Electronics > Beginners
water pump
rookie:
Hello!
I am currently using a peristaltic water pump for my project from adafruit : https://www.adafruit.com/product/1150.
This pump is too slow (low flow rate) for my needs so I am looking for a different one (about 1 litre/minute) with PWM capability. I am pumping water from a bucket into another. I am looking at PWM controlled pumps and the ones I can find online are the computer cooling pumps, such as EK-D5 PWM G2 pump: https://www.ekwb.com/shop/ek-d5-pwm-motor-12v-dc-pwm-pump-motor
It is rated at 1500 litre/hour, so on paper it does seem to fit my requirement. It is quite expensive though, so I would like to know if it is suitable for my project or I can use any other pump with PWM capability?
Brumby:
First - check your maths.
1 litre/min is 60 litres/hr, so 1500 litres/hr seems somewhat of an overkill... by a factor of 25.
The price is a reflection (in part) of the market it is targeted towards - gamers. It will also be built for reliability over extended periods of operation. Gamers tend to lose track of time.
Unfortunately, I don't really know where to point you.
Brumby:
EBay perhaps?
https://www.ebay.com/itm/192468971286
IanB:
There are going to be lots of options. Look around for low voltage (12 V DC) aquarium pumps, fountain pumps, anything like that. You will find options from $10 and up. Just do a web search and sort through the search results. If it's 12 V DC it will be PWM controllable.
drussell:
--- Quote from: IanB on September 18, 2018, 12:38:47 am ---There are going to be lots of options. Look around for low voltage (12 V DC) aquarium pumps, fountain pumps, anything like that. You will find options from $10 and up. Just do a web search and sort through the search results. If it's 12 V DC it will be PWM controllable.
--- End quote ---
Anything is PWM controllable if you want to build the power electronics to control it but I believe the OP is looking for something that responds to a PWM control signal that can easily be controlled at the logic level and does its own speed variation in the motor's internal controller, like a PWM controlled 4-pin PC fan.
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