THE ANNIN ROBOTICS FORUM HAS MOVED TO A NEW COMMUNITY. 👉
Chris Annin
Chris Annin
@chris-annin
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Joined: Jul 8, 2025
Last seen: Oct 6, 2025
Topics: 6 / Replies: 532
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RE: Which one is better for the printer

The choice between NEMA 17 and NEMA 23 depends on your printer’s frame, size, and the level of torque you need. Most consumer 3D printers use NEMA 17 ...

3 months ago
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RE: AR3, Teensy Board

The main issue is that the Teensy 3.5 board is 5v tolerant for the inputs whereas the other boards like the 4 and 4.1 are not - they operate at 3.3v. ...

3 months ago
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RE: what is the software & hardware license of AR2

@robert-hasslen The license for the robot requests that people not build and sell robots for profit or sell robot parts for profit. If you are using t...

3 months ago
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3 months ago
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RE: what is the software & hardware license of AR2

Its a modified BSD license, there is a copy of it in the software download folder. I would love to see people utilizing the robot for use in their bus...

3 months ago
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RE: Teensy sketch to control rc Servos useing the PWMServo library

I don't see why you couldn't do that. I'm not familiar with the PWMServo library but the AR4 motor control algorithm is designed for stepper motors so...

3 months ago
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Replies: 0
Views: 113
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RE: Linear Offset, OFF L

Thank you! I will take a look at add on the next update.

3 months ago
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RE: Shipment to Europ

Im sorry about the import duties I hadnt realized this would be an issue. I will put the value of raw pieces next time to keep this down.

3 months ago
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RE: J2 Stalling and skipping

I suspect this could be a mad connection to one of the motors AABB power wires. If you can email me a video so I can see the behavior and hear any sou...

3 months ago
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RE: J2 Arm.

My aplogies, I overlooked adding the split structural parts. They are listed under the AR3 downloads. I will try to get the AR4 downloads updated when...

3 months ago
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RE: RoboDK with AR4 robot

@mateo-josue-cruz-gallegos This was the last driver I had  AnninAR4Driver.zip

3 months ago
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RE: RoboDK with AR4 robot

I get a number of questions regarding connecting RoboDK to the AR4. During the initial development of the AR4, RoboDK contacted me and they requested ...

3 months ago
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RE: Open-source 3D printed underactuated robotic gripper

That's really slick. keep me posted if you are able to make one, Id love to see pics or video of it.

3 months ago
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RE: J2 arm 3D print version

As far as epoxying them together the bottom piece should be symmetrical. Just make sure that on step #3 on page 41 that the 2 holes are as shown when ...

3 months ago
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