4
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How to control ESC from Arduino?
There are quite a few issues I see with your setup.
You are setting up the ESC in your code to use pin 9, but your diagram shows that you've connected to pin 8. Pin 8 won't do anything because the ...
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4
votes
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Parallel connection of batteries with equal voltage but different Ah?
You aren't being specific enough. Some chemistries would possibly allow this but others would not. If the batteries have the same nominal voltage than theoretically they should work fine in parallel ...
- 196
4
votes
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how to know if the LIPO battery I have is compatible with the motors and motor driver I have
You should check your driver specifications and get the battery accordingly.
The driver specs you need to check:
Voltage Rating
The voltage range that the motor is designed to operate. Within the ...
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3
votes
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How to calculate battery capacity for my robot system
30 minutes is half an hour. 323.344 Watts is approximately 324 Watts.
If you want 324 Watts for half an hour, then you want a (324 * 0.5) Watt-hour battery. This assumes, though, that your battery ...
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3
votes
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What battery capacity would be required to run a component for an hour?
Power (Watts, milliWatts, etc.) is given by:
$$
P = IV \\
$$
where $I$ is current in (milli)Amps, $V$ is voltage in Volts, and $P$ is power in (milli)Watts, respectively. Energy (Watt-hours, ...
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2
votes
How to calculate battery size for servo motors?
This typically requires a bit of testing with your actual payload. You can try to model it mathematically, but it's easier and more accurate to just plug it in and measure the current draw.
Current ...
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2
votes
using Li-Ion batteries in parallel
Hoo boy, let's tackle this one part at a time.
Weight
You're in luck! Lithium-based batteries are some of the lightest in the business! Obviously you could go lighter if you had Lithium Polymer ...
- 196
2
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AUV Lipo Battery capacity
You don't gave all information that are needed for such calculations. However, the technical details of the Thrusters give a peak consumption of 350 Watts each. So you have 6 of them, makes overall 2....
2
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How should I power my servo motor with the Adafruit PCA9685 chip?
Have you tried to connect the PAD supplied with the HSB servo the fifth picture on this page? It is not necessary but in the case that your battery is fully loaded it an cause an overload if you don't ...
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18 MG996R servo motors control and power
Yes, there are servo controllers capable of even 24 servos. As example, check out Pololu Mini Maestro board. It communicates with RPi through USB or UART and You can find more information about that ...
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2
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how to get an 8 hour autonomy for an underwater robot?
Lithium Polymer batteries are, in general, the best you're going to get as far as either energy per weight or energy per volume. Going to a different brand may gain your 10% more capacity per volume, ...
- 1,891
2
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Does anyone believe a high voltage battery say 100kV is possible? If so do you have a schematic or know a seller?
They do not have 100kV batteries. They use 12-volt batteries to power a fancy dc-dc converter, which steps up the voltage to 100kV with a Cockroft-Walton voltage multiplier. Ref: the abstract of the ...
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2
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What Battery Voltage to use?
A few things going on here. First of all -- voltage != efficiency (at least not necessarily). Efficiency is really a measure of total power output which is $I \cdot V$ (where I is current). Next, your ...
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AUV LiPo battery
If you want to run one motor at maximum output, it will draw 12.5 amps. If you run it for an hour, it will require 12.5 amp-hours of capacity.
If you have six motors running for an hour at maximum ...
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2
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Alternative for a 18650 2200mAh 3.7V Li-on battery
Welcome to Robotics, Jacques. Robot cars are a fun way to start down the slippery slope attractive activity of robotics. You won't run out of things to aspire to.
Is higher capacity safe? Yes.
The ...
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2
votes
How to recover low voltage LiPo battery?
First: Did you measure correctly? I know its not that difficult, but 0.32 V seems very low too me, even for a dead battery if its not a very old one.
If you measured correctly, I would recommend to ...
- 116
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votes
Can I charge a 12 Volt 2 Ampere UPS with a 9 Volt 0.6 Ampere Adapter?
The miniUPS clearly states that it takes an input of 12 V and a current greater than 1 A.
The voltage of the input is the most important. Using a 9 V supply will probably not supply sufficient voltage ...
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1
vote
Connect LiPo battery to Arduino Motor Driver Shield for RC Boat
You connect a battery to the shield via the power input terminal as described in the data sheet you linked. Refer to figures 1 and 4, and table 1.
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vote
how to get an 8 hour autonomy for an underwater robot?
In underwater autonomous vehicles there are basically two solutions to increasing long term autonomy.
The first, better power generation, (which has already been mentioned) won't really work in your ...
- 191
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vote
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DC motors are stalling at low voltage (L298N controller)
You have two motors that
draw 300mA without load at 6V
and you have one battery that is rated at
8.4V, 170mAh
Combined, you have two motors that draw a combined (2 * 0.3 * 6) = 3.6 Watts ...
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1
vote
How to calculate the maximum charge of the battery?
If you want to learn about batteries and their characteristics, you should probably go to the BatteryUniversity to learn a few things before you start to do calculations, because if you miss interpret ...
- 91
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vote
Can I use 3 blades instead of 2 blades with the same pitch and dia to increase the thrust of my motor?
Increasing the number of blades in the props increases the amount of thrust generated but at the cost of efficiency i.e. more current will be drawn as we increase the number of blades. This is due to ...
- 164
1
vote
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How should i select motor and blades for my Hexacopter?
Motor and blades must be selected on the basis of amount of thrust required. Estimation of thrust of a motor depends on battery voltage, prop size and motor choice. Changing one of these will change ...
- 164
1
vote
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Am I calculating my drone's power consumption right?
Your calculations assume that the motor will be running at full power all the time.
Assuming your quadcopter's weight is less than 4 times the max motor thrust (which it needs to be to have any ...
- 251
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vote
How to create a stable 48V 10A power supply?
You indicate the need to have both a stable 24V and a stable 48V power supply from a single battery. And that you are already using a 48V to 24V buck converter to meet the stable 24V need.
If you ...
- 121
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vote
How to create a stable 48V 10A power supply?
Usually, motors in robots are speed controlled, for example using PWM.
Design your system so it meets the spec at the speed you get when the motors are running at 42V.
With the supply above 42V, ...
- 531
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How to create a stable 48V 10A power supply?
Edit: I'm not sure if a 48V - 48V boost converter will work because it won't step down my voltage when the input is over 48V. I will continue looking into this and keep you updated.
From the looks of ...
- 88
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How to get constant motor RPM regardless of battery voltage?
If your only goal is a constant speed throughout the charge cycle of the battery, you could drop the voltage to something below the low end of the battery range. If you set the voltage at 3.7 V, you'...
- 31
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vote
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Powering multicopter with multiple dedicated batteries
I agree with lenik first statement, you idea is totally sound.
Also your grounding to not have all the current drained passing through a single 'hub' is sound as otherwise you will need this central ...
- 1,411
1
vote
Compatibility of my quadcopter build
1) you 4in1 ESC as 3 outputs per motor and 1 input per motor...
Your description of the brushless motor seems very confused. Brushless motor are commanded with 3 phases, theirs switching patterns ...
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