robothut Posted February 11, 2018 Share Posted February 11, 2018 So I thought it would be fun to make a Zathura type robot. As it turned out the micro servos I used are under powered for the size of the robot,but since the looks were more important to me than function "never thought I would say those words" I decided to go with it. Before I go in to the build details here is a link for the robot in action. Link to comment Share on other sites More sharing options...
robothut Posted February 11, 2018 Author Share Posted February 11, 2018 In much the same way I did the Walking Talking Joel robot project before I used the same basic design here. I wanted the small hip section so had to use the micro servos. They only produce about 21 oz of torque and for comaprision a cheep standard size servo has 64 oz of torque, a expencive standard size servo will have 125 oz of torque ! Oh well I was after a look.Starting with the the foot design to hold 2 AA batteries in each foot and the anke servo. The ratchet wheels and ratchet arms and O rings for wheel grip. Link to comment Share on other sites More sharing options...
robothut Posted February 11, 2018 Author Share Posted February 11, 2018 Next I designed the legs. They have to connect to the ankle servo's and hip servo's and be able to pass the servo wires and battery power wires up to the hip section. Link to comment Share on other sites More sharing options...
robothut Posted February 11, 2018 Author Share Posted February 11, 2018 I designed the hip to hold the two servo's and be able to past the wiring on threw to the Waist servo joint. Link to comment Share on other sites More sharing options...
robothut Posted February 11, 2018 Author Share Posted February 11, 2018 The arms were designed as on part but since I do not like using supports I decided to cut them up so the parts could print with out supports. It is so much faster to glue things back together . the arms will be held on to the shoulder servo's with magnets as I normally do. The shoulder servo's have mounting plates and one has a mount for the POLOLU controller as well. Link to comment Share on other sites More sharing options...
robothut Posted February 11, 2018 Author Share Posted February 11, 2018 The leg is secured to the ankle with glue but the servo must be centered first with a digital servo tester and a square used to adjust to vertically. You can see the waist servo horn mount and servo mount plate with the wires passing threw. Link to comment Share on other sites More sharing options...
robothut Posted February 11, 2018 Author Share Posted February 11, 2018 view of the foot bottom with batteries installed. The magnetic arm system let me mount the Pololu so that the USB port can be hidden by the arm yet easy to get too. I designed a simple stand to hold the robot upright when not powered ON. Standard RC servos do not lock there position when powered down so the robot would not stand well on its own when on display. Link to comment Share on other sites More sharing options...
robothut Posted February 11, 2018 Author Share Posted February 11, 2018 Some shots of the robot complete. Link to comment Share on other sites More sharing options...
kennetzel Posted February 11, 2018 Share Posted February 11, 2018 Wow. VERY impressive. Link to comment Share on other sites More sharing options...
Martian Gil Posted February 11, 2018 Share Posted February 11, 2018 Amazing John! Link to comment Share on other sites More sharing options...
Ranger Posted February 11, 2018 Share Posted February 11, 2018 Great work John! 👍🤖😀 Link to comment Share on other sites More sharing options...
Brian.. Posted February 11, 2018 Share Posted February 11, 2018 That's a most impressive build, John. You keep raising the bar. Link to comment Share on other sites More sharing options...
Roboto Posted February 11, 2018 Share Posted February 11, 2018 What a great working and looking Zathura robot!! Perhaps one day we will see a Fantastic Robby done with you new printer. Link to comment Share on other sites More sharing options...
Andyman Posted February 12, 2018 Share Posted February 12, 2018 Great movement, John. Link to comment Share on other sites More sharing options...
Tinplate6 Posted February 12, 2018 Share Posted February 12, 2018 A very cool robot! So, the big question is...will this be a line of toys for purchase, or just a one-off? Link to comment Share on other sites More sharing options...
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