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Various questions using BBQ cooking monitor


#1

Thanks for making this!

Is it possible to get this sent to a computer and not a phone app? I want to datalog on an excel spreadsheet and output to a simple microcontroller.

Is there a simple way to do this?


My BBQ cooking monitor - ESP8266 dual K-probe via MAX31855 & OLED display
#2

You can export the history in CSV format from the graph in the app.


#3

Dave,

Thanks for your reply. This still requires a phone to perform the request. Is there anyway to just send this information to a PC or other separate logging device?


#4

Yes, search for “thingspeak”


#5

This seems to send to a cloud and only has a free evaluation period. I just want to send the signal directly to an offline laptop/pc.

Sorry for my lack of experience here. I’m sure there’s a “language barrier” not allowing to to communicate well with you.


#6

I think you’re just asking the wrong part of the internet…


#7

Do you mean without going through the internet? If it is just you don’t have a phone I have used it on an android emulator on my pc. (Free)


#8

Dave, I mainly want the data input into a host file (like excel) and not on the internet.


#9

Maybe try local server (I haven’t used local server yet) put the data in a super chart. Click the three dots. There is option to export to excel.


#10

I didn’t know of this feature. I’m going to build this, this weekend. I just wish there was an automatic data capture on a PC. Oh well, this is where the fun begins!


#11

http://docs.blynk.cc/#widgets-displays-superchart

Also see…

http://docs.blynk.cc/#widgets-other-reports-widget


#12

Line 278 I’m getting “‘NO_MAX31855’ was not declared in this scope”

All libraries are installed not sure what the issue is… Help?


#13

@ Dave Blynk are you using Blynk as a crock pot monitor!


#14

You don’t have this library installed properly:

The .zip file you download from GitHub won’t install using the add.ZIP library option in the Arduino IDE - you have to manually unzip it and drag the MAX31855 to your Arduino libraries folder.

Pete.


#15

Pete, thanks for your reply.

I deleted the previous library and installed (manually) the one you attached and I’m getting the dreaded “MAX31855.h: No such file or directory.” I looked in the folder just to make sure the .h file was named correctly and it does indeed match MAX31855.h

Any ideas? It’s manually installed in my libraries folder (and showing up) but it’s not showing up in my contributed libraries on the IDE…


#16

I figured it out. That library needs to have the .h file moved forward. I moved it from the subfolder to the front and now it recognizes it…

Anyone ever try the MAX31856 folder?


#17

I did mention that in my post.

Pete.


#18

Newest addition. Mind you I’m using a dedicated PC in the garage. I didn’t have any of this last night.

c:/users/lance/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: sketch\WiFi_Dual_TC.ino.cpp.o: in function `checkHeatTemp()':

C:\Users\Lance\Documents\Arduino\WiFi_Dual_TC/WiFi_Dual_TC.ino:322: undefined reference to `MAX31855::readThermocouple(unit_t)'

c:/users/lance/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\Lance\Documents\Arduino\WiFi_Dual_TC/WiFi_Dual_TC.ino:322: undefined reference to `MAX31855::readThermocouple(unit_t)'

c:/users/lance/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: sketch\WiFi_Dual_TC.ino.cpp.o: in function `readMAX31855FoodProbe()':

C:\Users\Lance\Documents\Arduino\WiFi_Dual_TC/WiFi_Dual_TC.ino:298: undefined reference to `MAX31855::readThermocouple(unit_t)'

c:/users/lance/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: sketch\WiFi_Dual_TC.ino.cpp.o: in function `loop':

C:\Users\Lance\Documents\Arduino\WiFi_Dual_TC/WiFi_Dual_TC.ino:528: undefined reference to `MAX31855::MAX31855(int, int, int)'

c:/users/lance/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: sketch\WiFi_Dual_TC.ino.cpp.o: in function `_GLOBAL__sub_I_Blynk':

C:\Users\Lance\Documents\Arduino\WiFi_Dual_TC/WiFi_Dual_TC.ino:535: undefined reference to `MAX31855::MAX31855(int, int, int)'

c:/users/lance/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\Lance\Documents\Arduino\WiFi_Dual_TC/WiFi_Dual_TC.ino:536: undefined reference to `MAX31855::MAX31855(int, int, int)'

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Generic ESP8266 Module.

#19

What version of the Arduino Core do you have installed on that PC?

Pete.


#20

The newest I believe. 1.8.8.