Ok, thanks Rory.
Does anyone know of the lemon rx provided direct access to the ppm stream?
Search found 105 matches
- Sun Apr 05, 2015 6:27 am
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
- Fri Apr 03, 2015 3:38 pm
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
Re: Team MedBots
Thanks for all your help so far. If I were to stick with mosfets and diodes and used a configuration like this: http://i1261.photobucket.com/albums/ii593/maxmedhurst/rOBOTS/10165AF1-003E-4785-9E23-0779FF370A30.jpg Would I get a problem with the motor braking between pwm pulses and would I get motor ...
- Fri Apr 03, 2015 1:42 pm
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
Re: Team MedBots
So something like this:
http://www.ti.com/lit/ds/symlink/sn754410.pdf
I guess that doesn't have built in braking but it's not the end of the world if the motors don't need brake. Would I still need a fly back diode?
http://www.ti.com/lit/ds/symlink/sn754410.pdf
I guess that doesn't have built in braking but it's not the end of the world if the motors don't need brake. Would I still need a fly back diode?
- Fri Apr 03, 2015 1:13 pm
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
Re: Team MedBots
Melty brain spinner! I only need to drive each motor in 1 direction so no real point using a motor driver. So plan is to have a mosfet driving each motor then a fly back diode across the MOSFET so that when the MOSFET is off you get braking of sorts. As in writing this I'm realising that the diode w...
- Fri Apr 03, 2015 12:53 pm
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
Re: Team MedBots
Ok cool. So something like this should work fine: http://pages.ebay.com/link/?nav=item.view&alt=web&id=321712256525 Not sure what the 4th pin is for, I guess it's just connected to the drain. Then a fly back diode like this: http://pages.ebay.com/link/?nav=item.view&alt=web&id=350964...
- Fri Apr 03, 2015 12:14 pm
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
Re: Team MedBots
I thought when using PWM you need a mosfet rated substantially higher than the stall current of the motor as when driving not at 100% duty cycle the midget can see much more current (for shorter times) than the motor is seeing? ie if say the motor was drawing 1a but is running at 50% duty cycle the ...
- Fri Apr 03, 2015 11:35 am
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
Re: Team MedBots
What size mosfet would people recommend to drive one of the high power any weight gear motors with PWM? And what current capacity diode would I need to protect the MOSFET from induced emf flowing the wrong way (which will also act as an electronic break)?
- Wed Apr 01, 2015 1:53 pm
- Forum: Antweights
- Topic: Peter Wallers Robot Ramblings
- Replies: 755
- Views: 636559
Re: Peter Wallers Robot Ramblings
Did you just cut those titanium teeth by hand? I'm looking at titanium teeth for the next incarnation of 50/50 but got a quote of £70 for 8 small teeth from laser master with me supplying the material which I feel is pretty unreasonable.
- Mon Mar 30, 2015 10:31 pm
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
Re: Team MedBots
Hmm do you have any pictures of the underside/ from the side of the motor? I wonder how hard it would be to rebuild the base to provide better mounting points.
- Mon Mar 30, 2015 6:07 pm
- Forum: Antweights
- Topic: Team MedBots
- Replies: 127
- Views: 89121
Re: Team MedBots
Thanks, that's helpful but I'm not sure what constitutes powerful in an antweight?
Has anyone used this motor:
http://hobbyking.com/hobbyking/store/uh ... duct=14554
Is it any good?
Has anyone used this motor:
http://hobbyking.com/hobbyking/store/uh ... duct=14554
Is it any good?