Hey, recently i've been designing a custom pcb that should control ten 9g servos.
I am kinda new to electrical engineering and power management stuff so i don't know how to design the power system.
I am using a 3s lipo batt but i don't know for example witch voltage regulator should i use...
Any help will be appreciated.
You need to privide more details, at least what servos and their peak and running currents are.
The 9G or SG90 draws about 650mA stall at 5volt,
so your 5volt supply should be able to deliver 10*0.65 = 6.5Amp.
You might be able to get away with two LM2596-type buck converters (one per 5 servos) if you attach the servos staggered.
Custom board? I would just have used a 16-channel PCA9685 breakout board.
Leo..
For 10 SG90 servos, plan on 4.8 to 6V, 7 Amperes, minimum. More current is better, of course.
The "custom PCB" will need wide traces and large solder pads to carry that current, so carefully research and follow the recommendations for high current PCB layout.
Thank you for reaching out. I wanna make a custom pcb because I need to connect some other devices like a gyroscope and a radio and also to get some experience.
If my calculations are correct the total consumptions should be around 8,5A so I should probably use a 9A regulator or even a 10A.
I would be very glad if you could suggest my a regulator that can provide that mutch current.
Luca.
Not with servos.
If you are confusing Volts and Amperes, you are headed for serious trouble.
Sorry, i misswrote
The best thing you can do is to take a spreadsheet program and make an energy balance of current and voltage for all components.
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