Scaling Up My Scariest Combat Robot Yet - Subdivide B at RH7

Subdivide A was a 150g overhead attack combat robot that's proved itself in the arena, so time to make it nine times bigger. This 1.36kg battlebot features an all brushless drive and weapon with a composite 3d-printed and CNC machined frame for maximum durability.

~~~Links Below To Hardware I Personally Use In My Robots, As Featured In This Video~~~

~~~Music Used In Order~~~

[BrokenLinkRobotics]

Some detail on the video making process for those interested:

This video is the first I've made with my new laptop and software. Moved from a 2019 15" Macbook pro and Final Cut Pro to a specced out Framework 16 and Davinci Resolve 19. I wanted a project to make me learn the new software, and so a 42 minute video appeared. A bit different from the usual as it's less of a lecture and more of an event report, but hopefully its still entertaining and educational. Definately prefer Revolve over Final Cut though I have had an enormous amount of crashes thats somehow linked to how the software loads in media files.

As you can probably tell, I like putting together match highlight sections with music. Have been doing this since my FRC days, reckon its a good way of going about this as it allows me to try and communicate the i b of the event. Bonus points I can fill the dead space where slow motion clips have no audio, or the box camera is popping out of its mind.

1080p 60fps is what i've made all my videos in at this point as 4k is kinda pointless if the majority of people are watching on their phones. Personally even on my 2560xSomething laptop I set the quality to 720p. Both video and Audio are recorded on my Nothing Phone 2 at 1080p 60 for the most part, 4k 60fps for important stuff, 1080p 30fps for really long recordings. Have hours on hours of footage of the robot builds that never gets used but that seems like the way of things.


By the way, love the framework 16. Good performance, stupid storage and ram (4tb, 64gb), genuinely repairable and modular, helpful support and complete documentation. Especially coming from two MBPs for the 12 years i've had a computer of my own.

[Alexander_Sannikov]

14:28 the screw unscrewing itself while winding up the cutter is pretty hilarious and terrifying

[nak_attak]

The gyro controls looked so fun. You get to smash with your controller to smash with your arm!

[FenodyreeAv]

35:17 I believe that is called karma and felt extremely cathartic after seeing the earlier beetleweight fight.

[quantumview]

21:16 i think that might be the closest pit escape i have ever seen. Awesome performance from all your bots.

[BoredPerson-Gif]

Man I love watching these, your engineering is crazy.

[DiaUp]

As a Canadian, I was very confused with this music

[KnightNave]

The little kids for scale is awesome! Antweights are so cute!

[bami]

From the design thought process, the little manufacturing montages to the combat footage with tasteful slow motions thrown in that was one of the most coherent and entertaining combat robot videos i've seen in a while. Amazing work!

[crescentx]

14:09 Sounds like an air raid siren!! These little robots are truly terrifying and I would not want to be in the same room as it :p

[markxr]

I love watching your videos there is so much good engineering in there, from the CAD to the machining, to just understanding mechanical stuff.

I am crying into my tea, by comparison my robots are crude and badly made; the most advanced piece I've machined is a wheel hub which has only a few operations on a lathe or pillar drill.

I had at least a vague moment of sympathy when you broke the tap in the workpiece, I have done that on more than one occasion.

[Lwimmermastermetalart]

You’re quite an amazing young man. I’m a retired tool maker, and half baked engineer. As well as a custom motorcycle and performance parts line. I had my own shop with quite a few CNC machines as well. Now I’ve sold the business to my sons. They use Solid Works which is way beyond what I used back in the day which is amazing. I do however have a simple solution to your tapping process that may help you a lot. Drop me a reply if you’re interested. Again amazing engineering and fabricating. 👍🏼👍🏼

[mky]

9:20 I had a terrible experience with tapping holes in a shop class, and hole tapping scares me to this day. RIP that tap and part

[wowbowbow]

Im so excited for the future of this channel

[vincentsoubbotin]

Swerve drive is a crazy idea for a combat robot. Significantly more points and modes of failure, plus twice the actuators, and non-invertible in the config you have. Personally, I don't see that big of a benefit over holonomic due to the weight and complexity implications, but you're the expert.

[austinclark]

I'm in debilitating pain due to an allergy to neproxin I didn't know I had. Thank you for this video, it's helping a lot.
I love your channel, the way you break down your bots into approachable concepts, the way you show your thinking, and also your dry humour. It's definetely a nice break from the 'attention attack' style most videos are these days, while still being very enriching.

[ramnrmeul]

I suspect the reason that the small disc on Derive is so potent is that the lifting arm frequently forces openings on the bottom of other robots.

[scotty]

Your videos continue to amaze me with the dedication, effort and awesome engineering. A pretty great result, especially the driver awards. Once those little kinks are sorted, you'll have a powerful and dependable roaster or bots

[jessegroves]

1:54 happy to be the cause behind the end of this streak (:
Another great video of course. Very keen to see flywheel flipper development along with scale, subdivide etc. would a 'roll cage' aswell as rear stabilising forks on DES help with staying planted and reducing the likelihood of bouncing off the weapon when unstable?

[gtdgabriste]

@14:30 - we didn't need that one anyway.

New BrokenLink video? The day has been officially made great.

Still no one wheel melty, but i'll let you slide on that. Great video, as always. Thank you for sharing your processes.