Temperature controlled on off relay circuit using LM393
The temperature controlled on off relay circuit,main ideals is thermistor will change its resistance.IC1-LM393 to bias transistor to drive relay works. […]
Motor Controller
Learn ULN2003 stepper motor driver circuits and pinout
How to use ULN2003 stepper motor driver for microcontrollers, Arduino, PIC, MCS51, etc. It’s easy to use, small, and cheaper than transistors.