SSR1 Beta - A much needed update!

(TL;DR - I’m re-designing SSR1 to be super-simple to build, maintain and customise!)

Hi Guys,

The Silent Stroker Robot, 1-axis (SSR1) has been around in its Alpha form since the beginning of 2023. It’s actually the fourth machine I have released, after OSR3, OSR2, and SR6. As the “1” in its name implies it is a single axis device, which makes it different to my multi axis machines, but the fact that it is based on a brushless motor instead of servos also makes it very quiet, which has been a very popular feature.

Over the first half of 2023, working on SSR1 Alpha I was able to refine this device into a stroker that offered superior performance to any commercial offering on the market. Faster, quieter, and with a longer stroke length than the likes of The Handy, Fleshlight Launch, Kiiroo Keon, etc. It’s also capable of things that other strokers are unable to do, such as very slow movement and smooth acceleration.


(Left: SSR1 Alpha, Right: SSR1 Beta)

SSR1 Alpha’s biggest weakness is in the name: that it’s an Alpha design. It is built around a mechanism that is in itself basically a research test bed. I was using it to learn how to design and build brushless motor mechanisms. This means that whilst the mechanism has proven quite popular the device I designed around it has not. It’s complex, bulky, not easy to mount, and otherwise flawed in a number of ways.

I have learned a lot about how to build these mechanisms now though and so I feel that the time is right to turn my attention back to SSR1 and to release a Beta design. My objective is to drastically simplify the device. I want to make this device to be as easy to build and use as possible.


(SSR1 Beta)


(Inside SSR1 Beta - using off-the-shelf electronic parts)

On the mechanical side I have been able to take the original design and refine it down to just 6 main 3D printed parts. Not only does this make assembly much easier, but it also makes the device feel a lot more solid. I also intend to include receiver options for both FeelStroker, and strap-on sleeves like the one that comes with The Handy.

The original SSR1 required quite a bit of wiring, and this is something else I want to simplify. On the electronic side I have been working with a member of my community to create an integrated circuit board. This is exciting because it will mean that for the basic device the only wiring required will be to plug in the motor! It will be possible to order the board from a PCB prototyping service, and I’m hoping that some of our community sellers will also take it upon themselves to stock it.


(SSR1 Beta with custom PCB - coming soon!)

The current device is designed to be attached to a fixed mount (VESA 100, VESA 75) via hardpoints in the back of the casing. The mechanism is modular and I do have plans for an ergonomic hand-held case variant in the future. There’s currently a FeelStroker receiver, and a Handy-style receiver releasing shorty.

This is an ongoing project. The initial STLs are already available via my Patreon or SubscribeStar. There are not yet detailed build plans for Beta, though I will be getting these completed and released in the new year. Likewise the custom PCB. As with all of my devices this will be a journey of steady improvement.

I want SSR1 to become a bread and butter device amongst home builders, next to OSR2. It’s a device with superior performance to The Handy that can also be built, customised, maintained, and repaired by any user, and at less cost than any commercial device. As a TCode device it can also be used by the user at any time, online or offline for whatever the user wants to use it for.

I am privileged to be supported by you guys, so a big thankyou to all of my patrons and subscribers. You make this possible!

21 Likes

Is the beltdrive less noisy than the handy?

Yes this device is quieter than The Handy. This is mostly because of the motor actually. The motor only needs to make two revolutions per stroke. On the Handy the motor has to make 28 revolutions for a stroke.

The belt itself is probably the loudest part of the device, but it’s very quiet.

2 Likes

Reaching out via DM. Happy to stock and distribute.

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This makes it really easy to assemble.
How far are you with the rotation piece for the SSR1? Any plans for a lubing mechanism?

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The SSR1PCB supports user Input/Output ports that allow extension.
Driving a brushed motor for a pump will require external hardware. Servos should be no problem, the ESP supports PWM output on many of it’s pins.

Integrating a brushed motor controller isn’t on my roadmap at this time, but can be driven with some external hardware. So at least that part should be slightly future-resistant!

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Time for an update on SSR1 Beta.

As of 1st March 2025 the full step-by-step build instructions are live on my Patreon and SubscribeStar pages. This is to go with the complete set of STLs, which are already live and available there.

This first iteration of the build instructions is 43 pages long and includes complete step-by-step instructions with pictures that detail the assembly process for the SSR1 Beta. I’ve basically replicated the detail and clarity that I used for the OSR2 and SR6 assembly documents for the SSR1.

There are now two versions of SSR1: SSR1-A and SSR1-B. The “A” version uses off-the-shelf part electronics like SSR1 Alpha. SSR1-B (for “Board”) uses the new SSR1 PCB, which massively simplifies the electronics assembly process (As in hook up the motor… and you’re done!).

The mechanism is common to both designs. The document takes you through the mechanism assembly and assembly for both sets of electronics.


SSR1-A cover (left), SSR1-B mechanism with PCB and cover (right)

As with all of my designs I am constantly making improvements, thanks to the support of my patrons. I recently added a cooling fan option to the design, for example. Expect further improvements and refinements to the design and the assembly document in the coming months.

5 Likes

Thanks Tempest, how far are you with the twist module? That’s the upgrade many are waiting for.

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I have a question how do you attach vesa mount to ssr1 i dont see any holes

The VESA mount - I’ve done 100mm and 75mm versions - is attached to the back in a place of your choice. I also have plans for other attachments in future, such as maybe a desk clamp.

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I just received my SSR1 Beta and I’m having trouble getting it to work. I’m trying to use MFP like I would for my SR6, its connects, but doesn’t do anything when attempting to play a script. Definitely need some help with this

try restarting it and mfp for me it worked when script was playing ssr1 was connected but there was no movement

yeah no matter how many times I unplug it or restart mfp it never wants to work, when I give it power, the light inside is orange if thats potentially abnormal

It should be green does your pc detecting that this pcb is connected