Feetech HL-3615-C002 6V 2.5kg.cm 360° High-Speed TTL Serial Bus Servo

The Feetech HL-3615-C002 is a high-speed TTL serial bus smart servo. A coreless motor and 1:96 metal gearbox give 0.034 sec/60° (about 290 RPM) at 6V with 2.5kg.cm of stall torque, while a 12-bit magnetic encoder provides absolute 360° positioning. It suits fast robot arm joints, pan-tilt heads and research mechanisms where speed matters more than holding force.

Key features

• 12-bit magnetic encoder: 4096 steps across 360° (0.088° resolution)
• More output at 7.4V: 3.5kg.cm stall torque and 0.027 sec/60°
• Real-time feedback on position, speed, load, input voltage, current and temperature
• Overload, overvoltage and overheat protection
• Backlash of 0.5° or less, ball bearings and an aluminium case

Specifications

• Stall torque: 2.5kg.cm at 6V, 3.5kg.cm at 7.4V
• Rated torque: 0.8kg.cm at 6V
• No-load speed: 0.034 sec/60° (290 RPM) at 6V
• Operating voltage: 6V nominal, 5–8.4V range
• Stall current: 1.6A at 6V
• Rated current: 500mA
• Range: 360° (0–4095), 0.088° resolution
• Protocol: Half-duplex asynchronous serial (TTL), PID control
• Baud rate: 38400bps–1Mbps
• ID range: 0–253
• Gears: Metal, 1:96 ratio
• Motor: Coreless
• Bearings: Ball bearings
• Case: Aluminium
• Output spline: 25T, 4.95mm OD (M2.5 x 6 horn screw)
• Connector: PH1.25 3-pin
• Dimensions: 34 x 20 x 23mm
• Weight: 35.8g (±2g)
• Lead length: 150mm or 200mm
• Operating temperature: -10 to 60°C

Like other Feetech serial bus servos it takes digital packets, not PWM: run it from a bus servo adapter or a half-duplex microcontroller UART, and give each servo a unique ID before chaining them.