I am using the stepper motors provided as a set from steppers on line. J2 is supplied as a stepper motor and gear box combo. I put the robot together using the manual and the instructions matched the J2 motor/gearbox combo exactly. A few days later (I was waiting for some correct length set screws) I returned to finally fit J2 but the instructions appear to have changed? e.g the instructions I have said that the motor/encoder leads should be exit at the bottom of the assembly but now say exit to the left. The detailed instructions/ pictures explaining how to remove and re-attach the gearbox look different? either the motor/gearbox or both have changed?? Is it me ???

Does the teensy 4.1 need to have the ethernet chip fitted. Amazon (UK) can provide versions with or without the chip fitted. Their lowest price offering doesn't state whether it is with or without but the associated image looks as if the chip is fitted. https://www.amazon.co.uk/Teensy-4-1-Without-Pins/dp/B088D3FWR7/ref=sr_1_3?keywords=teensy+4.1&qid=1675419340&sr=8-3

Hi, I successfully built the AR2 arm (in PLA) a few years ago and am now re-visiting the project with a view to updating to AR3 using most of the AR2 parts. Is it possible to just buy the motors with extended shafts and use them with the existing AR2 gearboxes? Has any one tried adapting the AR2 motors and gearboxes so that encoders can be fitted ? Is there a cheaper alternative to the specified encoders ? Thanks, Keith Emerson