Yeah, I figured that out as well, but all I'm wanting to know is that if the LEDs I linked in my previous post is suitable for the task at hand, or if there's any out there that do the job better and if so, I'd love to know what it'd be.Originally Posted by McMad
So I measured the radius of drive motor axle to floor, and it's about roughly 5 and 1/2 to 6 cm off the floor, which means best bet for wheels is possibly a 120mm-125mm wheel maybe? And seeming as that's the case, would this be a suitable wheel to go for here?
If not, what are some other suitable wheels at that size, considering that I don't have a lot of space to work with, and I'm wishing to make it a direct drive from axle to wheel.
I don;t think those LED's are suitable on their own, they'd need a resistor to protect them as they can only take a few volts. Someone with a better understanding of the voltages can suggest a value.
You will need a resistor to reduce the current correctly, something like a 560 Ω Resistor will be suitable, if you go this route I have several am happy to stick in an envelope for you.
Otherwise if you want plug and play...
Heres some someone has pre made http://r.ebay.com/DBUsuv for single led a nice 10mm will be fine.
Otherwise look for '12 v LED'
If you do want an LED with resistor, I can see what I have got and send one to you too...
Last edited by Roboteernat; 2nd August 2017 at 22:57.
Just get some 12V LED strip on eBay. It comes with a sticky backing for easy adhesion and you can just wire them up in series to drop the voltage to them. I run my robots on 5S/6S with series linked LEDs and they're absolutely fine. No resistors or anything to worry about. They're also a lot brighter and more visible than normal LED bulbs.
I still have the offer for the LED strip if you would like a length? 12v or 24v rated. (in white tho)
Hi hi, sorry for the late reply.
I managed to get the fuses sorted out, went down to halfords and bought a set of 30 amp mini blade fuses, along with holders. Means more space for components at least.
Thank you for the insight Jamie, at least I don't have to mess around with resistors, which is one less thing to buy.
And Nat, I'll give you a nudge a little later to see if I can buy a couple of strips from you. Have to consult with my mother before hand, so she knows what I'm spending my money on and such haha. Which means I'm interested but I'll have to either contact you later on today or tomorrow.
Alright... more than likely the last time I'll bother this particular thread, as the item in question is castors... what'd be a decent castor for featherweights? And if so, would it be available with M6 sized holes too for convenience sake?
I don't know of any featherweights that run castors, even heavyweights don't tend to run them. They're often too weak for robot combat so most people either just let the leading edge of the robot/chassis run on the floor, or mount a low-friction material (eg. Nylon) skid plate on the underside of the robot.
Ah, fair enough, fair enough. I'll try to get maybe some kind of skid plate instead then. Might end up being part of a plastic bottle or some cut up aluminium soda cans, and try and smooth some of them out. If that doesn't work, I'll have to try and think of something else. Thank you for the information Jamie.
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