What 4-20mA actually means (and why your zero is at 4)

Most industrial sensor data still travels as a current between 4 and 20 milliamps. What the signal is, how it becomes a number in your database, and the ways it can quietly be wrong.

July 26, 2026 · 9 min · Marius Gjerd

Can you trust your sensor data? A developer's guide to the full stack

Your sensor data has been transformed, compressed, timestamped, and approximated before it reaches your application. Here’s the full journey, and where to be suspicious.

June 30, 2026 · 6 min · Marius Gjerd