LMC555: LMC555 not working

Hello Nasib,

3V is too low voltage to light LED. If it is working at all, pins [2,6] should vary between 1V and 2V

that is what i am seeing. I also tried to feed the leds directly from the trig pin by removing the transistor and increasing the R101 to 16ohm to avoid the 0.7VBE. But in that case i can not see any generated signal. Do you figure out any way to use this system from a 3V rail ? 

Nasib,

For 3V supply and entirely new circuit would be suggested. I suggest PWM to set LED intensity. This will work better and be more power efficient. 

Start by looking here https://www.ti.com/power-management/led-drivers/products.html#1130=0.05%3B1&238min=-0.3%3B3&