Hi every one.
I'm a 16 year old student interested in electronics, therefore i wanted to do an arduino quadcopter kinda like this Sample Control Panel Code? - Programming Questions - Arduino Forum.
Because i'm student i don't have a large budget so i came up with 2 questions:
Is it possible to raise the voltage off this battery ?
i know that there's some dc-dc converters and etc, but no one that i saw could handle so much amperage (btw im thinking of using 3-4 of that batteries in parallel so i can have 20Ah).
PS: I will probly need around 10 Ah per motor.
The second question is were can i find a cheap (or even make one if that's even possible) transmitter and a receiver (or 2x tranceivers) were i can connect a camera (on the quadcopter) to transmit video and to send data too so i can for example control it with a ps2 controler for example.
You're shooting too high for a beginner. I know the quadcopter thing is intriguing, but trying to reinvent those wheels will frustrate you and drain your meager financial resources with little chance of success right off the bat.
You're at a cross-roads here:
Do you want to learn electronics? Then start at the beginning and build a few simple circuits. You'll quickly find out how much you don't know, which is the first step to learning. Just take it slow and take it a little bit at a time. If you start young, you have your entire life to become an expert. Many here aren't as lucky.
Do you just want a quadcopter? Then buy a kit you can afford and enjoy it. You can always mod it and learn about the parts and pieces along the way -- even replace them with home-built parts when you're ready for that.
Another piece of advice that you might not like at first: Forget about video for a while. High-bandwidth, long-range, omni-directional RF is not trivial, and not cheap. It's a problem many experienced enthusiasts struggle with. There's plenty of info on what can be done (usually expensive) and what can't. It's a very popular goal, so Google it and see what others have done.
Sorry for the cold shower, but you'll be happier in the long run with reasonable expectations. Good luck, and we hope to see you around.
The current levels off a LiPo battery like when powering a BLDC and ESC are high, beyond any reasonable boost converter - if you want more voltage you use more cells in series. There
are many many online resources about sizing up RC motor / prop / ESC/ LiPo combinations,
that's the place to look for this sort of information. There are also specialised resourced for
multicopter design and so forth - you can learn a lot by exploring (then decide if your
budget and experience match the task).
Yeh maybe you're right and i'm shooting too high so i'll leave this project for when i learn more about electronics.
Thx for both advices.
I would like to use batteries in other projects, there's any way of doing let's say a converter that can handle 3-5 Ah (with that battery) ?
At 5000mAh (or 5Ah) and a rating of 20C, your max current draw would be 100 amps. Always assume you are using your hardware to the limits when buying components, so even if you only draw 50 amps continuous, assume you need 100 amps (plus some wiggle room). So lets say we would need a DC-DC converter capable of taking in 3.7 volts at 110 amps. That is 407 watts of power. That's a lot! I'm not a DC-DC converter expert but I would find it hard to believe you could find a converter capable of handling that much power. And if you did it would likely be far to large to fit on most projects and would require a large and heavy heat sink as well.
(btw im thinking of using 3-4 of that batteries in parallel so i can have 20Ah).