Peter Wallers Robot Ramblings
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- peterwaller
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- Joined: Fri Feb 15, 2002 12:00 am
- Location: Aylesbury Bucks
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Re: Peter Wallers Robot Ramblings
Just completed a rebuild of Dominant as the cluster took a beating from Nom Nom Nom.
Although the armour held out just taking a few gouges one track was damaged and the old ABS chassis split.
Here is the new one in nylon.
Although the armour held out just taking a few gouges one track was damaged and the old ABS chassis split.
Here is the new one in nylon.
- peterwaller
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- Joined: Fri Feb 15, 2002 12:00 am
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Re: Peter Wallers Robot Ramblings
Alsoran the other part of the cluster was just about written off by Alex so as the rebuild of Dominant had saved a few grams I went for a bigger and hopefully more effective design which comes in at just under 28 gms.
Here it is next to Dominant for size comparison and to show the matching colour scheme.
Its a bit quick for me but then I don't have to drive it.
Here it is next to Dominant for size comparison and to show the matching colour scheme.
Its a bit quick for me but then I don't have to drive it.
- peterwaller
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- Joined: Fri Feb 15, 2002 12:00 am
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Re: Peter Wallers Robot Ramblings
I am doing a demo / robot drive type event at Princes Risbough Library on the Wednesday 30th August so I have just been tarting up my practice arena and repairing / building up my drive all day robot collection. Here they are:
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Re: Peter Wallers Robot Ramblings
They all look great. I like the purple grabber.
Re: Peter Wallers Robot Ramblings
The new alsoran looks great.
Daniel Jackson.
Team Hectic.
Many antweights
Super antweights: territorial.
Fleaweights: fleadom fighter, gaztons.
Featherweights: hectic (under construction)
Team Hectic.
Many antweights
Super antweights: territorial.
Fleaweights: fleadom fighter, gaztons.
Featherweights: hectic (under construction)
- peterwaller
- Posts: 3213
- Joined: Fri Feb 15, 2002 12:00 am
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Re: Peter Wallers Robot Ramblings
I have been looking at ways to improve the design of my tracks.
The existing tracks have a flexible 3D printed insert to stop them stretching too much and provide the drive pins but there is quite a lot of friction between the rubber and the side walls of the wheels and also small bit of rubber from around the drive pins shown below gets into the gearboxes.
So I have changed the design so only the 3D part runs on the wheels.
Here is the insert, the insert in the mold and the finished track.
Below is a close up of the insert showing how the rubber is molded through the three holes into the hollow drive pin area to ensure the tracks are held on firmly.
The existing tracks have a flexible 3D printed insert to stop them stretching too much and provide the drive pins but there is quite a lot of friction between the rubber and the side walls of the wheels and also small bit of rubber from around the drive pins shown below gets into the gearboxes.
So I have changed the design so only the 3D part runs on the wheels.
Here is the insert, the insert in the mold and the finished track.
Below is a close up of the insert showing how the rubber is molded through the three holes into the hollow drive pin area to ensure the tracks are held on firmly.
- peterwaller
- Posts: 3213
- Joined: Fri Feb 15, 2002 12:00 am
- Location: Aylesbury Bucks
- Contact:
Re: Peter Wallers Robot Ramblings
Here is the final track on a test setup with the new drive wheels.
https://youtu.be/u8IMARUlHO0
https://youtu.be/u8IMARUlHO0
- peterwaller
- Posts: 3213
- Joined: Fri Feb 15, 2002 12:00 am
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Re: Peter Wallers Robot Ramblings
I have been looking at the firmware in my controller and it appears I wasn't using the 16 bit timer anymore so as it can be configured as an 8 bit PWM timer I could redesign the controller and do away with the extra nand gates I had added to get it to work MX612 drivers.
I also decided to mount the tiny orange rx, the motors and power switch directly to the board to make a complete module that just needs a battery connecting (plus servo if required).
The board which came out at 38 x 20 mm is being made by Ragworm and I think I have redone the software ready to load only time will tell if it all works out.
I also decided to mount the tiny orange rx, the motors and power switch directly to the board to make a complete module that just needs a battery connecting (plus servo if required).
The board which came out at 38 x 20 mm is being made by Ragworm and I think I have redone the software ready to load only time will tell if it all works out.
- peterwaller
- Posts: 3213
- Joined: Fri Feb 15, 2002 12:00 am
- Location: Aylesbury Bucks
- Contact:
Re: Peter Wallers Robot Ramblings
The boards arrived yesterday and all appears to function correctly.
Here is the finished unit which comes out at 27.3 gms.
Here is the finished unit which comes out at 27.3 gms.
Re: Peter Wallers Robot Ramblings
This looks very good. Should save you a lot of room inside the robot for weapons and things.
Daniel Jackson.
Team Hectic.
Many antweights
Super antweights: territorial.
Fleaweights: fleadom fighter, gaztons.
Featherweights: hectic (under construction)
Team Hectic.
Many antweights
Super antweights: territorial.
Fleaweights: fleadom fighter, gaztons.
Featherweights: hectic (under construction)