robothut Posted April 13, 2020 Author Share Posted April 13, 2020 Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 Now take two 2 inch long 6-32 screws "or in the land of metric find some thread stock and nuts" and screw them into the back motor mount screw holes. There are holes in the body to pass a screw driver in to do this. These screws will be the mechanical link that moves the arm levers when the body turns. Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 Here you can see the gear motor I used to mechanize the Radar screen effect. It is screwed in place with two 6-32 screws, they will self tap . Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 To make the body twist back and forth when the robot walks you must glue in a body turn linkage part. This part glues to the lower inside front of the body. It will contact the legs as they move forward and make the body turn with each leg stride. BodyTurnLink.stl Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 The arms are glued to the arm linkage levers. The arms should move freely from the body. Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 There is a Head neck lever part that I should have talked about before putting the body on as it is easier to glue in place at that time. The point of the Head Link is to keep the head facing forward even when the body is twisting. This was just something that I thought I would like and not required. The part glues to the back of the motor frame and stick up. It till Key into a slot in the head assembly later. NeckLever1.stl Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 Now print the body top and neck. They are 2 parts that glued together. You could print them as 1 part but then you would have to use supports when printing and that takes more time and plastic and then you have to remove the supports and that takes time and wastes plastic. So I print them as 2 parts and save time and plastic. NeckSmooth.stl ShoulderTop1.stl Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 The head files is here. You can see that I have provided a place for the speaker incase you want to add sound effects. Head5.stl Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 Now print the head Lock trim and Link Lock. The Lock trim will be glued in place to hold the head on to the neck but allow the head to freely turn. The Link Lock will be glued in place next and it is what keys on to the head linkage part we glued to the motor mount, to keep the head facing forward even when the body is turning. Head5LinkLock.stl NeckLockTrim.stl Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 Print the eyes / nose, the mouth and the ears. The ears print in 2 parts and get glued together. You can paint the parts or print them to color before gluing them into the head. The head gets screwed on to the body with two #2 screws on both side of the body. Ear.stl EyeNose.stl Head5Mouth.stl Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 There are two parts to print for the radar unit. The back part is screwed to the gear motor and rotates. It is a single file that I print in two colors. The first 1mm I print in white the raised parts I print in black. The front part gets glued to the body and I print it in to colors as well. The first 1mm I print in black then the top bit I print in silver. LEDs should be placed on the inside back wall of the radar unit for light. RadarBackArt.stl RadarFront3.stl Link to comment Share on other sites More sharing options...
robothut Posted April 13, 2020 Author Share Posted April 13, 2020 A trip in the hut to see the vintage robots that use the linear shuffle walk design. Link to comment Share on other sites More sharing options...
astrogonza Posted April 14, 2020 Share Posted April 14, 2020 wonderful ! Link to comment Share on other sites More sharing options...
robothut Posted April 14, 2020 Author Share Posted April 14, 2020 OK , I think I got into thing-I-verse. so the STL files should be there as well. https://www.thingiverse.com/thing:4284868 Link to comment Share on other sites More sharing options...
6Stelab9 Posted April 14, 2020 Share Posted April 14, 2020 Interesting video. What was the interest in making a dual linkage design as it was more complicated? Is it because tin made robot could use this method? Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now