electrons.AJ
- Nov 5, 2011
- 7
- Joined
- Nov 5, 2011
- Messages
- 7
Hello everyone!
Glad to be here!
I would like to build a small timer for a washer pump.
I thought an Arduino board would be best, yet a member of the Arduino forums suggested that it would be simple to use a NE555.
I'm pasting here my original thread, and his replies.
I was wondering if you could give me some general direction as to how to hookup this NE555 to the relays, and the mechanical timer.
I have a small camera looking at the beach.
The wind + salty air gets the front glass of the housing all dirty.
I want to install a "windshield washer kit" from Pep Boys ($14 or so), that has a small tank, pump, tubing and nozzles.
Already did it to one camera, and it works awesome.
Yet my "timing" system is a mess/over-complication.
I want to turn on the washer system three times per day (morning, mid-day, afternoon).
At the moment, I have a digital timer, with a resolution down to 1 minute.
Ok, so I turn on the timer at 7:00am, and turn it off at 7:01am.
The 110vac of that timer, goes into a "delay timer relay" (I think its called).
This has an adjustment knob.
I adjusted this knob via trial-and-error to "send power out" about 58-59 seconds after it starts receiving 110vac.
Would there be a possibility to have this setup with an Arduino?
Have an output for 1, 2 or 3 seconds?
The PepBoys washer pump is for automotive, so it's 12volts.
At the moment, I'm running it with a AC-DC power plug (brick thingy) that I had laying around.
The output of it is 12vdc, at 1.5amps.
The pump runs awesome with that.
Any thoughts on what I can do?
Thank you very much for taking the time to help... very much appreciated!
-- AJ
/
And here's his reply:
What I had in mind was to rig up a circuit around the NE555 which produced a 'high' output when it was powered up, and went 'low' after a few seconds. The NE555 data sheet shows you how to wire it up to do that sort of thing. The output would then go through a transistor (with the obligatory flyback diode) to drive the relay. The relay would connect the 12V supply to the pump. The idea would be that the whole thing was powered by the 12V supply, the timer would switch the supply on, the NE555 would close the relay for a few seconds and then open it, it would then stay open until the timer cut the power off and the NE555 reset.
Any ideas?
Maybe there's an even better way?
Thank you very much for taking the time to help out!
-- AJ
/
Glad to be here!
I would like to build a small timer for a washer pump.
I thought an Arduino board would be best, yet a member of the Arduino forums suggested that it would be simple to use a NE555.
I'm pasting here my original thread, and his replies.
I was wondering if you could give me some general direction as to how to hookup this NE555 to the relays, and the mechanical timer.
I have a small camera looking at the beach.
The wind + salty air gets the front glass of the housing all dirty.
I want to install a "windshield washer kit" from Pep Boys ($14 or so), that has a small tank, pump, tubing and nozzles.
Already did it to one camera, and it works awesome.
Yet my "timing" system is a mess/over-complication.
I want to turn on the washer system three times per day (morning, mid-day, afternoon).
At the moment, I have a digital timer, with a resolution down to 1 minute.
Ok, so I turn on the timer at 7:00am, and turn it off at 7:01am.
The 110vac of that timer, goes into a "delay timer relay" (I think its called).
This has an adjustment knob.
I adjusted this knob via trial-and-error to "send power out" about 58-59 seconds after it starts receiving 110vac.
Would there be a possibility to have this setup with an Arduino?
Have an output for 1, 2 or 3 seconds?
The PepBoys washer pump is for automotive, so it's 12volts.
At the moment, I'm running it with a AC-DC power plug (brick thingy) that I had laying around.
The output of it is 12vdc, at 1.5amps.
The pump runs awesome with that.
Any thoughts on what I can do?
Thank you very much for taking the time to help... very much appreciated!
-- AJ
/
And here's his reply:
What I had in mind was to rig up a circuit around the NE555 which produced a 'high' output when it was powered up, and went 'low' after a few seconds. The NE555 data sheet shows you how to wire it up to do that sort of thing. The output would then go through a transistor (with the obligatory flyback diode) to drive the relay. The relay would connect the 12V supply to the pump. The idea would be that the whole thing was powered by the 12V supply, the timer would switch the supply on, the NE555 would close the relay for a few seconds and then open it, it would then stay open until the timer cut the power off and the NE555 reset.
Any ideas?
Maybe there's an even better way?
Thank you very much for taking the time to help out!
-- AJ
/