James baker. Put your claws away!
David- Fuses are always important during testing:)
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James baker. Put your claws away!
David- Fuses are always important during testing:)
James, another one of your classic replys, fantastic! if i said grass is green you would post back claiming it wasnt, he he. ..hey why not put the whole story on the forum, just a thought :)
scince you changed your email address, your emails go straight to the junk mail and so get deleted. jb you have my phone number & and ive not recived 1 call dispite me trying to get through to you with no reply many times.
now lets not be plonkers and get on with the discussion in hand. I agree dave, In all cases i feel blowing a fuse is far better than blowing a speedo. just looking at the costs and convinience side of things.
Can any one give me a diagram to wire in the fuse ? I may well be upgrading to an IBC before too long, but, in any case, its useful
coming right up
Right, here it is...
http://www.micro-maul.co.uk/images/davewestoncircuit.jpghttp://www.micro-maul.co.uk/images/d...toncircuit.jpg
Ive adapted one of my existing diagrams to make it, which features a single IBC running a 4WD four motor machine but if you imagine the ibc is just two electronizes (the motors are running two per channel in the diagram so just imagine you are cutting one out of each channel for two motors/2WD).
I have put two fuse options on the diagram, each is labelled fuse block. If you dont know already, a fuse block is a small plastic plug which you can insert fuses into. You can get them and (fuses) from technobots.
The two fuse blocks down by the motors are what you really want - they are protecting the speed controller (and everything downcircuit from it) from big currents from the motors. Youll need one fuse per motor probably, in the diagram ive shown it as one per two motors (they are wired in parrallel).
The fuse block at the top only serves to protect the battery (NOTHING ELSE), you might want to put this there if you are worried about short-circuits further down the circuit from the motors. Most robots only run fuses on the motors and dont run this main one.
I should start charging for this you know :)
What happened to my beautiful circuit? :sad: lol
Ewan, nice drawing. However, the link should go into the positive side. Thats common practive.
Mike
Ah yes, my bad. Just remember that when your wiring up Dave, I havent got the time to edit the drawing right now...
All to good use AJ :)
You can also subsitute a fuse with a thermal reset switch. They commonly come in sizes ranging from 10amps to 80amps. Basically they are a slow blow bi-metallic cutout that will take 1-2 seconds of higher peak current before they cutout. Give them around 5seconds and they cut back in. Good for those situations where you stall a motor for a few seconds but still want to continue on battling :proud:
I think I should clarify my intentions with these replies.
They ARE NOT personal snipes at JC
They ARE an attempt to stop people who do not know as much as they think they know giving advice to people who are new, Ewans simple mistake of putting links in the negative line for example, something JC has done in practice on a customers robots. As I said, it is nothing personal, just making sure the newbies get the best info.
For the record, Kane makes a good point, and there is a great reason to put a fuse in. Notice nobody else came up with that in their advice. Goes to show Kane is the best person to listen to out of the people who have answered (me included)
So, anyone know how come new e-mail addresses go straight to junk mail? sounds more like a petty spite to me. maybe its just a coincidence but Ive never heard of that before.
Dont really want to discuss anything with you on the phone JC, just post the stuff Ive paid for, and the rest of my property along with the Vids I loaned you, using the money I sent you for P&P. Its been 6 months, Im sure you are busy but this is getting a bit silly. If you dont have my stuff, Ive sent the values, so send me my cash back.
Back on topic, I would suggest to Dave Weston, with no offence meant, that if you do not know how to wire in a fuse you should maybe do a little more research before building anything, or at least have a look in some live events to see how the electronics are done in the flesh.
(Message edited by jamesb on November 28, 2005)