"Flip-it” new build/project

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Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Sat Nov 10, 2018 11:44 am

Flip-it rebuilt in a 3D printed shell.

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Spaceman
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Re: "Flip-it” new build/project

Post by Spaceman » Sat Nov 10, 2018 1:01 pm

Thats looking really good.
Team 1202

Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Sat Nov 10, 2018 9:30 pm

Thanks spaceman!

“Finished” another robot today. However it has a 3D printed weapon. Going to have to buy a bar of aluminium.

Introducing Stolen Concept weighing in at 132g.

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Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Thu Nov 22, 2018 5:29 pm

Made myself a Transmitter. Printing lid and adding in a switch still need to be done.

I am powering it using a 1s lipo (18650 rescued from a broken laptop) and boosting it up to 5v.

I have now built all the components for a DIY robot. When I get some spare time around Christmas I am going to write a guide on building an antweight robot for less the £20(even without a 3D printer).

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MarkR
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Re: "Flip-it” new build/project

Post by MarkR » Thu Nov 22, 2018 7:17 pm

Cool, how've you done that?

I see some kind of Arduino-type board, what protocol does the radio run on?

Does it use a RC protocol? Or bluetooth? Wifi? Something else?

Mark
Robot: Betsie - RaspberryPi controlled flipper bot with gyro stablisation - too clever for her own good?

Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Thu Nov 22, 2018 7:58 pm

MarkR wrote:
Thu Nov 22, 2018 7:17 pm
Cool, how've you done that?

I see some kind of Arduino-type board, what protocol does the radio run on?

Does it use a RC protocol? Or bluetooth? Wifi? Something else?

Mark
It uses RC protocol, you have to set the frequency up to match the modules. Here is a guide on how to use the modules. I just adapted it suit my needs and added mixing into the code.

https://dronebotworkshop.com/nrf24l01-w ... -joystick/

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MarkR
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Re: "Flip-it” new build/project

Post by MarkR » Fri Nov 23, 2018 11:05 am

It looks like the RadioHead library has its own set of protocols which are not necessarily compatible with anything else. I don't see any mention of standard RC protocols in there (e.g. the dsm2 and dsmx or flysky protocols?)

But that's ok if it works for you.

I'm looking at how to build a receiver / control board using a nrf52832 module, it seems that it's possible to run RadioHead on there, so that's an option (and use your transmitter). The module also supports Bluetooth LE (aka Bluetooth 4) which seems like it's something of a headfuck; Betsie currently uses "Bluetooth Classic" with a PS3 controller.
Robot: Betsie - RaspberryPi controlled flipper bot with gyro stablisation - too clever for her own good?

Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Fri Nov 23, 2018 1:02 pm

Ah ok, I just presumed the Nrf24l01 was the same as an RC protocol just didn’t link to any of the well known brands.

The Radiohead library works on quiet a few modules. I just chose the NRF24l01 as you could get one with a amplifier and one that was small enough to fit in an Antweight. Plus there are lots of guides on how to use it.

I can email you my code and list of modules used if you want to see how I’ve got it working.

Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Tue Dec 04, 2018 10:05 pm

Lastest batch of student built robots, mainly year 7s. Notice D3 in the middle...his passion for building is amazing. Hopefully in 2 years we can build a school heavyweight.

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Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Sat Dec 15, 2018 2:09 pm

Building a new arena for school. With the potential to add in a polycarbonate shell afterwards. That can either be clipped on to use spinners or removed completely to use non destructive robots. Working towards hosting a AWS next year at the school. :)

I bought a 6mm MDF board for £14 and 2x CLS wood for £2.5 each. Super cheap to build the base...the expensive bit will be building the polycarbonate protective outing I think...

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Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Mon Dec 17, 2018 7:36 pm

Arena finished... I’ll leave the polycarbonate shell/protective cover for a rainy day.

Dimensions:
Arena - 100cm by 82cm by 12.5cm
Battle arena - 72cm by 82cm

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Ocracoke
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Re: "Flip-it” new build/project

Post by Ocracoke » Mon Dec 17, 2018 10:17 pm

Looks neat, very slightly smaller than mine (81cm square). Polycarbonate sides and roofing shouldn't be too hard.
Team Kaizen

AW - Osu, Ikari, Ramu
BW - Shu!, Mita
FW - The Honey Badger
MW - Kaizen, ???

Paulmchurd
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Re: "Flip-it” new build/project

Post by Paulmchurd » Tue Dec 18, 2018 11:50 am

Thanks. How does that size feel to drive on? I wanted to make a size that wasn’t too small and make it too easy to drive off the edge and not to big there would be no battling.

I am also going to print some more clips to close off more edges. Depending on the age of the roboteers to make it easier for them. Plus a couple of goals for football!

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Ocracoke
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Re: "Flip-it” new build/project

Post by Ocracoke » Tue Dec 18, 2018 5:00 pm

The size feels OK, plenty big enough for a mass rumble of most of the Ants that went to the BotFest pilot back in July but small enough to prevent no battling in 1v1 fights. I think the arena used for Ant Freeze is about the same size as yours, perhaps a little bigger but definitely not more than a metre long so you'll probably find your is going to be suitable.
Team Kaizen

AW - Osu, Ikari, Ramu
BW - Shu!, Mita
FW - The Honey Badger
MW - Kaizen, ???

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