The Pax Instruments T400 is a simple, accurate, inexpensive, open source, four-channel temperature datalogger. Pax Instruments T400: first of a new class of affordable lab instruments A Little History A few years ago, I was engineering a new product and trying to log the temperature at multiple points within my device. I found myself needing …
We’ve seen a lot of coffee roaster builds over the years. [Ben Eagan] started his with a hot-air popcorn maker. If you think it is as simple as putting beans in place of the popcorn, think again. You need to have good control of the heat, and that requires some temperature monitoring and a controller — …
Determining the state of our health has always been a matter of finding a way to monitor and measure the body’s most basic functions. Before instrumentation, visual indicators were used that allowed us to know, for example, what our body temperature should be, what a healthy pulse is, and what an acceptable respiration rate is. …
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