This project demonstrates how to drive a 28BYJ-48 stepper motor using the ULN2003A Darlington transistor array with an ESP32 or ESP8266. The ULN2003A is used as a current amplifier and switch to ...

In Part 1 of this two-part series, we presented a 3-phase, 480VAC motor circuit with its associated controls (Figure). We stepped through a logical, systematic approach to troubleshoot the main power ...

When you get the call, “The motor won’t start,” you’d best have a logical and systematic plan in place to approach the problem. “Easter egging” just doesn’t work unless you happen to be very lucky!

Paralysis, one of the most common and debilitating outcomes of severe damage to the central nervous system, continues to cast a long shadow of hopelessness on millions of lives worldwide. Despite the ...