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2PCS MAX6675 Module,Aideepen DC 3-5V MAX6675 k thermocouple sensors Type K SPI Interface.
- Interface: SPI
- Test temperature range: 0 ℃ ~ 1024 ℃, the converter temperature resolution is 0.25 ℃
- Module size: 15mm * 28mm, with a 3mm diameter screw holes
- K type thermocouple junction location, use 301 ordinary terminals
- Application: Industrial, Appliances, HVAC
Aideepen 2PCS MAX6675 Module+K Type Thermocouple Temperature Sensor Set M6 Screw with Free Cable DC3~5V
- Shipped with 2PCS MAX6675 module, 2PCS K-type thermocouple with free dupont cable.
- Simple SPI serial port temperature value output, its temperature resolution capability is 0.25℃, cold junction compensation range -20℃～ 85℃, wide operating voltage range DC3~5V.
- Combined the module and the IO port of the MCU via dupont cables, the temperature value of the K-type thermocouple can be directly read using the SPI protocol.
- Module interface: GND VCC SCK CS SO; Set screw M6 terminals.
- MAX6675 module is a 12-bit resolution serial thermocouple analog-to-digital converter, internal integrated cold junction compensation circuit, linearity correction, and thermocouple break detection.
Eric the BBQ guy
2025-08-07 09:49:18
The Arduino libraries for this thermocouple amplifier / digitizer board are all pretty simple to implement and work well. The chip itself has a MAXIMUM sample rate of ~100ms...which is more than fast enough since the thermocouple itself likely isn't coming to temp that fast (in my case), and the system i'm measuring has a system response that i need to monitor and react to every few minutes. In my case, milliseconds just don't matter that much.Then, my confidence high, I tried to read this IC's output using a STM32 Blackpill. that was an exercise in frustration. At this point, I'm convinced the Arduino IDE is incapable of correcting the timing such that communication happens. If you need this to work on a STM32 Blackpill, assume you'll need to program it from bare-metal and manually configure the clocks and dividers.
R. Shine
2025-07-29 11:31:25
I had no problem getting these to work with my Arduino. I got these thermocouples to monitor oven temperature over time. I used different connection wires than what was provided since I used a breadboard and needed male-to-male not female-to-female connections.Expect the cables to be within 2 degrees of actual temperature. This if fine for my oven monitor. Problem is the thermocouple wires were a little short for what I was trying to do so had had to buy some longer cables. So for me I would have been better off just buying the MAX6675 interface board by itself.Overall this kit is built well and works as expected.Enjoy!
Corky
2025-06-29 21:52:45
Excellent board for interfacing thermocouples to my Arduino-based BBQ pit controller. Two things to watch:1. Resolution (due to the Arduino's 1024 step range) --If you are using this with some "D" in a PID control, you may want to use a software filter or average 10-20 readings over time to smooth the temperature readings or the error calculations. The MAX6675+Arduino has about a 0.5°F resolution. In a slow changing process you can get some "derivative kick" when the measurement jumps 0.5°F every so often... Not a big deal for my process, but could cause mechanical wear and tear if you are controlling a mechanical device like a valve.2. If you are driving other devices with a microcontroller (like an SSR) make sure all of your components are properly connected to a single ground plane. I missed a ground connection to my heating element and SSR, and was seeing some very erratic readings untill I corrected it
Daniel R.
2025-06-20 16:43:50
Only one of the two works
Markrob
2025-05-11 10:12:30
Easy to interface to a Nano using hardware spi. I used two boards with separate chip select I/O. I used the stock spi.h and accessed with a simple few lines of code:float read_tc(uint8_t cs){uint16_t msg;SPI.beginTransaction(SPISettings(1000000, MSBFIRST, SPI_MODE1));digitalWrite(cs, LOW);msg = SPI.transfer16(0x00);digitalWrite(cs, HIGH);SPI.endTransaction();if (msg & 0x04) return(-1.0);return(round(float(msg >> 3) * .25); //remove status bits and convert to float deg c}You need to #include AndSPI.begin():You also need to assign digital io to any chip selects.One other thing to keep in mind. The MAX6675 has a conversation time of about 250ms. If you try to read the board too fast, it hangs and returns the same value each sample. This function returns the temperature in degrees C in a range of 0-1023. If the thermocouple is open, the chip detects this and the function returns a -1.0.
Adam
2025-02-27 17:31:32
It works. I want to do multi sampling to reduce variation in my reading but It seems I can only read it about once every 500 ms. If I do any more than that I seem to get duplicate results. If I sample as fast as possible without a delay I get the same result over and over and it never changes, not what I expected this device to do.
Ron Brown
2025-02-25 10:19:34
Just what i needed
Jasmine
2025-02-18 19:35:09
This works great! Even the little green plug is nice. It holds the thermocouple leads very securely. Easy to set up and seems accurate enough. I paired it up with https://smile.amazon.com/gp/product/B07437KXXZ/ref=oh_aui_detailpage_o04_s01?ie=UTF8&psc=1 to measure really high temperatures in the 1000 degree F range.
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