Hey Guys,
I've read lots on the forum, and posted a hand full of times, but I thought it was about time I launched my first major project (well, my second really, I converted a wall-e, but I thought there was enough of those on here
).
So here is announcing OmniMC, an Omnibot 2000 media centre
The idea is to make him all RC and to also house a Raspberry PI running RaspBMC as the media centre bit. I'll then add some speakers and maybe some under-bot lighting
I'm wondering if then I can control the whole thing with one of these:
Other than that, I'm kinda just winging it and seeing what other bits and pieces I come up with.
To start with though, I've done the usual thing of gutting him and sticking him through the dishwasher
So right now, he is prepped and ready to go.
I've already got my EZ-Robot kit, and a few components such as 6v battery
Some blue replacement bulbs
My Raspberry PI (which arrived today) and I've just won a screen for his chest
While I'm waiting for some other bits, I've also been looking at making some replacement tires which you can see details of in one of my other posts
So that's pretty much the state of play at the moment. I'm pretty much a novice at all this, so I'm looking forward to the challenge. Lets see if I've bitten off more than I can chew
Other robots from Synthiam community
Kleinjd's 17 Servo Biped (Formerly Robonova)
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@DJ thanks man, means a lot coming from you
Thanks for the tip too regarding the speed, I'll give it a test.
I've been meaning to update ARC for a while. It's funny though, hooking everything up in ARC is the easy bit, so just haven't updated yet because I've been so busy converting him
I will be updating it soon though.
PS If anyone does want one of those brackets, I've made it public on shapeways so you can just pay to have one printed if you like.
www.shapeways.com/shops/bnb
Nice!
Hey Matt , looking great. In glad to see someone else making headway on a omni 2k build. Kudos! I watched the video and tried repeating those results. I.notice your arms seem like the May be strained at certain angles. What serve are you using? I noticed djs high torque digital servo is smooth and high torque and may smooth out the arm movements. Also another low cost servo is the power hd analog 1501mg 240 oz in
Hey @josh, the servos are mg996r's so should be tough enough. I take it you are referring to the humming when you say "strained"? If so, I'm not sure what is causing it either. The servos aren't taking any weight, other than rotational forces on the gear and shouldn't be any more than if it was at the shoulder. Maybe it's dodgey servos?
Pretty much all the digital series want to make a buzz noise. Nothing dynamat cannot absorb
i was offering to when the arm slows down like its binding or resistance. I believe its just angle of the arm. I was thinking maybe a stronger analog servo may eliminate buzz sound and higher torque of 240 oz in Maybe smooth out the movement. If you can make 3d prints of those large gears in the arms because those guys shatter easily. At least have the 3d print image ready to go when one breaks. I broke two gears which is why i eliminated them from Jarvis.
Hey josh, ah cool, didn't know that. I'll see if I can find any. I think the jurkyness may also be down to my one handed trackpad abilities though
Regarding the gears, I have made a silicone mould of the middle one, so can cast another if I need to. Good to know to keep an eye on them though.
Ok, I've spent a little time modeling the gear system inside the arms. The gears aren't an exact match to the originals, but they should still work (might have to grind one of the posts used by the old small gears that used to power it from the motor, but as it's not used any more it's not a big deal)
I think I might need to tweak it a little bit, and add some supports in for the shafts, but once I have a bit of cash again, I might give it a try getting it printed.