I have all the parts for the AR3 so I'm committed to finishing it but I just found out about this one.
https://github.com/Seeed-Projects/reBot-DevArm
How does it compare to the AR3 or AR4?

I have the AR4 MK1 and saw the Gcode option and was excited to try it out. I installed 6.4 hmi and 6.4 on the teensy, even 3d printed a marker holder! But no matter what I try I'm unable to get the g-code to convert & upload to SD. I tried uploading a simple square and a complex image and every time it stays on "gcode conversion running" and stays stuck on "Current Row:2"

The robot is running fine, a bit fast but I am able to calibrate with out issues. Any pointers would be greatly appreciated.

Hey all, I'm close to finishing my very own AR4 Mk3. The 688Z bearing I received has an ID of 0.312", and the J5 screw has an OD of 0.317" (the entire shaft, not just a flared end). Does anyone know if I buy a random new 688Z on amazon is it likely that one might be large enough to fit on the screw?

Purchased the MK3 stepper motor kit a while back to get ahead of the tariffs, just now getting back into it and I see the MK4 is out -- can I purchase the MK4 combo kit for use with the MK3 stepper motors or is there an incompatibility there?

With the sensor limiting the current can the gripper now hold an object indefinitely or is there still a time limit? Going to try to add this to my MK3.

Is calibrating not correct?

Axle 5 is doing to 45 degrees not 90 ? Help?

Programs saved in _internal if i open from root directory.

The File is not refreshed until reload.

please check

regards

Guenter

Hello,

For example, I want to make various handicrafts with a NEMA17 stepper motor and am looking for a suitable driver. However, I'm not very clear on the current and voltage information.

In the sales materials from large distributors, I found that the motor's voltage range is 3 to 12 volts, and the current range is 0.3 to 2.5 amps. As for drivers, there's a wide variety, from small drivers like the common DRV8825 (https://www.oyostepper.com/goods-887-5PCSPack-DRV8825-Stepper-Driver-Module-with-Heat-Sink-for-3d-Printer-Reprap.html) to large modules with multiple outputs.

Some motor manuals state a voltage of 3 volts and a current of 2.5 amps, requiring a 12-volt power supply and paired with a DRV8825 driver. This seems unreasonable, doesn't it? Of course, it's possible to control a high-performance motor with a "small" chip using PWM technology. So I still don't understand how to interpret this motor information.

The supplier means that if the motor voltage is 3 volts, then the driver voltage should also be set to 3 volts. Or, does 3 volts refer to the actual operating voltage of the motor? During testing, when I energize one of the motor windings, it draws more than 2 amps of current at 3V DC.

It seems I can't connect it to a 12V driver? The same motor is also mounted on my Mega development board. This stepper motor issue is still a bit of a mystery to me.

Besides factors like size, power, and torque, what should I be aware of now? I just want to do some simple testing with an Arduino and some common small drivers.

C:\Users\gv\Desktop\AR4_teensy41_sketch_v6.4\AR4_teensy41_sketch_v6.4.ino:76:10: fatal error: limits: No such file or directory
#include
^~~~
compilation terminated.
exit status 1

Compilation error: limits: No such file or directory

what iam doing wrong?

regards

AR4-MK3 HMI interface 6.4 interface custom settings are not saved. What has changed in 6.4?