like normal. It’s as easy as that!


split this topic #83

32 posts were split to a new topic: Various questions using BBQ cooking monitor


#84

@ caldersm,
I’m a bit confused by your work- It looks to me like you are using 3 pins for communication which is a bit different than Dave’s example. I’m using a similar board to yours and having a bit of trouble sorting out pin assignments etc.

In your example,you are calling MAX31856 (I understand that this is a different thermocouple board) and the call requires 4 parameters.


#85

This is the actual ESP8266 board that I’m using. And for clarity, I do have the MAX31855 thermocouple board