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I am using a timer from HydroFarm  (TM01015) to control my Pond & Media Bed pumps.

Specs - 125VAC 60Hz 15 Amp 1725W Tungston & Resistive Loads 1/2 HP (Indoors)(E218111?)

This timer controls two outlets and can be programmed to turn on or off a maximum of 8 times for every 24 hour period.

My Flood & Drain Media Bed fills in approximately 5 Min. and empties in about the same. I would like to be able to control in 6 minute segments, or 6 Minutes on 18 Minutes off.

I am also interested in controls which would allow me to adjust my flood duration based on Temperature and Humidity levels.

I am interested in the use of Micro-Controlers as well.

2012-09-16 Continuing - I was dissatisfied with the limitation to 8 control times so I went native.

I connected 3 timers (see above) with the outputs in parallel (caution do not cross the wiring) and programmed the timers to each control an 8 hour period with the result being that I can now control 24 events per day which allows me to split each hour for any fraction of that hour. Its not as neat as I would like but I got er done with less than $60.00 out of pocket. I used one of the spare outlets for a night light which I can tell at a glance if the pump has power or not.

This timer also allows each hour to be separately programmed for numerous combinations of days of the week.

M

TU

W

Th

Fr

Sa

Su

M,Tu,W,Th,Fr,Sa,Su

M,Tu,W,Th,Fr,

Sa,Su

M,T,W,Th,F,Sa

M,W,F

Tu,Th,Sa

M,Tu,W

Th,F,Sa

Note Timers are rated indoor only so I will have to get a NEMA box for protection.

A caveat - Tying the outputs together is not SOP to say the least. I was very careful to make sure two timers did not turn on at the same time, so I did not test in that regard. I did not open the boxes so I don't know what might feed back through the timers in that event.

I have a better arrangement but need to make a couple of parts first.

See attachment photos

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Bob Campbell said:

http://community.theaquaponicsource.com/forum/topics/timer?commentI...

You might like this discussion.

Thanks Bob  I think I found what I need a 50 sec repeat timer

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