Type, Firmware and Key parameters Of Quadcopter ESC
Before choosing the esc for quadcopter or FPV, you should know some ESC knowledges (Type, Firmware and Key parameters) as below.
A Brushed Motor has a rotating set of wound wire coils which acts as an electromagnet with two poles.
A Brushless Motor uses a permanent magnet external rotor, three phases of driving coils, one or more devices to sense the position of the rotor, and the associated drive electronics.
The output of the ESC line, brushed have two lines, brushless have three lines, connected to the motor;
Which type is the best?
As we know, most all of quadcopter esc is brushless, because of High efficiency, Higher speed range, no voltage drop across brushes.
The downside of brushless esc is that they are more expensive than most brushed types, however, the extra price is usually more than worthwhile as they will last MUCH longer.
For base on open source firmware, there are 3 main types of firmwares, which can be divided into blheli, simonk and kiss firmware.
I would personally go for Blheli. Why is it so? Well, considering how fast Blheli has undergone improvements, it has been able to beat simonk on the performance. However, Kiss beats them hand-down on performance!
Between simonk and Blheli, I previously would go for simonk but not anymore. Currently, I think Blheli is really undergoing revolutionary improvements on its features.
Although the difference in size between Blheli and kiss might not be that big, the difference is still a front leap for kiss firmware.
Key parameters of esc
Max Amp Rating
The maximum amperage an ESC can handle needs to be greater than the motor/prop combination will draw. If the amperage rating is not high enough, it could overheat and die.In terms of ESC, suggesting 20%-50% extra Amps is good rule to ensure your ESC do not burn out.
Voltage from battery
Make sure your ESCs the ability to withstand the voltage from the chosen battery. We assume that as we know our battery atleast 88A current. So here we will take ESC current is less 88A, maybe 60A is ok.
Although above is a personal opinion based on my experience, I believe that it is an opinion that is shared by a majority of quadcopter owners!