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Resolved Resolved by fxrtst!

Question For Power Supply Requirement

Hey guys, I am looking into how to build a bigger servo actuator at the moment... Its nothing like a full blown project at the moment, I am just trying out different methods to drive a bigger sized robot arm!

So one thing I am looking into is using a DC Motor and encoder to get the thing done! So I found out that finding the right Power Supply is not that easy...

So the motor that I want to use is a the following Tarot 4008 MT 330kv TL2955 Brushless Multicopter Motor 6S 85g TL2955, it can be driven by 6 Lipo batteries, but I would rather use a Power Supply... Any recommendations?:)

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#1   — Edited

I've been using this 24v PSU for testing and also recently added it to my robot bartender:

Mean well

Its only 14 amps, but you prolly can find bigger ones from them. This is only $32 USD

Here is a 40 amp PSU:

https://www.amazon.com/dp/B07MKT88P5/

#2  

Thanks...they are quiet power hungry when working under load, it is super difficult to estimate how much current will be drawn.  I guess testing is the only true option?

I guess I will just have to make sure, it supplys lots of Amps and has constant current limiting, to even get the motors started!!

Hope I will not waste money on an insufficient psup!!

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#3  

I know. I'm looking at some of those numbers at 100% throttle...quite high for a single motor. But I wonder if those are with the rotor on them...that would create drag at full speed. But if you are using for a robot arm static or low motion might be lower. You'll have to test under different load conditions to see.

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#4  

Once you have your motor set up and connected to your PSU, check with a multimeter and see what amps are being pulled under different load situations on your motor.

To check amps using multimeter:

#5   — Edited

Yes, thats probably the only way to get to know how much they will draw...:D

#6  

Just got me that 40A from China...what a beast!!:D

Did you ever work with brushless motors? Because the delivery will take so long I was thinking I could do a test run with another psup.. But that one got only 15V, do you think I can do some testing or will it terribly fail to power the motor?

And did you ever do some testing with an Odrive?

#8  

Those motors are super powerful and can draw a crazy high current when under load!! Lets see if I can get them working for a robotic application...

I will keep my progress posted!!:)