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Hi,As my sensor is working fine I need to couple sensor with L293 without uC for testing purpose.So, i have connected the L293 as shown in image. i have changed the pin 8 to 5V then 12Vthe output of LM234 is connected to LED with 570ohms. which is working fine. after this the pin 1 of LM324 is given to pin 2 of L293.I am not understanding the motor with sensor is not working??, the H-BRIDGES are working fine!!
Are you saying that the L293 drives the motor if you set pin 2 high and low manually
but not when the LM324 drives it?
What's with the LED and resistor (that you claim to be 570 Ohm??)?
Is that still on when you connect it to the L293?
QuoteIs that still on when you connect it to the L293?yes and the LED then go off.Note:-i am using 5V from 7805...!!
Your first step (as always when something don't work) is to measure, to get a view of what's going on, so measure the input of the L293 (with the LM324 connected) - what voltages do you see (dark/light)?
But here in L293 it does not work with single 1K Resistance so, i think that must be the problem.Anyway the low output of l324 is ~.2v and to 4.5V max.
Will 5V supply will work fine with both sensors and L293?? from 7805!!as at 12V the RPM of more increases!
There is some problem the out put of 7805 fall to ~2.2V while connecting it to L293, some times.and when it was ~4.8V the L293 was working fine with sensors.without any diode and pull down Resistance!!
What power source do you use in front of the regulator, a mains supply or battery and i the latter, which type, capacity and state of charge.
QuoteWhat power source do you use in front of the regulator, a mains supply or battery and i the latter, which type, capacity and state of charge.Hi,I am using 12V 2Amps adapter!!