FUNSR PRO: The Most Powerful Stroke Device, Featuring Joint Motors, Is Launched

General
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FUNSR PRO

This is currently the most powerful stroke device on the market, and will remain so for years to come.
FUNSR PRO – FUNOSR

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OSR2 and SR6 use servos as their power units;
FUNSR1, FUNSR1 2.0, and the HANDY2 series use brushless motors as their power units;
This time, however, the power unit used in FUNSR PRO is the next-generation motor—the joint motor currently used in the joints of humanoid robots!

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Reasons to Choose FUNSR PRO

1. Adequate quietness

Compared with servos, joint motors have a smaller reduction ratio, so their noise level is much lower than that of the SR6 series.
Compared with FUNSR1 2.0, it has removed the belt drive mechanism, thus eliminating the noise generated by sliders and belts—resulting in a significantly lower noise level.

Low-speed movement

High-speed movement

Vibratory movement

Twist:

Multi-axis movement（L0,R0,R1,R2）:

2. Supports ultra-long operation time

It has a built-in cooling fan. If you use a load of less than 1kg, overheating will barely occur—no matter how long it runs.
In the test video, during approximately 1.5 hours of high-speed operation, the motor temperature showed almost no change.

If you are a script writer in need of continuous test videos, or if you are a very capable user who can keep using it for an extremely long time each session, this is your best choice.

3. Good stability

High integration level: Compared with SR1 2.0, which requires MT6701 (for position monitoring), Hall sensors (for limit detection), and a motor (for movement), all these components are
integrated into the joint motor itself—greatly improving its stability.

It boasts strong performance, so overheating rarely occurs.

4. It supports a larger load

Currently, it can handle a maximum load of 3kg. (Currently, FUNSR PRO has this capability, but I haven’t yet developed a specific receiver solution. To be honest, I know nothing about its specific design.)
If you have greater load requirements, you can contact customer service—adjustments to the firmware can be made to meet your needs (though a power supply with higher current may need to be purchased).


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Purchase & Shipping

FUNSR PRO Price:
$465 (Shipping Not Included)

FUNSR PRO + Twist Price:
$505 (Shipping Not Included)

Early Bird Benefit: （Purchase Made in October）

  1. VESA Mount Included;

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  2. A $10 coupon
    Coupon Name: Earlybird

Purchase link:

The reason for not listing on AliExpress yet is that we currently need to gauge the base order volume to facilitate motor procurement—motors are really expensive. Additionally, AliExpress imposes penalties and lowers seller ratings if orders are not shipped within 2 days. We plan to list on AliExpress within 3 weeks in the future..

Shipping List:

  • Main Device * 1
  • Twist Module * 1
  • Rotation Cable * 2
  • VESA * 1
  • Power Supply * 1
  • Data Cable * 1
  • Straps
  • Screw Kit + Wrench

The first batch of orders is expected to be shipped within 2 weeks.

10 Likes
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Looks like a massive step forward on capability but it’s also an awful lot of money on something with 15 days warranty. I wouldn’t worry with an OSR2 as you could technically obtain spares and repair yourself but with something this complicated what mechanisms do you have to place for longer term spares/repair availability. I’d imagine shipping it back to China each time anything goes wrong is not going to be an acceptable outcome for most people.

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Questions:
What’s hand radius and how does it compare to OSR2/SR6? (equivalent to L0 distance question)
How much more power is has compared to 25k/60kg osr2/sr6 servos?
How much more long-lived is the motor compared to a servo? (assuming same load)
What helps long-liveness? (like does it have protection from applying max power if it’s trying to move a static object and can this cause overheat)

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The first 15 days are for confirming that the received device has no issues;

Between 15 days and 180 days, if any problems occur under normal use, we will repair them free of charge; if the issues are caused by improper use, such as water damage or drops, we will provide paid repairs;

After 180 days, I will offer paid repairs.

Actually, no matter how long ago you made the purchase, I will also provide after-sales support on Discord.（It’s not that I’m beautifying things on purpose — if you’re in the Discord server, you’ll be able to see for yourself.
）

1 Like
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L0 Stroke: 14cm (similar to OSR2 and SR6, with no significant difference)；

Peak Torque:
Flytek FT5325: 25 kg·cm
Gim6010: 150 kg·cm

But in reality, it doesn’t reach that much power because we’ve implemented some limitations. Under normal circumstances, you can check the video: using 3KG is no problem. If you need additional power, you’ll need a better power supply.

In fact, I believe it won’t overheat during normal use, because I tested it with a 900g load running for 1.5 hours, and the motor temperature barely changed.

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Does this move straight up and down or in a wide circle as it looks like?
Well not really a question it does not go up and down straight.

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The motion trajectory is the same as the OSR2, supporting L0, R0, R1, and R2.

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In a wide circle
Same as OSR2 if you didn’t know that

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No I did not, is that a disadvantage in use as it seems to me?

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From their discord:
4 axis with the twist module (L0,R1,R0,R2)
Data cable length is 2 metres
Twist receiver option comes with 1 strap, open receiver comes with 2
Twist receiver option DOES NOT come with the open/semicircle receiver
Twist receiver option DOES come with the onahole adapter

1 Like
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Dunno ¯\_(ツ)_/¯
It just always was like that
It goes forward by 2cm in the middle

Translation to simple english

“I’m not sure that OSR2 going L0 in arc rather then in line is a disadvantage”
“It was working like that since OSR2 was invented”
“It has 2cm L1 offset for 0/100 L0 and 50 L0”

2 Likes
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The advantage for sure is you have no belt and rails or poles and so its super quiet.

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If it’s the same kinematics as a standard OSR2, then the arm-length is 140mm. If it is operated in the standard range of 2x30°, then the deviation is L x (1-sqrt(3)/2) = 19mm which from experience is not a disadvantage.

@renwoxing : Congratz on developing this robot. Looks promising. I have bought a Joint Motor to play around with a while back, but didn’t have the time to, so it’s nice to see someone realizing one with Joint Motors.

But: Now that you have that much more torque, have you thought about alternative kinematics and movement range? From where I stand, that should be a simple change in the software and simple geometric calculations to avoid collisions.

EDIT: May I ask: Is the twist design still using gears and servo?

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The joint motor can indeed perform many tasks, and I’m gradually exploring its capabilities. The rotation module uses a stepper motor, not a servo, just like the SR1 2.0.

Do you have any suggested scenarios? For example, how it should move.

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Wow finally! Was excited for news about this one from seeing the previews awhile back.

How long are the motors expected to last and difficult would self repair be? Just need to ship the motors from China and some basic electronics knowledge?

I’m in the middle of considering upgrading the 25kg motors in my FUNOSR2+ so this came out at the right time.

It took me some getting used to, but you can mitigate it by sticking to the middle of the stroke range and also tilting your mount upwards if you have that option (that’s what I do) so it’s more of a natural stroke.

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The high level of integration makes repairs simple, unlike the SR1 which requires Hall sensors and MT6701 chips. However, I believe failures are generally unlikely because the design eliminates issues like zero electrical angle and overheating.

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I was mainly suggesting a simple change to allow for a longer stroking range, either by lengthening the arms, because you seem to have more than enough torque, and/or changing the max angle in the software, if there are no mechanical collisions.

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How much does the unit weigh compared to the OSR and SR6?

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Wow this looks amazing, anyone here brought one yet. Got to many toys, 2 keons, handy, ssr1 and 2 SR6. I guess I need to make room for one more.

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i ordered one, like he said gonna be over two weeks for shipment. ill give a review here when i get it.

to be honest im not sure what to expect. but i am hopeful it will add more immersion.

1 Like