Feetech FT1117M-FB 6V 3.5kg.cm Metal Gear Mini Servo with Feedback

The Feetech FT1117M-FB is a compact mini servo, between micro and standard size, with a fourth (green) wire that outputs the voltage of its internal carbon-film position potentiometer. Reading it on an ADC lets your controller confirm the output reached its target, detect a blocked joint or run its own position loop, making it a good fit for small robot arms, grippers and legged robots.

Key features

• 3.5 kg.cm stall torque at 6V (3 kg.cm at 4.8V) and 0.85 kg.cm rated
• Metal gears after a plastic motor pinion, 1:253.9 reduction
• 25T output spline, the same as standard-size servos, so standard horns fit
• Wide 3.5-8.4V input range
• Feedback falls from about 3.08V at 700 µs through 1.60V at 1500 µs to 0.12V at 2300 µs

Specifications

• Input voltage: 3.5-8.4V (rated at 6V)
• Stall torque: 3 kg.cm at 4.8V, 3.5 kg.cm at 6V
• Rated torque: 0.85 kg.cm at 6V
• Speed: 0.107 s/60° at 6V (no load)
• Current at 6V: 60 mA no load, 300 mA rated, 0.95 A stall
• Travel: 160° (700-2300 µs), neutral 1500 µs
• Feedback output: 3.08V at 700 µs, 1.60V at 1500 µs, 0.12V at 2300 µs
• Gears: metal, 1:253.9 ratio, no ball bearing
• Case: PC + ABS
• Lead length: 200 mm
• Dimensions: 12 x 29.7 x 31.5 mm
• Weight: 20.5 g
• Operating temperature: -10 to 60°C