Connecting MAX31855 with Mega 2560 Rev

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anaalves
 
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Connecting MAX31855 with Mega 2560 Rev

Post by anaalves »

Hi There, We are trying to connect 3 themopares with the amplificator MAX31855-Adafruit utilizing an Arduino Mega 2560 Rev 3 and multiplexer TCA9548a,  however, we are finding some difficulties to connect the cables. Please, could you help us, giving some orientations on how to have the right connection?

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adafruit_support_carter
 
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Re: Connecting MAX31855 with Mega 2560 Rev

Post by adafruit_support_carter »

The MAX31855 uses SPI.

The TCA9548A is for use with I2C devices.

To use multiple MAX31855's, share the CLK and DO pins. Wire those to the Mega's default SPI bus. Each module needs a separate chip select (CS) pin. This can be any available GPIO pin.

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