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Parallax 900-00005 / 900-00008 Servo
The Parallax 900-00005 and 900-00008 servos are compact, high-torque rotational actuators designed for robotics, automation, and embedded systems requiring precise angular positioning. These servos are extensively used by roboticists, embedded systems engineers, and hobbyists who need reliable motion control with minimal power consumption and straightforward pulse-width modulation (PWM) control. These servos solve the critical challenge of converting electrical signals into controlled mechanical motion while maintaining accuracy and repeatability in demanding applications.
Product Overview
The Parallax servo operates on the principle of closed-loop feedback control, where an integrated potentiometer measures the shaft position and compares it against the incoming PWM signal. The internal circuitry continuously adjusts motor voltage to drive the shaft to the commanded angle, typically achieving positioning within 10 degrees of the target. This self-correcting mechanism eliminates the need for external feedback sensors, making these servos ideal for applications where space and cost constraints are critical. The servo accepts standard RC-style PWM signals with pulse widths ranging from 500 microseconds to 2500 microseconds, corresponding to 0 to 180 degrees of rotation.
The 900-00005 standard servo and 900-00008 continuous rotation variant represent two distinct operational modes within the same mechanical form factor. The standard model provides angular positioning control suitable for steering mechanisms and robotic limbs, while the continuous rotation model eliminates the mechanical stops and allows full 360-degree rotation at variable speeds, making it perfect for wheel drive applications and continuous motion requirements. Both models feature metal geartrains for enhanced durability, sealed bearing systems to prevent debris ingress, and operating voltages between 4.8 and 6 volts, providing flexibility in battery selection for mobile robotics platforms.
Key Specifications
| Specification | Details |
| Product Type | Standard and Continuous Rotation Servo Motor |
| Brand | Parallax Inc. |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Operating Voltage | 4.8V to 6.0V DC |
| Torque Output | 42 oz-in at 5V nominal |
| Speed (Standard) | 0.19 seconds per 60 degrees at 5V |
| Speed (Continuous) | Variable 0-60 RPM based on PWM signal |
| Control Signal | PWM 500-2500 microseconds pulse width |
| Dimensions | 40.6 x 19.8 x 36.8 mm |
| Weight | Approximately 42 grams |
Key Features
- Integrated feedback potentiometer providing closed-loop position control without external sensors, ensuring repeatable accuracy within 10 degrees across multiple actuation cycles
- Metal gearbox construction with sealed bearings delivering 42 oz-in of torque while maintaining mechanical reliability in continuous operation environments
- Standard RC PWM control interface compatible with microcontroller outputs from Arduino, BASIC Stamp, and Raspberry Pi platforms without additional signal conditioning
- Dual model availability with 900-00005 standard positioning servo and 900-00008 continuous rotation variant enabling single-source procurement for mixed-motion robotic systems
- Wide operating voltage range from 4.8V to 6.0V providing compatibility with standard 5-cell NiMH battery packs and regulated power supplies in mobile platforms
Applications and Use Cases
- Robotic arm joint actuation where the 900-00005 standard servo provides precise angular positioning for multi-degree-of-freedom manipulators in pick-and-place automation systems
- Autonomous vehicle steering control utilizing the standard servo to modulate front wheel angles in line-following robots and competition robotics platforms
- Mobile robot locomotion with the 900-00008 continuous rotation servo driving wheel pairs at variable speeds for differential drive navigation and obstacle avoidance behaviors
- Camera pan-tilt mechanisms where dual servos provide two-axis gimbal control for surveillance drones, aerial photography platforms, and automated vision tracking systems
- Industrial automation applications including conveyor diverters, robotic grippers, and automated gate controls requiring reliable repetitive motion in harsh environments
How to Use
To implement the Parallax servo in your project, begin by connecting the three-wire servo cable to your control circuit: the red wire to positive supply voltage (4.8-6.0V), the black wire to ground, and the white or yellow signal wire to a PWM-capable output pin on your microcontroller. For Arduino platforms, use the Servo library which automatically handles PWM signal generation; simply declare a servo object, attach it to your pin, and command angles from 0 to 180 degrees using the write() function. The servo internally monitors the feedback potentiometer and adjusts motor current to reach the commanded position, typically settling within 500 milliseconds.
For the continuous rotation variant (900-00008), use the same connection methodology but interpret the PWM signal as a speed command rather than an angle: 1500 microseconds (90 degrees in standard terminology) represents stopped, values below 1500 microseconds produce counterclockwise rotation with speed proportional to deviation, and values above 1500 microseconds produce clockwise rotation. Always ensure your power supply can deliver adequate current; each servo draws approximately 500 milliamps during stall conditions, so battery sizing should account for simultaneous actuation of multiple servos. Implement software debouncing and command rate limiting to prevent mechanical shock from rapid sequential commands, particularly when driving heavy loads or operating near torque limits.
Frequently Asked Questions
What is the difference between the 900-00005 and 900-00008 servo models?
The 900-00005 is a standard servo with mechanical stops limiting rotation to approximately 180 degrees, providing absolute position control ideal for steering and articulation. The 900-00008 is a continuous rotation servo with the mechanical stops removed, allowing full 360-degree rotation at variable speeds controlled by PWM pulse width, making it suitable for wheel drive and continuous motion applications. Both share identical mechanical form factors and electrical interfaces, allowing them to be used interchangeably in mixed-motion systems.
Can I operate multiple Parallax servos from a single microcontroller?
Yes, you can control multiple servos from a single microcontroller using separate PWM output pins. However, ensure your power supply provides sufficient current for simultaneous actuation of all servos, as each servo draws 500+ milliamps during stall. Use a dedicated servo power supply separate from microcontroller power to prevent voltage sag that could cause microcontroller resets. The Arduino Servo library supports up to 12 servos on most boards, with pin limitations depending on your specific microcontroller variant.
What PWM signal range should I use for precise positioning?
The Parallax servo responds to PWM pulse widths from 500 to 2500 microseconds, with 1500 microseconds representing the neutral center position (90 degrees). For maximum accuracy, calibrate your specific servo by sending 1500 microseconds and mechanically noting the neutral point, as manufacturing tolerances may shift this value by 20-50 microseconds. Use the full 500-2500 microsecond range for complete 0-180 degree travel, but avoid commanding beyond these limits as the servo will simply stall at the mechanical end-stops without providing feedback of the over-command condition.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Parallax 900-00005 / 900-00008 Servo Online in India
Purchase the Parallax 900-00005 / 900-00008 Servo online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Parallax 900-00005 / 900-00008 Servo with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.
Parallax 900-00005 / 900-00008 Servo
The Parallax 900-00005 and 900-00008 servos are compact, high-torque rotational actuators designed for robotics, automation, and embedded systems requiring precise angular positioning. These servos are extensively used by roboticists, embedded systems engineers, and hobbyists who need reliable motion control with minimal power consumption and straightforward pulse-width modulation (PWM) control. These servos solve the critical challenge of converting electrical signals into controlled mechanical motion while maintaining accuracy and repeatability in demanding applications.
Product Overview
The Parallax servo operates on the principle of closed-loop feedback control, where an integrated potentiometer measures the shaft position and compares it against the incoming PWM signal. The internal circuitry continuously adjusts motor voltage to drive the shaft to the commanded angle, typically achieving positioning within 10 degrees of the target. This self-correcting mechanism eliminates the need for external feedback sensors, making these servos ideal for applications where space and cost constraints are critical. The servo accepts standard RC-style PWM signals with pulse widths ranging from 500 microseconds to 2500 microseconds, corresponding to 0 to 180 degrees of rotation.
The 900-00005 standard servo and 900-00008 continuous rotation variant represent two distinct operational modes within the same mechanical form factor. The standard model provides angular positioning control suitable for steering mechanisms and robotic limbs, while the continuous rotation model eliminates the mechanical stops and allows full 360-degree rotation at variable speeds, making it perfect for wheel drive applications and continuous motion requirements. Both models feature metal geartrains for enhanced durability, sealed bearing systems to prevent debris ingress, and operating voltages between 4.8 and 6 volts, providing flexibility in battery selection for mobile robotics platforms.
Key Specifications
| Specification | Details |
| Product Type | Standard and Continuous Rotation Servo Motor |
| Brand | Parallax Inc. |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Operating Voltage | 4.8V to 6.0V DC |
| Torque Output | 42 oz-in at 5V nominal |
| Speed (Standard) | 0.19 seconds per 60 degrees at 5V |
| Speed (Continuous) | Variable 0-60 RPM based on PWM signal |
| Control Signal | PWM 500-2500 microseconds pulse width |
| Dimensions | 40.6 x 19.8 x 36.8 mm |
| Weight | Approximately 42 grams |
Key Features
- Integrated feedback potentiometer providing closed-loop position control without external sensors, ensuring repeatable accuracy within 10 degrees across multiple actuation cycles
- Metal gearbox construction with sealed bearings delivering 42 oz-in of torque while maintaining mechanical reliability in continuous operation environments
- Standard RC PWM control interface compatible with microcontroller outputs from Arduino, BASIC Stamp, and Raspberry Pi platforms without additional signal conditioning
- Dual model availability with 900-00005 standard positioning servo and 900-00008 continuous rotation variant enabling single-source procurement for mixed-motion robotic systems
- Wide operating voltage range from 4.8V to 6.0V providing compatibility with standard 5-cell NiMH battery packs and regulated power supplies in mobile platforms
Applications and Use Cases
- Robotic arm joint actuation where the 900-00005 standard servo provides precise angular positioning for multi-degree-of-freedom manipulators in pick-and-place automation systems
- Autonomous vehicle steering control utilizing the standard servo to modulate front wheel angles in line-following robots and competition robotics platforms
- Mobile robot locomotion with the 900-00008 continuous rotation servo driving wheel pairs at variable speeds for differential drive navigation and obstacle avoidance behaviors
- Camera pan-tilt mechanisms where dual servos provide two-axis gimbal control for surveillance drones, aerial photography platforms, and automated vision tracking systems
- Industrial automation applications including conveyor diverters, robotic grippers, and automated gate controls requiring reliable repetitive motion in harsh environments
How to Use
To implement the Parallax servo in your project, begin by connecting the three-wire servo cable to your control circuit: the red wire to positive supply voltage (4.8-6.0V), the black wire to ground, and the white or yellow signal wire to a PWM-capable output pin on your microcontroller. For Arduino platforms, use the Servo library which automatically handles PWM signal generation; simply declare a servo object, attach it to your pin, and command angles from 0 to 180 degrees using the write() function. The servo internally monitors the feedback potentiometer and adjusts motor current to reach the commanded position, typically settling within 500 milliseconds.
For the continuous rotation variant (900-00008), use the same connection methodology but interpret the PWM signal as a speed command rather than an angle: 1500 microseconds (90 degrees in standard terminology) represents stopped, values below 1500 microseconds produce counterclockwise rotation with speed proportional to deviation, and values above 1500 microseconds produce clockwise rotation. Always ensure your power supply can deliver adequate current; each servo draws approximately 500 milliamps during stall conditions, so battery sizing should account for simultaneous actuation of multiple servos. Implement software debouncing and command rate limiting to prevent mechanical shock from rapid sequential commands, particularly when driving heavy loads or operating near torque limits.
Frequently Asked Questions
What is the difference between the 900-00005 and 900-00008 servo models?
The 900-00005 is a standard servo with mechanical stops limiting rotation to approximately 180 degrees, providing absolute position control ideal for steering and articulation. The 900-00008 is a continuous rotation servo with the mechanical stops removed, allowing full 360-degree rotation at variable speeds controlled by PWM pulse width, making it suitable for wheel drive and continuous motion applications. Both share identical mechanical form factors and electrical interfaces, allowing them to be used interchangeably in mixed-motion systems.
Can I operate multiple Parallax servos from a single microcontroller?
Yes, you can control multiple servos from a single microcontroller using separate PWM output pins. However, ensure your power supply provides sufficient current for simultaneous actuation of all servos, as each servo draws 500+ milliamps during stall. Use a dedicated servo power supply separate from microcontroller power to prevent voltage sag that could cause microcontroller resets. The Arduino Servo library supports up to 12 servos on most boards, with pin limitations depending on your specific microcontroller variant.
What PWM signal range should I use for precise positioning?
The Parallax servo responds to PWM pulse widths from 500 to 2500 microseconds, with 1500 microseconds representing the neutral center position (90 degrees). For maximum accuracy, calibrate your specific servo by sending 1500 microseconds and mechanically noting the neutral point, as manufacturing tolerances may shift this value by 20-50 microseconds. Use the full 500-2500 microsecond range for complete 0-180 degree travel, but avoid commanding beyond these limits as the servo will simply stall at the mechanical end-stops without providing feedback of the over-command condition.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Parallax 900-00005 / 900-00008 Servo Online in India
Purchase the Parallax 900-00005 / 900-00008 Servo online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Parallax 900-00005 / 900-00008 Servo with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.