Geekstory Feetech STS3215 7.4V 19KG Dual Axis TTL Serial Servo 360° Continuous Rotation Metal Gear 12Bits Magnetic Coding Programmable Servo for Arduino Robotic Arm Smart Robot

• HIGH-TORQUE PERFORMANCE: Delivers 19.5kg.cm peak stall torque at 7.4V with 52RPM speed, ideal for robotic arms and heavy-duty RC models requiring powerful motion control
• FLEXIBLE SERIAL BUS CONTROL: Supports TTL serial communication with daisy-chaining for up to 254 devices, compatible with Arduino and Raspberry Pi for seamless integration
• INDUSTRIAL-GRADE TORQUE: Achieves 19kg.cm rated torque with PID control for precise positioning in automation equipment and small torque drive systems, ensuring stable performance
• COMPACT ROBUST CONSTRUCTION: Built with copper alloy gears, sealed bearings, and overload/overcurrent protection, enduring 100,000 cycles for reliable operation in harsh environments
• MULTI-MODE OPERATION: Features 360° continuous rotation with position control, closed-loop speed regulation, and stepping motor emulation for versatile industrial and hobbyist projects

Product description Product Name：7.4V 19KG.CM STS3215 Double shaft TTL Serial Bus Servo Appearance size：45.2X24.7X35mm Stall Torque：19.5kg.cm@7.4V Stall Speed：52RPM@7.4V Feedback: load / position / speed / voltage / current / temperature Electronic protection: overheat / overcurrent / overvoltage / overload protection Structural Features: The shell adopts engineering plastic shell with higher strength，Optimize the center distance，More compact overall structure， The servo gear adopts 1:345 copper Gear combination，higher torque；At the same Torque，compare with the standrd servo size，it looks lower profile（5mm），The body adopts double axis structure design，The structural characteristics of the circle lined solid，Wiring mode of double outgoing cables with metal Principal deputy servo horns，It is suitable for application in quadruped robot, snake robot, desktop robot, humanoid robot and mechanical arm. Electronic control Function: 1.Acceleration start stop function: speed and acceleration value can be set, motion effect is more gentle. 2.High precision, 360 degree absolute position 4096 bit precision, the highest position resolution is 0.088 degrees, if the control is 90 degrees, input 4096 / 360 * 90 = 1024, if the control is 180 degrees, input 4096 / 360 * 180 = 2048, so as to calculate. 3.There are four working mode switching (mode 0 position servo, mode 1 speed closed-loop, mode 2 speed open-loop, mode 3 step servo). 1)、Mode 0：Location mode, the default mode. In this mode, 360 degree absolute angle control can be realized. Support acceleration movement. 2)、Mode 1：Speed closed-loop, in the programming interface, the operation mode is set to 1, switch to speed closed-loop mode, and enter the corresponding speed in the speed column to run. 3)、Mode 2：Speed open-loop, in the programming interface, the operation mode is set to 2, switch to speed open-loop mode, and enter the corresponding time in the time column to run. 4)、Mode3：Step mode: in the programming interface, the maximum / minimum angle limit is set to 0, and the operation mode is set to 3. Switch to step mode. Enter the position in the position bar to step towards the target position. Click the position again to continue to step in the same direction. 4、Multi turn mode, 360 degree absolute control and feedback, under the highest accuracy, the absolute position control can be plus or minus 7 turns, but the number of power cycles is not saved, only the absolute position feedback value is retained. 5、One key calibration, 360 degree angle installation at any position, (40 (decimal) address input 128 (decimal)) one key correction current position is the middle (2048 (decimal)). 6、TTL communication level, half duplex asynchronous communication, bus protocol support to adjust read and write parameters, and add synchronous read function (send an instruction to receive the read back instruction from each servo on the bus in turn.) 7、Multiple protections, (overload, overcurrent, overvoltage, overheating, switch setting, condition parameter changing) 1)、Overload protection: through position detection, during the movement from the starting position to the target position, when the current position is detected to be not the target position after encountering the blocking of obstacles, the unloading force lasts for 2S (20% of the default blocking force). Until a new command is triggered, Release protection 2)、Overcurrent protection: through the set current value, check whether the current reaches the set current value. When it reaches the set current value, release the force (the default torque is 0). Until a new command is triggered, Release protection 3)、Over voltage protection: detect the current voltage value. If it exceeds the set voltage value, the alarm will display over-voltage. 4)、Overheat protection: detect the current motor temperature. If the temperature exceeds the set value, the alarm will display overheat. 8: Multiple feedback: 1)Load feedback: the current control output drives the voltage duty cycle of the motor, and the full scale is 1000 = 100% torque output. 2)Current feedback: The servo working current, 1 = 6.5mA 3)Voltage feedback: The servo working voltage,70=7V，0.1V 4)Temperature feedback: internal working temperature of current servo(measuring temperature) 5)Speed feedback: feedback the speed of current motor rotation, and the number of steps in unit time (per second) 50steps/second=0.732RPM 1 step=0.088° 88 °/second=1000 steps/second=About 15RPM 1RPM=6°/second 0.1Sec/60°=10/0.10RPM=100RPM Safety Warning No