I have been using the MAX31855 (Thermocouple Amplifier MAX31855 breakout board (MAX6675 upgrade) : ID 269 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits) with the Type-K Thermo-Couple (https://www.adafruit.com/products/270).
Initially I tested all of them on the bread board individually and they worked fine. I then soldered the MAX31855s onto a protoboard and soldered wires to the protoboard that would connect to the arduino. I originally did this with a seperate CLK, CS, and DO for each MAX31855 (I have 3). Then after I had issues I looked through all of the other threads on this same issue and one of the suggestions was that the MAX31855s can share a CLK and a DO. I then soldered the connections shown on the bottom of the protoboard (pictures below) to create a common DO and a common CLK for the MAX31855s.
Also, per the suggestions of the numerous other threads on this topic I have checked all of my connections numerous times both visually and using a multimeter.
The only output I am getting is 32 degrees F, 0 degrees C. The same is true when I read the internal temperature of each of the MAX31855s.
Someone please help.
Code and pictures attached
program.ino (4.75 KB)