Arduino, Thermocouples, MAX6675 and SPI – The Fine Points

Just install the library and you’re done. Or so you might think …
↓↓↓ Complete description, time index and links below ↓↓↓

You want to measure temperatures up to 1.000°C/1.800°F with an Arduino? Use a MAX6675 thermocouple-to-digital module! They’re a cheap, supported and easy solution, featuring a SPI-compatible interface.

However, the raw data from the MAX6675 needs some filtering. And while there is a MAX6675 library available for the Arduino, there are reasons not to use it. Also, be aware of shorts you might create using multiple thermocouples.

00:00 Intro – where I left off during a mailbag video
02:02 Code and circuit – from the internet: fast and easy
05:06 Data – lots of noise and not very precise
08:55 Filtering – a simple (modified) moving average does the job
13:29 Timing – the MAX6675 is not the fastest
18:18 Multiplying – the number of sensors, because it’s easy enough
23:26 Shorting – things out using thermocouples
29:19 Rewriting – the Arduino MAX6675 library for real SPI

Tutorials: https://www.youtube.com/playlist?list=PLwq-2MnM58FKn3920rc1V0qoTsQDheTIw
Mailbag: Hot Plate, Arduino Nano, Thermocouple, MAX6675 Module and More https://youtu.be/Q4XTfRTT3I4

#robertssmorgasbord #tutorials #tutorial #how-to #Arduino #thermocouple #MAX6675 #SPI

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