rocket scream thermocouple prototype board

[paddygoat]

#3613

I used one on of the rocket scream prototype boards to build my own thermocouple interface and despite the challenges of soldering microsopic SMT components, I got it to work very nicely on my uno 😀 , just had to add a few capacitors, but now have a problem getting it to work with my own boards:

I spent hours checking the connections over and over again and have concluded that there is something missing, a component perhaps, on my PCB. I was thinking maybe it is something to do with the 16Mhz resonator I am using – is this compatible with the MAX31855? Any help much appreciated.
PS. the LCD reads 0.00 degrees C on both the internal and the probe lines.
PPS. My boards work fine in every other respect.

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