Mindboards

Well, yes, I was only referring to the "brain" of the unit. Obviously you still need the screen and buttons and all that, and I'm sure Lego can figure that out. My point is that the current NXT is severely underpowered and lacks many basic features.

Ok so I think that the NXT hardware is lacking quite a bit, in terms of features (like com ports, external power) and performance (cpu speed, flash/memory). I know it's a cost issue, so I heard about this thing that may be actually pretty useful, and turn the NXT into a practically a full computer: ...

You may find Pulito , the sweeping robot interesting. All it has to do is bump up to the charging station to charge. If I was to replicate this, I'd stick the charger bars top to bottom, instead of side to side, so that it would be able to charge from a completely round charging station, making doc...

Well, 3,000mah is measured in milliamp hours and refers to the worst of the batteries. Once that has died the rest it is game over. Capacity = times x amps (roughly, since it is non-linear) So if you are using 100 ma then expect 3,000/100 = 30 hours. and " " " " 200 " "...

I'm not too familiar with electricity maths.... how would one calculate the run hours then? Assuming a good quality alkaline may have up to 3000 mAh at a low drain, is that multiplied per battery, like the voltage? Has anyone ran a multimeter to check the peak load when running 3 motors at 100% powe...

The ARM has built-in sleep and other power savings modes. The problem might also be that if a program is running, and it's sitting in a loop, it's probably using 100% of the CPU. Ideally there should be a "wake" method, where the CPU can sleep and if anything comes through an input, it wak...

I'm looking to make a robot that basically sits and waits for input. For example, if the only sensor plugged in is the touch sensor, and assuming the unit has standard 1.5v alkaline batteries (or lithium), how long could it last? I'm thinking that the highest power consumption might be the ARM7 proc...