I came across this some hours back and thought it was heaven sent! (except.......!) I had been struggling with using code in the Adafruit library and whilst I have got my MAX31855 functioning and displaying temperature with their sample program it was far from ideal because it is Python2 based and ...

IIRC, I also noticed similar behavior when I had issues with my CS line connections -- it would happen when one chip talked over another, so to speak. I tested the script for days without error in its current form. You could always try a MS pause between reads to see if that helps. An alternative wo...

Every pin can be shared except the cs_pin. Take a look at the multi-chip example in the main file: https://github.com/Tuckie/max31855/blob ... 55.py#L146

Readme has been updated! You can actually use either pin assignment, if GPIO.BOARD is your thing ;) For example: from max31855 import MAX31855, MAX31855Error cs_pin = 24 clock_pin = 23 data_pin = 22 units = "f" board = GPIO.BOARD thermocouple = MAX31855(cs_pin, clock_pin, data_pin, units, board) pri...

JCanada wrote:What I didn't realize, is that the designated pins (24, 23, and 22) are NOT the pin number on the PI itself, but rather the GPIO pin number!

So sorry for the confusion on this! I'll update the readme to clarify things.

awootton wrote:I got it from here:-
http://www.skpang.co.uk/catalog/quick2w ... -1170.html

and the company website:-
http://quick2wire.com/products/quick2wi ... board-kit/

thanks for your input, Andrew

So... where's the MAX31855?

awootton wrote:its the Quick2Wire board that I assembled from a kit - which is why I have been a bit suspicious that I might have a dry solder joint

Sorry, I can't find the board you're refering to, could you include a link?

Which breakout board are you using? I want to make sure that you don't have any wires/pins crossed.

Apologies for my rudimentary python knowledge. I'm trying to work out whether I have a hardware or software problem. No problem. 1) is the OK message in test_max31855/py indication that hardware is all fine? That's just for testing the conversion function for converting the bits to the proper tempe...

Heads up to anyone using this, or looking to use this. I've released a version 2.0 that has removed all dependencies but the GPIO lib. I've converted to SPI bitbanging so no fancy SPI config is needed and you can use whatever pins you want. This came a result of me wanting to use more than two MAX31...

http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus#Independent_slave_SPI_configuration The Raspberry Pi has support for two spi devices via CE0 and CE1. In the wiki article, it is SS1 and SS2 one_probe = MAX31855(0, "f") another_probe = MAX31855(1, "f") Note, I haven't actually tested this...

Just finished this up for those that are interested: https://github.com/Tuckie/max31855

Edit: version 2.0 released. More chips. Less dependencies.