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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: ARCS Software Screen Issue

Hi Joe, what is your display size set at? If its currently at 125% can you try 100% and let me know if that fixes the issue?  ARCS-Software-Scr...

1 month ago
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RE: Properly wiring the Teensy - the 5VDC connector mystery

Hello all, Im sorry I missed this post. Raymond Kimber brought this to my attention and he may have some additional info to add to this topic. Please ...

1 month ago
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RE: J5 calibration - not working

It looks like the J5 limit switch is likely returning +5v when it shouldnt. I would check pin 30 on the teensy board and make sure you are seeing -5v ...

1 month ago
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RE: Regarding set screws

Yes just a light tension after they touch the bearings, you should not feel any play or side to side movement in the axis.

1 month ago
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RE: Can i go beyond 100% in robot speed entry field ?

Its possible but you could get undesired behavior or missing steps.

1 month ago
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RE: How did you calculate the final payload for AR3 Robot i.e., 4.15 lbs (1.9 Kg) ? Could you please elaborate ?

Hello, sorry for the late reply - I missed this question. When designing the robot I tested several off the shelf motors and gear ratio combinations s...

1 month ago
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RE: I placed an order for the AR3 kits to the tune of $880 a week ago! I have heard nothing back from Chris. Is he sick, Covid.....? Anybody ?

Following up on this forum post - the order was placed by another individual from Florida Tech and the package was delivered on August 23rd.

1 month ago
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RE: I placed an order for the AR3 kits to the tune of $880 a week ago! I have heard nothing back from Chris. Is he sick, Covid.....? Anybody ?

OK, email me with the name used to place the order as well as the order number and I will get you the tracking information.

1 month ago
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RE: I placed an order for the AR3 kits to the tune of $880 a week ago! I have heard nothing back from Chris. Is he sick, Covid.....? Anybody ?

Hello, I don't have any emails from caraway78@yahoo.com and I dont show any orders placed from your account. Is it possible you placed an order from a...

1 month ago
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RE: AR3 - J1 and J5 CALIBRATION NOT WORKING

I think the input for the J1 limit switch is getting 5v when its not made. I would use a meter and double check that the switch is returning -5 when n...

1 month ago
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RE: Use another AB rotary encoder?

Yes you can use a different encoder. I would want to test it to be sure. You would need to change the encoder mult value in the teensy sketch to match...

1 month ago
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RE: Can i use Teensy ver 4.1

If you wanted to go with another type of switch it needs to provide a 3.3v input to the teensy board (5v is using the 3.5 board)

1 month ago
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RE: Can i use Teensy ver 4.1

The reason I used the 3.5 is because the pins are 5v tolerant. The encoders need 5v to power them but there output is low so thats not an issue as muc...

1 month ago
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RE: Buy 3D printed parts for AR3 Robotic arm?

Glad to hear it. Make sure to print out the AR3 model So you get the latest model. (It’s clean and sleek) If you get stuck, reach out.

1 month ago
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RE: Anybody else’s J2 joint messing up?

With the J2 motor removed is the arm locked up? Is there any clearance issues with the J2 tension plate? I have had people have issues with the J2 pla...

1 month ago
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