So I have always been interested in robotics, and it just so happens that I finally have both the time and money for a summer project this year. Something basic would be great, but the diy kits don't really appeal to me. I'm fairly confident with my mechanical skills, but I have no programming experience whatsoever. I think I would like to build some sort of pan and tilt turret that I could run from my computer using a usb cable. Not too interested in sensors for this project, just want to learn a little about servo control and some of the other hardware. I found the pan and tilt kit in the garage sale section (the one with the phidgets usb servo controller), but I'm not even sure if that's what I would need for this project. Any advice is much appreciated. On the other hand, If this is too complicated for a first time project, please tell me. Thanks in advance!
Figured I'd share some of my more recent work; Dragoon. This is an RX-64 based quad using an arbotiX and the new & upcoming RX-Bridge. Walking gait is still needing tweaking, the COG shift from a bot this large being propelled forward is causing the back legs to drift, so I'm still tweaking the NUKE code to correct for this, I'll post more as I make progress. Note, in the video I have the servos toned down considerably, it can move about 4x faster from what I've seen so far.
Over in the humanoids forum I've been blathering on about testing the Turnigy/MKS HV-300 servo. It makes much more sense for me to post over here in actuators.
I'm most interested is seeing the relationship between the various types of torque ( dynamic, stall, and holding. ) I'm especially interested in seeing the dynamic torque on this particular servo as I know the dynamic torque of the AX-12 has been reported to be less than half its stall torque.
If anyone has suggestions or ideas on the best way to go about this I would love to talk about it. Once I have the method worked out I'll test out some other servos as well.
Also.. If anyone has any data on big boy servos such as the RX-64 ( or anything else ) I'd definitely... [Read More]
Would like to share this with the trossen community. Might even post up a tutorial when finished
This was meant as a school project to engage my mind, challenge, and help me teach others about electronics whilst I am still learning it myself.
currently we have a glass tube with one coil, firing a 20mm x 5mm (round) mild steel slug.
The coil is a 20 awg (?) clear insulated copper wire, turned onto a custom made spindle at slow rpm (on a lathe to get turns accurate). 65 turns long, and 30 turns high, making it a total of 1950 copper turns.
Have one MOSFET hooked up to two power supplies. those powersupplies are in series, so we have 22.8V at 6.58A max. Currently the MOSFET is allowing 750mA at 22.8V through it, so tomorrow I am wiring up another two power... [Read More]
I'm building a small rover that I'm gonna use against my friends in our own little mech warefare thing. I just wanted to know ( and two of my friends as well ) what I would have to do to get one, or if i could, make one?
anyone know how to start to build our own basic atom pro 28 carrier board ??
without using Bot-board ll
i owned a bot-board ll
but i wanna learn more... anyone can help me??? please
i need to build my own carrier board for Basic atom pro 28... thanks...
What CAD software do you all use to generate drawings, DXF files and the like? I'm interested in making some small additional parts. I'd love to use something like Solidworks but paying $5K or so for it just doesn't compute relative to the overall finances of making robots.
Some of the over-the-net production companies provide software - onlinemachineshop has something which seems to work quite well, and Big Blue Saw has a Java app which seems pretty limited (doesn't do metric and doesn't appear to have any way to do radiused external corners, just for starters).
Is there something affordable that is suitable for this kind of hobby stuff rather than being aimed at full-time professional use?
i read the manual and i have three questions
1.- how many DC motors and how can I conect it to arbotiX(beacuse are two encoders but to many pins)
2.- can i use CMUCam2+ on arbotiX, and if is can how can i conect it them
3.- why dont you use CMUCam2+
I am new to this board and googled the whole day long to find some answers: no sucsess till now:
I have some serious prolems with the usb2dynamixel converter: I want to control a robot arm via PC using Windows7 and a usb2dynamixel converter and 13 AX12+ Dynamixels. Everything went fine until yersterday: My first machine is a Windows Vista based 32bit system, where I developed my software and tested the Dynamixel Configurator, so far, so good. Yesterday I tried two different Systems ( Win7 on my Laptop and Server 2008 on a different machine) On both machines I get major connection problems: When I look at the LED (RX) on the usb2dynamixel converter ist is flashing wild and does not stop sending data to the PC: so the whole system gets unstable and I can not connect to the TTL DynNet. On the Vista machine, there is not such behaviour, but since yesterday I have the Problem that from Time to time the Vista machine just reboots without any... [Read More]
Tyb's posting pics of his EX-106's got me totally jealous and thinking about how to build a larger biped. I'm trying to figure out how large a biped you can build given servo specs.
My current robot weight is 2kg and uses 18 AX-12's which have *stall torque at 18kg/cm and weigh 55g.
I am going to take a leap here with lots of assumptions..
I'm thinking that given two servos with equal torque to weight ratios you can build a biped normalized to the weight ratio. So let's assume the RX-64 has the same t/w ratio as the AX-12. A RX-64 weighs 2.1 times as much as a AX-12. So would you be able to build an RX-64 based robot that weighs 4.2kg? Now can you factor in the real t/w ratios. An RX-64 has 1.6 times more torque for its weight than an AX-12. So can you multiply 4.2*1.6 to get a total weight of 6.72kg for a RX-64 robot with the same performance of a 2kg AX-12 robot.
One ( of many ) things I am just ignoring is that a larger... [Read More]
I"m a bit of a noob to robotics, but have dabbled in elctronics a lot. I justed wanted to know which microcontroller is best for robotics in temrs of price and performance. A few people have told me Pic are the best, but I'm not quiet sure if it is the best. Thanx, DannyDeth.
Trossen Robotics Community
Hey guys,
Heyall,
My new baby. I put robots on hold. I know I just said that. But it was worth it.
[Cross-post from "Robotics General Discussion"]
