DIY relay motor driver

Written by: roboguru


Designed for experimental purpose this relay logic circuit may work in combination with a rolling shade motor. The circuit consists of two monostable relays, two momentary switches and some basic componets.  Depending on the duration of the push, the motor works manually or automatically. If the push lasts for 4 seconds or less the motor stops once the button is released. If the button is pressed for more than 4 seconds the motor keeps on and can be stopped by pressing briefly the opposite direction button. No relay works if both buttons are pressed. In the image  you can see the control circuit.


DO, DC - direction relays
OLS, CLS - limit switches
SBO, SBC - direction buttons
Power supply : 12VDC 

Warning and disclaimer: the information within this project is provided as is. No warranty or liability is expressed or implied.