I am rebuilding a quadcopter with a wheelbase of 500mm. The flight controller is a MicoAir H743, and the ESC is a 4-in-1 model installed in the center of the frame. However, MicoAir recommends against using a 4-in-1 ESC, suggesting individual ESCs instead to prevent overheating. Is this true?
Why not 4in1, save space and weight. I fly 600mm quad with Matek H743 and 4in1 esc stacked without problems, not heat at all.
Thanks. I will try when the weather is good.
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A 4-in-1 ESC simplifies wiring and complexity and keeps the wire-length to battery short.
I’ve had good experiences with using 4-in-1 ESCs in similar sized copters and larger. The ESC should not get particularly hot if everything is sized accordingly.
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To keep the wires short from ESCs to battery and flight controller is important?
I am building a drone with a wheelbase of 1100mm. It seems no enough room to install ESCs at the body. I would like to install the ESC under the motor. The distance from ESC to FC is 500mm. Is that a good idea? The signal of ESC will be interference?
Thanks for your kindly help.
It’s best to keep the power supply wires from battery to ESCs as short as possible, and it does not matter so much about how long the motor wires are.
Yes - the signal wires are much more likely to pick up noise when they are longer.
All wires have to be a suitable gauge of course.
Ideally the signal wires would use a CAN bus or serial protocol like DSHOT rather than just PWM.
Plenty of commercially available motors and ESCs, and integrated sets (ESC inside the motor mount) require very long supply wires, and correspondingly long signal wires. This is basically the worst-case scenario and it’s a wonder they work as well as they do.
If you go down this path I would advise adding extra capacitors in the power supply wires as close to the ESC as possible. Also twist the signal wires.
Have a read through this too:
You are amazing! Thank you for your suggestion. These help me a lot!