Questions tagged [power]

In physics, power is the rate of doing work.

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17
votes
3answers
3k views

What is the best way to power a large number (27) servos at 5 V?

I apologize if this question may sound a little vague. I am working on a robotics project that will contain 27 servos of various sizes and I am having trouble figuring it how they should be powered. ...
35
votes
4answers
45k views

Quadcopter liPo battery weight/capacity trade off

I'm trying to find where additional battery capacity becomes worthless in relation to the added weight in terms of a quadcopter. Currently with a 5500 mAh battery, 11.1V, I can get between 12 minutes ...
3
votes
2answers
325 views

Can high voltage power lines provide a super highway for drones?

Is there a way to convert the EM field that surrounds high voltage power lines for direct usable electricity for air or ground drones for continuous flight or travel? Added: Yes could the EM field be ...
7
votes
5answers
543 views

Arduino Motor control

I'm working on a rather low budget project, and need some way to control four or more motors using one Arduino. I've looked at motor shields a little, but I have a shield on top of it already, It does ...
2
votes
1answer
364 views

How do I interface a TLC5947 with small motors?

This is a follow-up to this question: Prototyping a device with 25-100 small DC 3.0V motors, is Arduino a good fit? I've decided based on the answer that sending the control signals through multiple ...
2
votes
1answer
53 views

Motor driver damage and jerking behavior when load driving in same direction as motor

I'm having trouble with a gear motor being powered by a power supply, while it is being driven by the load in the same direction as the driver wants to drive it. Here is a simple diagram: The gear ...
1
vote
0answers
122 views

increase current draw from serial port of icreate 2

This is from the icreate 2's document: "Pins 1 and 2 (Vpwr) are connected to the Roomba battery through a 200 mA PTC resettable fuse. The continuous draw from these two pins together should not exceed ...