Automatic Aquarium Feeder

Step 2 How its works?

I just hang the food receptacle In the aquvarium's hood, it has small holes in the bottom which small enough to hold or struck foods inside as long as stay still without shake. and attach a dc motor in it for make vibrate some seconds to drop foods, which controller by a 555 timer ic circuit triggered on by the hacked cheap alarm clock. so alarm'll automatically trigger 555 twice a day and 555 runs motor some seconds like 10 seconds in this circuit below. Normally these kinda clocks automatically snooze alarms approximately an hour. ie it took an hour to release the connection. so we can power relay switch through this and turn off the airpumps for an hour until foods clear off

Comments

[magnum_357]

what is really the purpose of the relay switch????

[freaky123]

If we will use a stepper instead of alarm clock....sir, what kind of stepper are we going to buy??...pls anwer mu question pls...tnx

[paulrobinson]

have to do coding with any programmable IC

[Wyle_E]

I don't see the reason for the diode in series with the motor. I'm used to seeing reverse-biased diodes across the terminals of motors and relay coils, to protect the rest of the circuit from spikes generated when the coil is de-energized.