This is latest instalment in series.
Possible dosing in a day: 40, 80 and 160ml
http://www.youtube.com/watch?v=GfeAPtJtP_A
Possible dosing in a day: 40, 80 and 160ml
http://www.youtube.com/watch?v=GfeAPtJtP_A
Instead of modifying the doser you could also just dilute your fert mixture. Twice as much water would allow you to keep the 40ml per day but only put in 20ml worth of ferts. Use whatever calculation you need to get the right amount without the hassle of fiddling around with the mechanism.Test device and see how much is in one squirt, mine was about 1ml.
If 40ml a day is too much for you (which is lowest i got) , you can maybe try to lower bottle so moving part wont fully press head and there will be less liquid in one pump action.
Alternatively, when buying bottle , look for one that have thinest piston in pump (spring is inside). The thinner piston, the less should be in one squirt
Tnx man roud:, now im off to do some educated buy :biggrin:Though some of the newer ones have advanced in miniaturization to the point where they resemble unregulated wall warts.
That's the basics. Let me know if you need more specific details on anything.
Yes! My genius has finnaly been recognisedMajstor76, congratulations! Your project has been featured on Hack A Day:
http://hackaday.com/2011/01/21/fertilizing-a-planted-aquarium-using-air-freshener-hardware/
I was going to borrow similar adapter from frend to see if it works, do report your findings. I was trying before with cellular charger of 5-6V and about 400mA but motor wouldnt budge. 600mA seems still kinda low. I dont know whats the safe voltage which circuits can receive without damage but i think if on 6V it doesnt work that it needs more ampsI also picked up a slim push pump soap, and probably the most exciting part of all, I found a Universal AC Adapter which has a voltage selector to emulate a wide range of batteries, from 3 - 12 volts DC / 600mA. I haven't had a chance to play with my supplies yet, but here is a picture of what the AC adapter looks like ... think it will work?
Front
Back
hope that helps!!
Well , theres only one way to find out... In meantime, im testing how long rechargable batteries can hold. Iv set timer to 9 min and will see. If it holds long enough to not be a burden to change the too often then maybe adapters would not be needed at all.The AC adapter i picked up is 3 - 12 volts, so i'll set it at 3 volts to emulate 2 AA batteries. It's also 600 mA, and i can't really change that, but lesser adapters are only 500 mA, so i think my current will be more than fine.
I have never encountered such behaviour and have emptied few cans of spray on it in the past. This device is old few years, maybe new versions of devices have such thing but not old ones?Nice hack , but I have two questions:
1. AFAIK you used built-in airwick time-based (time selectable by a switch) mechanism. This devices have internal squirts counter for "detecting" empty spray, when counter reach programmed limit (is notified by fast led flashing) device stops "pushing" until you press manual release button (it just reset the counter). Did you had any problem with that?
I have tested only with a pump on same level as water, ill do the test with long hose tommorow2. Did you test it only when dispenser is at the same water level in the tank (or a bit above)? I wonder if that will work when device is located below the tank with long "out" hose (about 1.5 meters) to the tank. I guess when fluid will flow slowly backwards (becouse of pump's leak) to the pump between squirts it will be unable get strict doses...