• Deathly Hallows's Avatar
    Yesterday, 11:23
    So not quite done -but this is a mock up of Evil K'Weevil. LiPo 3S RB-Sct-1060 geared drives (12V 730 RPM) Rotary interchangeable weapon in drill chuck Weapon design uses drill motor (but trying...
    12 replies | 512 view(s)
  • Deathly Hallows's Avatar
    16th November 2017, 22:56
    Still working that design through. Getting under weight limit is killing me. Of course this is also all calculated as not drilled a hole or soldered a wire yet. The motors, wheels and hubs look...
    12 replies | 512 view(s)
  • Deathly Hallows's Avatar
    16th November 2017, 22:41
    My current design is coming in not that far away at 240mm in the CAD. Is that the final materials for your base? I was thinking of 1.5mm Aluminium Also curious what the second mixer you referees...
    18 replies | 1911 view(s)
  • Deathly Hallows's Avatar
    16th November 2017, 13:49
    Thanks - and for £100 more you can get The basic Flashforge I see. So message is save your money.
    13 replies | 1193 view(s)
  • Deathly Hallows's Avatar
    16th November 2017, 13:26
    I agree - the demo print is truly awful, yet the 'finished' items shown in the stills look good, no holes or bumps. Do you think the stills are photoshopped or objects polished; or that they were...
    13 replies | 1193 view(s)
  • Deathly Hallows's Avatar
    16th November 2017, 11:33
    My wife told me about this - 3D printer from ALDI for £300! She asked if it would be any good for my robots - anyone heard of the Balco 3D printer touch before? Someone posted its a i3 clone in...
    13 replies | 1193 view(s)
  • Deathly Hallows's Avatar
    15th November 2017, 21:37
    I was thinking about how to add a light easily. I came across this if your power is 12V or under it would work out the box. I have seen light strips on EBay too that claim to have built in resistors.
    7 replies | 242 view(s)
  • Deathly Hallows's Avatar
    15th November 2017, 12:05
    Thanks for your input. It won't be a ram bot, but if drives are good that will be fine attack too. The intent is for something a little different. I want to get further into the design before...
    12 replies | 512 view(s)
  • Deathly Hallows's Avatar
    15th November 2017, 08:21
    Damn it - must have been half asleep. <EDIT - still asleep the ESC has no reverse! > I found these rough looking units on ebay no mention of reverse but the advised applications would require it....
    12 replies | 512 view(s)
  • Deathly Hallows's Avatar
    14th November 2017, 23:42
    I reworked the design again. However it seems to me that the way forward is to resolve the internals first, then I can build a box they fit inside. I can rework the chassis ad infinitum without...
    12 replies | 512 view(s)
  • Deathly Hallows's Avatar
    13th November 2017, 23:06
    Keeping weight under 1.5Kg is going to be a lot harder than I thought. The mass calculations in the OnShape CAD very quickly highlighted that the initial design was not viable without some radical...
    12 replies | 512 view(s)
  • Deathly Hallows's Avatar
    12th November 2017, 22:18
    A picture says a thousand words The front face is missing (as are the wheel, internals and some sub structure), from which the weapon protrudes, positioned centrally.
    12 replies | 512 view(s)
  • Deathly Hallows's Avatar
    12th November 2017, 19:37
    Ladies and Gentlemen, I am proud to announce the build thread for my first combat bot. The text bed featherweight robot went really well and was completed to rolling powered chassis in record...
    12 replies | 512 view(s)
  • Deathly Hallows's Avatar
    10th November 2017, 19:44
    Looks great guys! I have same issue for battery. Velcro strap is an easy option need to source one myself. Thought about adhesive Velcro patches but perhaps battery heat would weaken glue.
    36 replies | 4835 view(s)
  • Deathly Hallows's Avatar
    10th November 2017, 12:53
    Deathly Hallows replied to a thread RC mixing in General Chat
    Rather than starting a new thread I want to ask some basic questions about mixing. I am currently using a Dual channel Sabertooth with built in mixing which is brilliant but more expensive than...
    6 replies | 674 view(s)
  • Deathly Hallows's Avatar
    10th November 2017, 10:31
    Just in case you are confused - I changed my name After signing up I realised my name was too similar to Team Death. They were very nice about it and said it was OK by them, but to avoid...
    11 replies | 488 view(s)
  • Deathly Hallows's Avatar
    10th November 2017, 08:20
    Deathly Hallows replied to a thread CAD help in Other Projects
    Yes - every drawing created with a free license is added to public library. If its an assembly then you can open the drawing and copy the part or sub-assembly. I have watched the first couple of...
    4 replies | 241 view(s)
  • Deathly Hallows's Avatar
    9th November 2017, 19:32
    Cheers - thanks for the feedback. Yes when I ramped up the spin (couldn't help my self a little vistory spin) at about 80% power the wheel flew off. But by then the thing was a blur. That was hand...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    9th November 2017, 12:56
    Not raining and I had an idea how to fix the wheels. So this still has temporary axles and is just a test bed. Hell it's quick! I think I got my calculations wrong for my speed estimate. I need to...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    9th November 2017, 08:56
    Deathly Hallows replied to a thread CAD help in Other Projects
    OnShape may be worth a look too. Also cloud based, and free for none commercial use. I am definitely no expert, but first impressions are good. I will check out the Autodesk option too. What would...
    4 replies | 241 view(s)
  • Deathly Hallows's Avatar
    9th November 2017, 08:48
    Why I chose fairly big wheels - I gave it some thought and I see some advantages: - A larger wheel makes more contact with a surface than a smaller one - The rolling circumference is larger, so a...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    9th November 2017, 08:42
    Ah I think I see. I can imagine fixing the wheels securely is a major task for many robots. Certainly using drill chucks is easier at this stage. I was looking at the drill motor mounts on the...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    9th November 2017, 08:34
    Thanks for the advice. In my case the large washers and PTFE really held them solid. Turning up the torque on the blots would be very solid. I could further strengthen by drill 4 small holes...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    8th November 2017, 22:03
    Please find attached some pictures of the 14.4V Argos Drill motor - so you check if compatible Hope this helps!
    5 replies | 1594 view(s)
  • Deathly Hallows's Avatar
    8th November 2017, 21:55
    Thanks Theo that seemed to work. However I have trouble getting axles in my wheels. The internal diameter of the bore is 13mm the max bit size in my drill motors is 10mm which I only discovered...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    8th November 2017, 08:53
    Hello Shakey, Do you know if these fit the Argos 14.4V too? Don't have any measuring calipers to get accurate measurements. But I can give it a go with a clamp and a ruler, if you don't already...
    5 replies | 1594 view(s)
  • Deathly Hallows's Avatar
    8th November 2017, 00:00
    Dip 5 is down and off. This was as per the instructions in the Haynes Manual. The recommendations were as follows: 1 - Mixed - ON 2 - Exponential - ON 3 - Lithium - ON (recognises 4 cells) 4...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    7th November 2017, 23:09
    No not done anything yet. So it's not unusual then? Need to get my transmitter manual out and watch some youtube videos. I guess the transmitter could have different values or ramps on each axis...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    7th November 2017, 21:44
    Today I got the motors wired up. The wheels look quite good, really solid things. Only issue is the bore is 13mm too big for any nuts I had lying around so I had to improvise and use some expanding...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    7th November 2017, 17:10
    Deathly Hallows replied to a thread Radio sets in Featherweights
    I bought the top one. Yippee! Thanks for confirming. So far I am happy with its features and functions. Case feels weak but the switches feel OK, which I guess is what matters. In the box was a...
    12 replies | 621 view(s)
  • Deathly Hallows's Avatar
    7th November 2017, 12:25
    Deathly Hallows replied to a thread Radio sets in Featherweights
    Now I am new to this 'game' but I think the Flysky i6 and Turnigy version are the same. Now I have seen that the i6 can have custom firmware loaded that unlocks all 10 channels. It also has mixing...
    12 replies | 621 view(s)
  • Deathly Hallows's Avatar
    7th November 2017, 10:56
    Oh and as it's a chopping board so there are all the usual colours too at the same price. Blue, White, Yellow and Green. Didn't see red though.
    9 replies | 325 view(s)
  • Deathly Hallows's Avatar
    7th November 2017, 08:36
    You'd need more than 7 to get a meter square. Still cheaper though, hohwever you'd have the cracks and less flexibility in cuts/sizes. If the panels are small I'd be tempted.
    9 replies | 325 view(s)
  • Deathly Hallows's Avatar
    6th November 2017, 22:26
    Life! Embryonic life but life none the less. The ESC arrived and though either the soldering iron I bought is awful or my soldering skills are, I managed to get battery connected to ESC connected...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    6th November 2017, 18:33
    I think most of us are working on a budget and I like your figures. I guess if they counted in man hours of the whole team and had high bill rates you could get big numbers pretty quickly. I also...
    77 replies | 13453 view(s)
  • Deathly Hallows's Avatar
    6th November 2017, 13:06
    The battery on the drill is a Lithium Ion rated 14.4v 1.3Ah 18.72Wh and weighing 284g They're the ones from the Argos 14.4V simple Drill My ESC will arrive today. Getting these wheels from...
    28 replies | 1183 view(s)
  • Deathly Hallows's Avatar
    6th November 2017, 08:32
    Thanks the Arena info was helpful. Section 11 I had read and compliance to two of the three would be OK as both ideas would pass the 20% rule. Not kinetic mass type spinner, (essentially it's about...
    28 replies | 1183 view(s)
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About Deathly Hallows

Basic Information

Age
45
About Deathly Hallows
Name:
Simon Hallows
Biography:
I have loved Robot Wars since series 1. Avid fan and always wanted to build a robot, had no money and no time back then. Now a bit older, wiser and it's time to live the dream and build a robot!
Location:
Scotland
Interests:
Hoping this could be a hobby. F1 fan & science geek
Occupation:
Yes - It's complicated
Robots:
Currently working on ideas, researching and working out a budget.
First task a proof of concept

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Yesterday 17:05
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Recent Entries

Is designing as much fun as battling?

by Deathly Hallows on 16th November 2017 at 22:31
I am really getting into the designing part of the sport.

Spent ages trawling websites like Robotshop, Dx.com, technohotsonline, eBay and Amazon. As I am working on a beetle weight is critical. I am also getting to grips with OnShape. I am able to model most simple things that a vendor has a drawing for. Motors, hubs, wheels etc. The built in mass calculator also shows just how much I save by narrowing a plate from 2mm to 1.5mm or drilling out holes. This is making the exercise

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Getting into OnShape

by Deathly Hallows on 11th November 2017 at 21:24
I came across OnShape and really like the tool based on my limited experience.

Here is the website

For an expert this is probably really easy, but I am rather new to this so it's taking me a while to really be able to do very much. What I like is the structured approach, powerful tools, 3D rendering, materials built in, and access to massive set of pre-built objects.

So far I have only managed to make HDPE planes with slots cut or holes countersunk. But

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It's alive!

by Deathly Hallows on 10th November 2017 at 09:05
The wheels are fitted at least to the level I need now. M10 bolt padded out to ensure central and then washer and nut to clamp the wheel. It will do for my test bed.

Now I need to work on designs here are a few concepts I am playing with:

Code name: Evil K'Weevil
Weight: Beetle (could be scaled up)
Body: Flat
Drive: 2x2, any way up
Weapon: Core Cutter

Code name: Ali-grater
Weight: Feather
Body: Angled wedge to assist self

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Blinking Hell it's Crap - featuring Axle Faulty

by Deathly Hallows on 8th November 2017 at 23:29
Still no luck finding a way to use those wheels. So I have ordered replacements with a slimmer bore. The original ones I actually found a really solid way to fit an axle but the drills wouldn't open wide enough.

M12 threaded bolt bar, wrapped with some PTFE, nut and washer each side was so good! Fitted brilliant on the wheel and so solid, would have taken an elephant to stand on my bot to snap or bend them. I am keeping them and perhaps I will find a way around the issue (I saw

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The wrong sort of weather

by Deathly Hallows on 7th November 2017 at 23:45
It's damn cold in the garage. However a thick hoodie and a small radiator plus some enthusiasm means stuff still gets done, despite being able to see my breath outside.

After some soldering and bodging I managed to get motors hooked up, and have a kill/safety jumper built in the circuit. Also sneakily heat shrunk the soldered joints in the oven when my wife was out . Worked fine and done before the oven reached 125'C

Issues:
Speeds not matched (read up on programming

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