product description:

Red: pressure-wire

Brown: Ground lead

Orange:signal wire

Model: SG90

Technical data given by the manufacturers:

Size: 21.5mmX11.8mmX22.7mm

Weight: 9 grams

No-load speed: 0.12 seconds / 60 degrees (4.8V)

Stall torque of 1.2 - 1.4 kg / cm (4.8V)

Operating temperature: -30 to +60 degrees Celsius

Dead-set: 7 microseconds

Operating voltage: 4.8V-6V

The control of the steering gear generally requires a time base pulse of about 20 ms. The high level portion of the pulse is generally an angle control pulse portion in the range of 0.5 ms to 2.5 ms, with a total interval of 2 ms. Taking the 180 degree angle servo as an example, the corresponding control relationship is this:

    0.5ms--------------0 degrees;

    1.0ms------------45 degrees;

    1.5ms------------90 degrees;

    2.0ms-----------135 degrees;

    2.5ms-----------180 degrees;