🎙 [Review] FunSR PRO Sound Test & Review

[nannyskexis]

Thank you!
This fan was installed:

Does the voltage matter?

[Falafel]

Thanks. This is the same fan I received with the unit. Looks like they haven’t changed the batch when building yours.

@nannyskexis

Does the voltage matter?

It’s 5V.

My fan is actually rated 24v, so it may be running at a lower RPM than specified.
@renwoxing Mind confirming these info?

[nannyskexis]

For now I’ll keep using the fan (still would be good to have a recommendation for a different fan by @renwoxing, though), but while reinstalling it, I noticed that one thread was stripped.

Thankfully the fan itself is still sitting firmly, however it would but great to have the STL files available somewhere, as the plastic threads probably won’t last long.

[roa]

Fan really necessary? Counters the silence of the device which is the superpower of it no? Someone hold a heat measuring gun there and running some fast scripts or set a weight that keeps it in acceptable temperatures. Whats the price of a 10cm motor and what can it lift?

[Falafel]

No it’s not necessary for light usage. If you are not going to push the limit of these motor you may be able to just disconnect the fan and leave it.

@roa

Counters the silence of the device which is the superpower of it no?

I have complained about the same thing with them when I initially got the device. The reality is that you can fit a fan of the same dimension that does not make audible noise but still helps with circulation. So the problem isn’t about having a fan but which fan to use.

[roa]

Really hope @Tempest will make one with this new motor but please a small fanless version also, even if small means expensive.

[Tempest]

I

@roa

Really hope @Tempest will make one with this new motor but please a small fanless version also, even if small means expensive.

I’m going to be taking a look at robot joint motors this year. My goal for 2026, now that SSR1 and SSR2 are a reality is SSR6. I have some ideas but I haven’t settled on an architecture yet. The motors used on FunSR PRO make economic sense because they’re the best value for money but they’re way too big and powerful for a six axis device. The smaller motors are more expensive and I doubt anybody wants to spend $1,000 just on motors.

From the testing I’ve done having even just a gentle cooling fan makes a massive difference. Motors naturally create heat and having airflow makes it much easier to get rid of it, which prevents the machine overheating. So for a homebuild device I will always include a fan option from now on. There are quiet fans though.

[randomus]

@Tempest

Motors naturally create heat and having airflow makes it much easier to get rid of it, which prevents the machine overheating.

A little bit of airflow makes a huge difference; I second everything you’ve said and want to add: The motor driver/power electronics are usually the more sensitive components when comparing the thermal masses behind them especially compared with bigger motors.

Looking forward to see what you cook up this year.

[codeScripter]

Thank you for your detailed test. It seems that this is an enhanced version of the OSR2+.

[y89451r]

[Review] FunSR PRO Sound Test & Review

What is this? The FunSR Pro is a custom-built OSR2+ made and sold by FunOSR. It uses joint motors designed for serious robotics instead of hobby servos. It is claimed to be extremely silent all whilst delivering superseding performance. [bannerpic] I have been using this thing for over a month now and finally got some time to do a proper review. In this post you’ll see videos of it running in action as well as noise measurements. Hope this will be informative and addresses some concerns. …

I changed the start up behaviour but I wanted to set it back so the default is the starting point again, is there a way to reset this setting?

[Falafel]

Do whatever command you did to change that, but use DSP2 instead for middle.

@Falafel

• DSP1 - Start at bottom (0% L0)
• DSP2 - Start at middle (50% L0)
• DSP3 - Start at top (100% L0)

[erfrefer]

What do you think after a few more months? Is it holding up?
My Handy is starting to give and I’m looking for a new device but with the Handy 2 Pro + accessories costing the same as the FunSR PRO, it’s either getting another Handy now that it’s half price or finally jumping to this.
My Handy lasted 3 years, I don’t need this to last quite as long but there’s definitely a lot of issues on the discord which I’m not sure if they get resolved as probably they get moved to DMs, but I definitely don’t want a device that I’ll be using and worrying about it falling apart while in use (already had a stressful period with the Handy until I got the right mount…)

[Coeur-Vide]

I’ve had this device for a few months also. Sturdiness is’nt really an Issue with the FunSR pro is pretty big and built like a tank.
Honestly I don’t see anyone having issue with broken parts unless they’re too rough with it while moving it around/setting it up.

I did have a small issue where i slightly stripped a one of the screws that connects the receiver to one of the arms but luckily i got around that issue by just using an allen key that was juuuuust a little bit bigger. The holes where you have to screw things in feel almost too tight but when theyre in there they really dont feel like they’ll come out even when the machine is going crazy so it ain’t exactly a bad thing.