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Chris Annin
Chris Annin
@chris-annin
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Joined: Jul 8, 2025
Last seen: Sep 13, 2025
Topics: 6 / Replies: 529
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RE: Teensy Is at 3.3v logic. Stepper controller is at 5v??

The Stepperonline drivers (DM542T and the 320) do operate at 3.3v they are supposed to be updating the manual to show that. I assume you are running D...

1 month ago
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RE: Stepper Control Driver Pins Neg instead of Pos

The drivers I was using in the earlier versions of the AR2 did not work with PNP or common cathode so the original architecture was setup for an open ...

1 month ago
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RE: Base mechanism

The J1 housing contains (2) 32009 taper roller bearings that are opposed, the J1 platform has set screws that set the tension (red arrows) against the...

1 month ago
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RE: Why are the limit switches not set up to use pullup?

The pull-up resistors weren't strong enough to be reliable over a 5 ft ethernet cable, so I opted to do three wires and pull it to ground when the swi...

1 month ago
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RE: Arduino Mega on AR4

Yes you can use the Mega code, I just switched to the nano on the AR4 because it was lower cost, took up less space and has more readily available ter...

1 month ago
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RE: Annin Robotics inscriptions & robot build with CNC-ed plastic parts

@midnightoilburner This is awesome. thanks for sharing!

1 month ago
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RE: Annin Robotics inscriptions & robot build with CNC-ed plastic parts

Wow, that looks awesome. <correction the font was "Latin">. Please feel free to share any stl or cam files here on the forum or let me know what...

1 month ago
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RE: Ordering Individual Parts from the Aluminum Parts Kit

Hello, just replied to your email, I do have some stock on those right now. Thank you.

1 month ago
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RE: J4 is the only joint that moves (AR3) Teensy 4.1

@dan I'm glad its resolved. You're not the first, I to have spent countless hours (and beer) trying to solve problems due to issues I assumed to be in...

1 month ago
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RE: J4 is the only joint that moves (AR3) Teensy 4.1

@dan when you said "12v/5v power supply for the teensy (5v)" are you using an external power supply for the teensy? I have never powered it from an e...

1 month ago
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RE: J4 is the only joint that moves (AR3) Teensy 4.1

Ok, that's typically the first thing I look at when only the DM320 drive is working. Did you have this robot operational previously with the AR3 softw...

1 month ago
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RE: J4 is the only joint that moves (AR3) Teensy 4.1

have you set the DM542 driver input level from 24v to 5v ?  J4-is-the-only-joint-that-moves-AR3-Teensy-4.1-.avif

1 month ago
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RE: AR3 Build with Teensy 4.1?

i assume the drives amp settings are correct? also double check the A+A-B+B- wiring to the motor.

1 month ago
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RE: AR3 Build with Teensy 4.1?

I think you can use the 4.1 with some minor changes. I will be working on a document and teensy sketch to update the AR3 to use the AR4 software this ...

1 month ago
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RE: J4 turret housing and needle roller bearing assemblying is very loos

It would appear the bearing cage is was not manufactured correctly. Please email me at info@anninrobotics.com and I'll make sure to get you a replacem...

1 month ago
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