The Futaba S3003 DC Servo Motor

Today Mr Khow and I went to Vanguard in KL to buy 4 pieces of DC Servo Motor for RM280. Mr Robin from Vanguard and his friend Mr Wong did some demonstrations of their Bioloid robot stuff together with some ready made robotic hardwares. This is how the servos looks like.

As advised by Mr Wong this servo requires a (Pulse Width Modulation) PWM signal in order to be activated. The timing for PWM should be less than 100 ms. This means that I need to supply my PWM signal on my own- required a scope for signal checking. Yet another, he said the best way is to use the microprocessor to supply the signal of PWM. However, the easy way is to buy his readymade servo controller board that cost hundred plus for beginner version and three hundred plus for higher version.

One disadvantage of using this servo is that it doesn't have a feedback signal telling the location of the specified movement. The new and updated version of servo which cost RM350 each is capbale of doing so and can be link by network of 4 lines only.

Manufacturer Specs
This is the Futaba S3003 Standard Servo. This basic servo is used in cars, boats, or where standard servos are used. This is the replacement for the following servos, S138,S148,S22,S38 and S12.

This servo can produce high-current draw from your batteries. If using NiMH or LiPo batteries, make sure they are capable of delivering sufficient amps.

INCLUDES: One S3003 standard servo with preinstalled round servo horn FUTM00311 Four brass eyelets Four black rectangular rubber grommets (FUTM2348) Four servo mount screws One servo wheel 1-3/8" (35mm) in diameter One X shape servo arm 1.5" (38mm) across One star shaped arm 1-1/4" (32mm) across

SPECS: Speed: 0.23sec/60 deg @ 4.8V or 0.16 sec/60 deg @ 6V. Torque: 44 oz-in @ 4.8V or 56.8 oz-in @ 6V (3.2 kg-cm @ 4.8V or 4.1 kg-cm @ 6V) Size: 1.6"L x .8"W x 1.4"H (41x20x36mm) w/o output shaft Weight: 1.3 oz (37.2g) Connector: "J" type with approx. 5" lead