Hi Joseph, My build is using the CUI AMT21 "multi-turn absolute" encoders which communicate over RS485 network. Despite their name, these encode...
Is there an encoder wiring change due to the teensy 4.1 being non 5V tolerant? Or does the breakout board have that protection built in?
Back when I did my AR3 build, all of the parts of the stepper kit were also available individually (and it was $25 cheaper to buy them individually). ...
a few recent updates... I was having a problem with J5 accuracy due to deflection of the lead screw guide rods. In an attempt to improve this I ...
Now that the weather is getting cold, it's time to get back in the shop and work on the AR3. Recent updates include reworking the spline logic to use ...
Just for fun I ran the same spline profile as the last video but much slower and added a 4 mm elliptical weave, as if it was running a mig welder. It ...
My robot arm has been dormant for a few months but recently revived to test some new spline interpolation programming. I wanted a way to smoothly navi...
I tweaked some of the core motion profile logic without proper testing and the J4 encoder paid the ultimate price. On the bright side, I did manage to...
The reverse kinematics on my robot seem to have a hiccup when moving across X=0.0 during a linear move. When solving for J1 angle, I think it should b...
@erik Hello Erik, The multiturn absolute encoders from CUI, such as the AMT212D that I used, have one serious fatal flaw, they aren't really mu...
Over the weekend I managed to get 5 of the 6 encoders wired and communicating. Just a little more wiring time and if all looks well I can begin the pr...
@erik I have the 6 absolute encoders installed but not wired yet. I hope to get that going this coming weekend. Once that is operational I can test th...
Well, I'm committed now. All encoder and home switch wiring has been removed. Also finished the J3 sprocket ratio change.
I've now added a second RS485 multi-turn encoder and can read both at over 1000 Hz so 4 more have been ordered to complete the project. The wiring on ...
It took awhile but I now have one multi turn encoder communicating on an rs485 bus with a spare teensy 4.0 I had handy. The encoders are half duplex s...
