About this item

The ELECROW Crowtail 9G Servo 2.0 is a micro servo motor based on the popular Tower Pro SG90, adapted to the Crowtail modular system. It delivers precise, smooth control over 180 degrees of rotation, making it a solid choice for robotics, small animatronics, remote control vehicles, and educational/demonstration robotics work. The “9G” designation comes from its approximate weight (9 grams) and compact size, which suits lightweight mechanisms and space‑constrained designs. The module includes all usual hardware: the servo itself, a Crowtail‑compatible cable, mounting servo horn(s), and screws so you can mount it directly on a frame. It takes a standard operating voltage around 4.8‑6.0V, meaning you’ll want a stable 5V supply for best response. Its control line uses standard PWM pulses (usually 50Hz or similar), so it’s compatible with Arduino, ESP32, Raspberry Pi (with appropriate driver), etc. Its dead band (i.e. the minimal pulse width increment needed to move) is about 5 microseconds, allowing for fine control. Although the torque is not high (≈1.6 kg·cm at 4.8V), it is sufficient for lightweight tasks like moving small levers, flaps, or robotic limbs in hobby builds. The temperature rating is decent (‑30°C to +60°C), so it works in a range of environments. Cable length is enough to reach from baseboards comfortably. Overall, the Crowtail 9G Servo 2.0 gives a reliable and affordable motion control option when you need modest torque, good duty cycle, and ease of integration.