Angel LM

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Viewing 15 posts - 211 through 225 (of 272 total)
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  • in reply to: Thor Controll PCB #835
    Angel LM
    Admin

      Hi Benedict,

      Please take a look at the Component List at the Wiki page.

      Best regards,
      Ángel LM

      in reply to: introduce myself #1099
      Angel LM
      Admin

        Hi Christophe!

        Welcome to Thor community! Currently I have no time to do my own projects… so I can’t take them from other people either… I hope you find a solution soon!

        Best regards,
        Ángel LM

        in reply to: Regarding GRBL #1141
        Angel LM
        Admin

          Hi Burcu!

          I’m happy to know that the motors are working now, what was the problem?

          Regarding the home position question, do you have any position sensor in your Thor? In my case (the current design in my repository), Thor has 5 sensors (on the 5 first articulations) to set the home position when the board is connected (or the $h command is sent).

          If yours have not sensors this would the sequence:

          • When the Arduino Mega is connected to the PC it assumes that the current position is the home position (A=0º, B=0º, C=0º… and so on)
          • When the connection is established between the Arduino Mega and the GCode sender program, the current position is set as home position (A=0º, B=0º, C=0º… and so on) <- This happens everytime you close and open the serial connection
          • When the connection is established and you send a GCode the motors will move considering the home position.

          If it has sensors this would the sequence:

          • When the
            Arduino Mega is connected to the PC the robot will start the home sequence, moving its articulations until them reach the home position (A=0º, B=0º, C=0º… and so on)
          • When the
            connection is established between the Arduino Mega and the GCode sender
            program, the robot will start the home sequence, moving its articulations until
            them reach the home position (A=0º, B=0º, C=0º… and so on) <- This happens everytime you close and open the
            serial connection
          • When the connection is established and you send a GCode the motors will move considering the home position.

          In both cases, sending a single command should work…

          Can you share the GCode you are trying to send? I’ll try to replicate the issue.

          Just in case, there are a GCode command that switches between Absolute Positioning and Relative Positioning that may be the cause of that problem.

          in reply to: Introduction #1143
          Angel LM
          Admin

            Hi Thalles!

            Welcome to this community!
            Regarding your questions:

            I – What are the parameters of the step motors that you recommend for this project?

            Do you mean the hardware specifications or the firmware configuration? If you are looking for the hardware specs, you can look at the Stepper Motors section in the Component List & Where to buy page at Thor’s wiki. If you are looking for the firmware configuration, you can check the GRBL source code.

            II- I saw on some posts that people bought the PCBs from you. Are you still selling them? How much do they cost?

            I still have a few ControlPCBs (just the PCB without the components) available, price is 10€ + shipping cost. At this moment I’m not selling either kits nor assembled boards

            III- Could you please provide a list with all the recommended components to buy for this project please?

            I think that you are looking for the Component List & Where to buy page at Thor’s wiki 😉

            Hope it helps!
            Ángel L.M.

            in reply to: Controlling the Thor Arm #1147
            Angel LM
            Admin

              Hi Adam!

              In my case, I’m currently generating the gcode by hand. As I’m controlling the position using forward kinematics it’s pretty easy to write them in the text editor and save it as “.gcode”.
              In my endless To-Do-List there is a point dedicated to develop a simple program to control it in real time using Inverse Kinematics and another one to generate a gcode after entering the desired coordinates and times.

              As far as I know Smoothieboard allows to create a Robot profile and it is powerful enough to do the IK calculations, keep me informed if you use the Smothieboard and make that profile!

              Best regards,
              Angel LM

              in reply to: [Introduction] Kathrin Nuelle #1077
              Angel LM
              Admin

                Hi Kathrin,

                First of all, welcome to the family! I added you to the List of Thor Builders

                As I said on previous occasions, I can’t be happier seeing that Thor is being used in schools and universities 🙂
                I hope that you and your students like the project as much as I like it!

                Do not hesitate on asking if you need some help!

                I’ll be looking forward to see updates of your project soon 😉
                Angel LM

                in reply to: Sensor PCB #1153
                Angel LM
                Admin

                  Hi Adam!

                  I just updated the Sensor PCB component list at the Thor’s wiki. The model of this optocoupler (or “photo interrupter”, which I think it’s the correct name) is ITR9608.

                  Hope it helps!

                  in reply to: Availability of PCB control board and Opto Sensor boards. #1101
                  Angel LM
                  Admin

                    Hi Martin,

                    I only have 1 PCB left. I can send you the PCB + Mats for 30€+Shipping cost
                    At this time I can’t offer the assembled and tested one as I don’t have enough time for it.

                    The mats include:

                    • PCB
                    • All male pins
                    • All female pins
                    • All resistors
                    • All leds
                    • All capacitors
                    • All terminal blocks
                    • The diode
                    • The fuse

                    And it does not include:

                    • Arduino Mega
                    • Drivers
                    • Wires
                    • Motors
                    • Fans
                    • Sensors

                    Best regards,

                    Ángel LM

                    in reply to: Sensor PCB #1149
                    Angel LM
                    Admin

                      Hi Adam!

                      This is the kind of optocouplers i’m using. I’m not sure about the model, but I’ll check it and update the buying list ASAP adding the proper links 😉

                      Best regards,
                      Ángel

                      in reply to: Regarding GRBL #1137
                      Angel LM
                      Admin
                        Hmmm… That’s strange

                        What kind of drivers are you using? A4988? I’m thinking that could be a driver issue. Are they well tuned?

                        Try to replace the driver of the 5th motor (“X axis”) for the one of the 1st motor (“A axis”) and try again the previous gcodes.

                        Let’s see if the A motor moves!
                        in reply to: Regarding GRBL #1131
                        Angel LM
                        Admin

                          I missed an important thing, related to GRBL, the $$ parameters should be configured.

                          Here are my current settings. You can check what these parameters mean in this post of the original GRBL wiki.

                          Hope it helps!

                          in reply to: Regarding GRBL #1129
                          Angel LM
                          Admin

                            Let’s try it without the test.gcode that I’m not sure that works hahaha

                            If you send a gcode like this one:

                            G0 A10 B10 C10 D10 X10 Y10 Z10

                            All the motors move together? Everyone moves?

                            The following gcode should move the motors to the initial position

                            G0 A0 B0 C0 D0 X0 Y0 Z0

                            in reply to: Introduction and Detailed Progress #1155
                            Angel LM
                            Admin

                              Hi Burcu!

                              First of all, welcome to the Thor family officialy!
                              I really like the purpose of your Thor, it’s the same reason I created and shared it 🙂 Feel free to ask!

                              I’m looking to the photos attached to your post and I have a pair of suggestions:

                              1. The power wire is a bit thin, it will limit the amount of current to the board. I would change it for a thicker one.
                              2. I’m seeing that you short-circuited the switch connector, what can be done, but that thin wire will limit a lot the current given to the board. I would change it for a thicker one (the same thickness as the power wire).

                              I’m using Ø0.5mm (cooper section) wires if it helps!

                              About the missing Art2Pulley piece… I don’t know what piece is that one. I’m looking to your printed pieces photo and I’m only missing the Art1GearMotor, Art4 MotorFix, Art4BearingPlug and the Art56Interface.

                              I’m sure you already know it but you got all the updates STL files at the stl folder at Thor’s github repo

                              Hope it helps!

                              Angel LM

                              in reply to: Regarding GRBL #1125
                              Angel LM
                              Admin

                                Hi Burcu,

                                I don’t get your problem 🙁
                                Have you connected the motors following this diagram?
                                Are you using the Universal GCode Sender?
                                The “Active State” is not “Alarm” (highlighted in red) right?

                                By the way, I’m not sure that the Test.gcode works, I’ll check it ASAP

                                Let’s find out the issue 😛

                                in reply to: Regarding GRBL #1121
                                Angel LM
                                Admin

                                  Hi Burcu!

                                  I wrote this new page (GRBL & Gcode Control) at Thor’s wiki where is explained how to use the Gcodes to control the Thor motors!
                                  Do not hesitate on asking if you have more questions! 😉

                                  Angel LM

                                Viewing 15 posts - 211 through 225 (of 272 total)