SG90 servo motor

Introduction

Datasheet

• Weight: 9 g

• Dimension: 22.2 x 11.8 x 31 mm approx. • Stall torque: 1.8 kgf·cm • Operating speed: 0.1 s/60 degree • Operating voltage: 4.8 V (~5V) • Dead band width: 10 μs • Temperature range: 0 ºC – 55 ºC Position "0" (1.5 ms pulse) is middle, "90" (~2ms pulse) is all the way to the left. ms pulse) is all the way to the right, ""-90" (~1ms pulse) is all the way to the left.

Sizes of servos

See https://servodatabase.com/servo/hobbyking/hk-5330

Micro (or Nano) Servo (SG90, MG90)

• ~23 × 12 × 24 mm³ (height × width × length), 8–12 g
• HobbyKing HK-5330S Ultra-Micro Digital Servo 0.17kg / 0.04sec / 1.9g
  • 20.1 × 6.1 × 13.0 mm³
• HK-5320 Ultra-Micro Digital Servo 0.075kg / 0.05sec / 1.7g
  • 20.8 x 15 x 11 mm³
• 1g servo https://duckduckgo.com/?t=ffab&q=1g+servo&atb=v365-1&ia=web

Standard Servo (MG885, DS3235)

• ~40 × 20 × 36 mm³ (height × width × length), 35–50 g

Giant (DS51150)

• ~60 × 30 × 57 mm³ (height × width × length), 90 g and up

Pololu makes small motors. See https://www.pololu.com/category/60/micro-metal-gearmotors . See also offset and foldback gearboxes.

STL files

https://www.thingiverse.com/thing:5149951