20-Channel Servo Controller (ESP32-S3)
Multifunction PWM servo controller with 20 PWM channels, 6 TTL bus servo ports and a built-in web configurator — built for robots, robot arms and bionic quadrupeds.
- Material
- PCB & power electronics
- Age range
- 8+
- Category
- STEM Robotics & Electronics
- Customisation
- OEM & ODM available
Specifications, component counts and packaging are configurable. Figures shown reflect our standard configuration.
Key features
- ESP32-S3 main control with 20 PWM servo ports plus 6 TTL bus servo channels, driving both PWM and serial bus servos directly.
- Built-in web server: servo calibration, position debugging, motion-frame editing and action-group management all run in a browser — no extra software to install.
- I2C slave communication lets Arduino, STM32 and other hosts call the controller over the I2C bus to run servo moves and stored action groups.
- Works with Arduino, Mind+ and Mixly; OTA wireless firmware updates with dual-partition auto-rollback for safe upgrades.
- Two versions: standard (5V 4A / 7.4V 6A, 18650 2S1P 2600 mAh) for small robots and classroom experiments, and high-power (5V 4A / 7.4V 16A, 18650 2S2P 5200 mAh) for high-torque, high-load projects; both run on 7.4-8.4 V lithium batteries with undervoltage, over-charge and over-discharge protection.
Frequently asked about this product
What does the 20-Channel Servo Controller (ESP32-S3) need for power and control?
The 20-Channel Servo Controller (ESP32-S3) is driven from the mainboard through a standard header or terminal connection; motor/logic supply (5-12 V depending on load) goes in through the dedicated power input, and the logic side runs at 3.3-5 V. LED indicators show channel status, and the module is protected against reverse connection.
What voltage does the 20-Channel Servo Controller (ESP32-S3) run on?
The 20-Channel Servo Controller (ESP32-S3) has separate logic and load supplies: the logic side takes 3.3-5 V from the controller, while motors or high-current outputs are fed from their own 5-12 V supply through the dedicated power terminal. Never power the load side from the controller’s 5 V pin.
What projects is the 20-Channel Servo Controller (ESP32-S3) good for?
The 20-Channel Servo Controller (ESP32-S3) is built for STEM and robotics education: classroom demonstrations, science-fair projects, robotics club builds and competition robots. It pairs with the rest of our module range — same connectors, same voltage, same toolchain — so students move from first circuit to competition robot without changing platforms.
What certification do the robotics and electronics products carry?
Controller boards, sensors and modules ship with CE marking and RoHS-compliant components, and the range is designed for classroom use under teacher supervision. Product-specific test reports and declarations of conformity are available for distributors on request.
What is the minimum order quantity, and can I get a sample first?
These are standard catalogue lines with stable production, so minimums are low and lead times are short. Samples ship within about a week and are normally credited against a first order. Mixed-SKU cartons are accepted for evaluation orders.
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Need pricing on this line?
Send your target quantity, destination market and any changes you need to artwork, colourway or packaging. We reply with a quotation and the applicable compliance route — usually within one working day.