I have a two relay module that activate on 0 volt. This is a 5 volt module.
I have 4 pins ( +5v,GND,IN1 and IN2) Also I have a "weird" 3 pin with a jumper ( JD-Vcc, Vcc, GND) Default is using jumper between 1 & 2. I have no clue for what they are used for.
All what I want is to latch Relay 2 when a short pulse ( Positive Pulse of 3 volt) applied to IN1 Relay 1
P.S. I believe I need to invert the triggering pulse to negative , but I do not know how.
Your help will be greatly appreciated.
I have 4 pins ( +5v,GND,IN1 and IN2) Also I have a "weird" 3 pin with a jumper ( JD-Vcc, Vcc, GND) Default is using jumper between 1 & 2. I have no clue for what they are used for.
All what I want is to latch Relay 2 when a short pulse ( Positive Pulse of 3 volt) applied to IN1 Relay 1
P.S. I believe I need to invert the triggering pulse to negative , but I do not know how.
Your help will be greatly appreciated.