What size is the servo horn/arm?

There are three arms provided with each servo. Two double arms approx 1 1/4" overall length (one has 2 additional small arms as per the picture) and one single arm approx 3/4" overall length

Will these handle signals between 800 and 2200 microseconds? When I use a test box they get very jittery above 2000 microseconds.

Dear, thank you for your question. The jitter is caused by the unstable analog signal power supply. It is recommended to use 600-2400 pulse width. I hope it can help you

There are three wire leads on the servo. Assuming the black wire is the ground which is the power lead, red or orange?

Red is power, yellow is the PWM.

Will these connectors fit a Spektrum SR515 receiver

These servos have a standard 3 pin connector without a tab that fit Futaba, JR, and Hitec receivers. If you receiver has standard 3 pin connections they should work.

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Sg90 9g Micro Servo Motor, Miuzei Mini Small Servos for Arduino RC Car DIY Airplane Robot Helicopter Boat (5 Pcs)

Product ID: 123819006

Details

Brand
Miuzei
Manufacturer
Miuzei
Material
Metal
Model Name
sg90 9g servo
Number of Items
5

⚡0.08 sec/60° ultra-fast response

💪1.4 kg/cm stall torque power

🔄180° precise rotation angle

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Description

⚙️ Micro power, mega impact – upgrade your DIY game now!

POWERFUL TORQUE - Deliver 1.4 kg/cm stall torque to handle demanding RC and DIY projects effortlessly.
FULL 180 SWEEP - Achieve smooth, accurate movements with a wide rotation range perfect for complex robotics.
COMPACT YET DURABLE - Mini metal build ensures lightweight design without compromising on long-lasting performance.
LIGHTNING FAST PRECISION - Experience near-instant 0.08 sec/60° speed for ultra-responsive control.
PLUG PLAY COMPATIBILITY - Seamlessly integrates with Arduino, Raspberry Pi, JR, and Futaba interfaces for versatile builds.

The Miuzei SG90 9g Micro Servo Motor is a compact, high-performance analog servo designed for precision control in RC cars, drones, robots, and DIY electronics. Featuring a rapid 0.08-second rotation speed at 6V, a full 180° sweep, and a robust 1.4 kg/cm stall torque, it offers reliable power and accuracy. Compatible with popular platforms like Arduino and Raspberry Pi, this mini metal servo is perfect for professionals and hobbyists aiming to build next-level projects with seamless integration and durable performance.

Specifications

ASIN	B07NSVKZP7
Best Sellers Rank	#15,790 in Toys & Games ( See Top 100 in Toys & Games ) #3 in RC Servos
Brand Name	Miuzei
Customer Reviews	4.6 4.6 out of 5 stars (1,115)
Included Components	sg90 servo motor
Manufacturer	Miuzei
Material Type	Metal
Model	sg90 servo
Model Name	sg90 9g servo
Part Number	sg90
UPC	657390343417

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