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  • Vmtr commented on ihart's instructable Rideable Segway Clone - Low Cost and Easy Build5 months ago
    Rideable Segway Clone - Low Cost and Easy Build

    I made some progress yesterday. Among other things, I made some changes to the wiring. The way that I originally had the resistors connected on a small breadboard should have worked, but I changed it to look more like the photos. It seems to have made a difference; I rode farther than before without issues. I'm not quite ready to declare victory over the electrons, but things are looking up.I also replaced the vertical PVC with 3/4" iron pipe, so am no longer worried about pushing on the handle too hard.

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  • Vmtr commented on ihart's instructable Rideable Segway Clone - Low Cost and Easy Build5 months ago
    Rideable Segway Clone - Low Cost and Easy Build

    I had ridden it a couple of times just before I posted the photo. That's when I experienced the chatter (on a flat driveway with a 185 pound rider). Still, it worked well enough that I don't want to give up now. I have put it back on blocks to test some things - different motors, heavier wire, etc. The Sabertooth error light does blink when the motors chatter, which seems odd because it happens when the machine is on saw horses - no weight, no hills, good batteries.The twisting of wires is a lesser concern but the motors do occasionally go into high speed without reason. I'm currently checking my wiring against the schematic to try to spot mistakes.

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  • Vmtr commented on ihart's instructable Rideable Segway Clone - Low Cost and Easy Build5 months ago
    Rideable Segway Clone - Low Cost and Easy Build

    Thanks for the response. For the three wires going from the Arduino to the motor controller, which wires are twisted with which? It's a little difficult to follow those wires in the photos because that's also where several wires are exiting the box.I am testing it currently without steering and tilt adjust switches/wires to reduce possible noise locations. I still get chatter or erratic behavior after 30-60 seconds. All cable on the 24V side is 14 or 12 gauge and the batteries are the same as those used for wheelchairs. (After one failed segway attempt, I put the batteries into a lawnmower that I converted to electric and was able to mow for 45 minutes, so I'm sure they have enough charge.)I saw your information about the PVC. I thought I could overcome it by using a different att...

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    Thanks for the response. For the three wires going from the Arduino to the motor controller, which wires are twisted with which? It's a little difficult to follow those wires in the photos because that's also where several wires are exiting the box.I am testing it currently without steering and tilt adjust switches/wires to reduce possible noise locations. I still get chatter or erratic behavior after 30-60 seconds. All cable on the 24V side is 14 or 12 gauge and the batteries are the same as those used for wheelchairs. (After one failed segway attempt, I put the batteries into a lawnmower that I converted to electric and was able to mow for 45 minutes, so I'm sure they have enough charge.)I saw your information about the PVC. I thought I could overcome it by using a different attachment method and by hot-gluing a 1" PVC pipe inside the outer one, but it's definitely weak at the threaded area. I've bought materials to correct it.

    One other bit of information: in a test, the battery voltage read 25.8 volts before starting, then drops to 25.3 when running at moderate speed. In this test, it didn't chatter; instead, it went to full speed after about five minutes. It then dropped to a little under 25 volts. In a previous test, it dropped to about 23.8 when it was chattering.

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  • Vmtr made the instructable Rideable Segway Clone - Low Cost and Easy Build5 months ago
    Rideable Segway Clone - Low Cost and Easy Build

    A photo of my (almost) completed project is attached. I used wheelchair motors/wheels because I had them. Other than that, 22AH batteries, and a larger (2X25) Sabertooth controller, the electrical and electronic portion is the same as in the Instructable.So far, it's only traveled about 4 meters. After running for a few seconds, the wheels start to shake or chatter. I just read in previous comments that the Sabertooth may do that when too much current is being drawn. I have been unable to find the power usage for the motors that I'm using. I'm going to upgrade some of the wiring that I'm unsure of but I know most of it is 14 gauge. I may have to get scooter motors if all else fails.

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  • Vmtr commented on dustnnotes's instructable Upside Up - Robot Balancing Revisited6 months ago
    Upside Up - Robot Balancing Revisited

    The L298A motor driver works well with the 3.3 volts on the Arduino 101?

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  • Vmtr commented on stoppi71's instructable Arduino Segway1 year ago
    Arduino Segway

    I am a little confused about the buttons for steering. Only one button is shown in the complete setup diagram but a second blue wire is there for right turns. Would that wire connect to a second switch in the same way as the left? Also, as the diagram is drawn, it appears that the 5V pin and pin 13 are always connected whether the switch is pressed or not? Is that correct?

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