Well..here's another one. I made a proximity sensor for a robot project. Today i went a bought a toy car for $8. I opened it and took out the motor along with axle to drive four tires ( its dissembled at the moment). The objective was simple. To add a motor to the collector of the transistor and use the transistor as a switch. . When the proximity sensor senses an obstable, it drops to 0.34 V and causes the transistor to turn off---then led goes out. When there is no object the output of the photo transistor goes to 0.78 V and thus turning on the transistor
I have already made the circuit on stripboard. When i temporarily connected the motor is series with the led, the led light went further bright. I also connected it in parallel to the led(to act as a snug diode configuration--check schematic named 'configurations') the led went out.--it didn't blow out..it still works..in case any of you jumped to that conclusion
I wanted to test the motor to see if it working, just to be sure, i connected it directly to a 9v battery, Didn't work...Odd. I then made a quick voltage diving circuit to to vary 5 volts across it using a power supply. It spun. The motor works. I also made a very simple circuit to see why the motor was working (observe motor-test in attachment). That too didn't work.
Now I have a empty structure of a car, a sensor (designed) and a motor..all ready to be used as a project prototype for initial development of a robot.
What is going on with the motor..i don't know...
help!!!!
I have already made the circuit on stripboard. When i temporarily connected the motor is series with the led, the led light went further bright. I also connected it in parallel to the led(to act as a snug diode configuration--check schematic named 'configurations') the led went out.--it didn't blow out..it still works..in case any of you jumped to that conclusion
I wanted to test the motor to see if it working, just to be sure, i connected it directly to a 9v battery, Didn't work...Odd. I then made a quick voltage diving circuit to to vary 5 volts across it using a power supply. It spun. The motor works. I also made a very simple circuit to see why the motor was working (observe motor-test in attachment). That too didn't work.
Now I have a empty structure of a car, a sensor (designed) and a motor..all ready to be used as a project prototype for initial development of a robot.
What is going on with the motor..i don't know...
help!!!!
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