Emax Es08ma Ii Datasheet -

| Parameter | Value | | :--- | :--- | | Operating Voltage | 4.8V – 6.0V (4.8V nominal, 6.0V max recommended) | | Stall Torque | 2.0 kg·cm @ 4.8V / 2.5 kg·cm @ 6.0V | | Speed | 0.12 sec/60° @ 4.8V / 0.10 sec/60° @ 6.0V (no load) | | Dead Band Width | ≤ 5 µs (typical) | | Rotation Angle | 180° (approx. 1200–1800 µs PWM; 90° per side typical) | | Connector | JR/Futaba type (3-pin 0.1" spacing) | | Wire Gauge | 28 AWG, ~150mm length | | Dimensions | 23 x 12.2 x 27 mm (L x W x H) | | Weight | ~12.8g ± 0.5g |

| Wire Color | Function | |------------|----------| | Brown (or Black) | Ground (GND) | | Red | Positive (+4.8–6.0V) | | Orange (or Yellow) | PWM Signal (50 Hz) |

Test conditions: 4.8V and 6.0V at 25°C ambient temperature.

| Parameter | 4.8V Performance | 6.0V Performance | | :--- | :--- | :--- | | Stall Torque | 1.6 kg·cm (22.2 oz·in) | 2.0 kg·cm (27.8 oz·in) | | Speed (no load) | 0.10 sec/60° | 0.08 sec/60° | | Running Current (no load) | 180 – 220 mA | 220 – 280 mA | | Stall Current (peak) | 700 – 800 mA | 800 – 1000 mA | | Temperature Rise (stall) | ~30°C in 5 sec | ~40°C in 5 sec | Emax Es08ma Ii Datasheet

Operating Angle Range: 180° nominal (approx. 210° mechanical limit)

Even a robust metal-gear servo can fail. Here is how to interpret the datasheet to prevent disasters.

#include <Servo.h>
Servo myServo;
void setup() 
myServo.attach(9); // Signal on pin 9
// The Servo library automatically uses 5-10 microsecond dead band

void loop() 
myServo.write(0);   // 1.0ms pulse (CCW)
delay(1000);
myServo.write(90);  // 1.5ms pulse (Center)
delay(1000);
myServo.write(180); // 2.0ms pulse (CW)
delay(1000);

No datasheet is complete without the dimensional diagram. While we cannot embed an image here, the critical physical measurements are:

Before diving into pinouts and timing diagrams, here are the headline specifications that define the ES08MA II. Note that "II" denotes the second generation, which features improved potentiometer linearity and a more robust control IC compared to the original ES08MA.

| Parameter | Value | |-----------|-------| | Model | Emax ES08MA II | | Type | Micro Analog Servo | | Gear Material | Metal (Brass & Aluminum combination) | | Weight | 12.5g ± 0.2g | | Dimensions | 23 x 12.2 x 24 mm (0.91 x 0.48 x 0.94 in) | | Operating Voltage | 4.8V to 6.0V (6.0V recommended for max torque) | | Stall Torque (4.8V) | 1.6 kg·cm (22.2 oz·in) | | Stall Torque (6.0V) | 2.0 kg·cm (27.7 oz·in) | | Operating Speed (4.8V) | 0.12 sec/60° | | Operating Speed (6.0V) | 0.10 sec/60° | | Dead Band Width | ≤5 μs | | Temperature Range | -20°C to +60°C | | Connector Type | JR (Futaba compatible – 3-pin 0.1” spacing) | | Wire Length | 250 mm ±10 mm | | Parameter | Value | | :--- |

Critical Upgrade from ES08MA I: The "II" version uses a dual-ball bearing system on the output shaft, drastically reducing gear backlash and play over time.