Peter Wallers Robot Ramblings

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peterwaller
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Re: Peter Wallers Robot Ramblings

Post by peterwaller »

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.
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Re: Peter Wallers Robot Ramblings

Post by peterwaller »

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.
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Here it is next to Dominant for size comparison and to show the matching colour scheme.
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Its a bit quick for me but then I don't have to drive it. :roll:
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Re: Peter Wallers Robot Ramblings

Post by peterwaller »

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

Post by AntRoboteer »

They all look great. I like the purple grabber.
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Re: Peter Wallers Robot Ramblings

Post by Hogi »

The new alsoran looks great. :-)
Daniel Jackson.

Team Hectic.

Many antweights

Super antweights: territorial.

Fleaweights: fleadom fighter, gaztons.

Featherweights: hectic (under construction)
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Re: Peter Wallers Robot Ramblings

Post by peterwaller »

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.
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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.
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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.
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Re: Peter Wallers Robot Ramblings

Post by peterwaller »

Here is the final track on a test setup with the new drive wheels.
https://youtu.be/u8IMARUlHO0
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Re: Peter Wallers Robot Ramblings

Post by peterwaller »

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.
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Re: Peter Wallers Robot Ramblings

Post by peterwaller »

The boards arrived yesterday and all appears to function correctly.
Here is the finished unit which comes out at 27.3 gms.
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Re: Peter Wallers Robot Ramblings

Post by Hogi »

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)
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