K-Type / MAX6675 build in

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Re: K-Type / MAX6675 build in

#51 Post by nakittaja » 24 Jan 2019, 21:42

Hi. I have nodemcu and a MAX6675. Problem is that i only get 0C/32F readings in ESPeasy mega - same as the whose sensor board was disconnected.

What settings do i have to change in Espeasy mega? Enable SPI interface - already did that.
Checked pins thrice, VCC is in 3.3V output...i dont have a clue what is wrong.

Any advice? i already ordered a second sensor board..maybe i got a lemon from china.

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Re: K-Type / MAX6675 build in

#52 Post by stafil » 03 Apr 2019, 21:45

Hi, what SPI clock or speed is set for max6675 in SPI.begin() ?


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Re: K-Type / MAX6675 build in

#53 Post by remko2000 » 09 Oct 2019, 19:35

maybe a stupid question but I have a max31865 with a P100. Does this plugin also works with this breakout?

Max Meyer
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Re: K-Type / MAX6675 build in

#54 Post by Max Meyer » 13 May 2021, 11:57

I know this thread is quite old but I try to control my solar system with the espeasy. Is it possible, that the output temperature of this module is in Fahrenheit?
In the screenshot of the module there are 2 temperatures °C and °F , in the actual module I got only 1 value line.
Did anyone already try the MAX31855? If I connect the same PT1000 from the Max6675 to the 31855 the shown temperature value is getting lower as the sensor temperature rises and the values are completely different (Sensor is about 50°C value of module shows 9°)

Kind regards

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Re: K-Type / MAX6675 build in

#55 Post by TD-er » 13 May 2021, 12:02

You can also convert the Celcius value using a formula, which is also shown on the system variables page (not present in 1M or testing builds)

Code: Select all

{D}C to {D}F: %c_c2f%(20.4)
°C to °F: 68.72

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