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Yifei Cheng
Yifei Cheng
@ycheng517
Eminent Member
Joined: Jul 8, 2025
Last seen: Aug 16, 2025
Topics: 6 / Replies: 12
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RE: Is my J2 encoder busted?

@angus-muffatti I directly wired the encoder cables to the teensy board, bypassing the mess of wires and connectors in between for the standard wirin...

2 months ago
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RE: Is my J2 encoder busted?

the encoder was broken and after getting a replacement, things are working again. I think I applied too much pressure to it while assembling the robot

2 months ago
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Replies: 5
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Replies: 1
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RE: HK1612 bearing stuck on J5 Bearing Post

@chris-annin I got both parts from the kit. I was able to remove the bearing from the post by adding WD-40 between the two parts and then rotating whi...

2 months ago
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Replies: 3
Views: 111
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RE: ROS 2 Driver for AR4 Now Available

@dipin don't use the main branch on humble, it won't work even if you get past this build problem. Investigate and fix your limit switches like what A...

2 months ago
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RE: ROS 2 Driver for AR4 Now Available

@duanemclemore It should work with moderate effort. You just need to figure out the differences between AR3 and AR4, and update configs in both the Te...

2 months ago
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RE: ROS 2 Driver for AR4 Now Available

@evan-wassmann hey I'm not sure why that's not being updated but another way of tackling the problem is to reduce the max_velocity of those joints in ...

2 months ago
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RE: ROS 2 Driver for AR4 Now Available

For posterity, the calibration routine has been updated and now the validation routine should work no matter the camera angle

2 months ago
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RE: ROS 2 Driver for AR4 Now Available

@philippe see: for calibration accuracy tips

2 months ago
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RE: ROS 2 Driver for AR4 Now Available

Update: AR4 servo gripper control has been added!

2 months ago
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RE: ROS 2 Driver for AR4 Now Available

@Jacob it would be great if you can test it!

2 months ago
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RE: ROS 2 Driver for AR4 Now Available

Yes it should work on the raspberry pi, you'll have to install Ubuntu for Raspberry Pi. I'm not supporting the nano/gripper yet but will be working on...

2 months ago
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