Flyermate Servos

Flyermate A3.7 Servo specifications

Weight: 3.7g - 0.1305oz
Operating Speed: 0.12sec/60 degree (4.8v) - 0.10sec/60 degree (6v)
Stall Torque: 0.3kg/cm - 4.2ozin (4.8v) - 0.4kg/cm - 5.6ozin (6.0v)
Operating Voltage: 4.8v - 6.0v
Dimension: 20.0 x 17.6 x 8.0 (mm) - 0.79 x 0.7 x 0.35 (inch)

 

Flyermate A6.0 Servo specifications

Weight: 6g - 0.2116oz
Operating Speed: 0.12sec/60 degree (4.8v) - 0.10sec/60 degre e(6v)
Stall Torque: 1.2kg/cm - 17ozin (4.8v) - 1.8kg/cm - 25ozin (6.0v)
Operating Voltage: 4.8v - 6.0v
Dimension :22 x 20 x 12.5(mm) - 0.87 x 0.79 x 0.5 (inch)

 

Flyermate D55.0 Genuine Digital Servo specifications

Operating Angle: 180degree
Gear Material: Bronze
Weight: 55.0g
Operating speed: 0.15sec/60 degree(4.8v) - 0.13sec/60 degree(6.0v)
Stall torque: 8.8kg/cm - 122 ozin (4.8v) - 10kg/cm - 139ozin (6.0v)
Operating Voltage: 4.8v - 6.0v
Operating Current: 1~3A
Wire Length: 30.6cm
Dimension: 41.0 x 20.5 x 41.5(mm) - 1.6 x 0.81 x 1.63 (inch)

Advantages of a Digital Servo

Higher resolution - less dead band, more accurate positioning
Faster control response - increased acceleration
Constant torque throughout the servo travel
Increased holding power when stationary

The "Analog Servo" has custom Logic chip and timing components
The "Digital Servo" has a microprocessor, FET amplifier.

Analog servos have been around for quite some time, servos work by sending pulses of power to the servo motor. Digital servos have significant operational advantages over analog servos, but with these advantages also come minor disadvantages.

Digital servos have similar motors, gears and cases to analog servos however; the difference between them is in the controlling circuit. Digital Servos have a Quartz crystal controlled microprocessor, FET amplifier, which improves the performance of servos.

Where a digital servo differs, is in the way it processes the incoming receiver information, and in turn controls the initial power to the servo motor. Due to a small microprocessor, the pulses sent to the servo's motor can be tailored which means that the range of motion can be broken down into a much finer pattern. Since more pulses are being sent, the servo is more responsive and contains significantly less dead band. This also means that the power sent to control the motor can be adjusted by the microprocessor to ensure a good holding power. An analogue servo typically receives 50 pulses of information per second while the digital servo receives 300. This ensures a faster response and smoother acceleration.

The disadvantage of a digital servo is the power consumption.