{"product_id":"yahboom-8ch-pwm-servo-controller","title":"Yahboom 8-Channel PWM Servo Control Debugging Board, 5-8.4V Knob Tester for DIY Robotics","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eYahboom 8-channel PWM servo control debugging board is a plug-and-play servo controller for DIY smart robotics. It provides 8-channel independent servo interfaces for debugging\/testing servos powered from 5V–8.4V, with on-board knobs and buttons for control (no code required). The board uses an STC8G2K64S4 chip and high-precision potentiometers, and supports both manual adjustment and servo centering.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e8-channel independent servo interface with 8 high-precision potentiometers (one-to-one synchronous control).\u003c\/li\u003e\n\u003cli\u003eNo programming required; control servos using the adjustable knobs and function keys.\u003c\/li\u003e\n\u003cli\u003e2 control modes: Manual mode and Centering mode (one-key centering to 90°).\u003c\/li\u003e\n\u003cli\u003eOn-board 8-bit MCU generates high-resolution PWM signals for precise control.\u003c\/li\u003e\n\u003cli\u003eServo control accuracy: 0.09 degrees (PWM limit small change value 1 us).\u003c\/li\u003e\n\u003cli\u003eControl cycle: 20 ms; pulse width: 0.5 ms–2.5 ms.\u003c\/li\u003e\n\u003cli\u003eKF301-2P \/ KF301 terminal block power input (5V–8.4V), suitable for lithium batteries or power modules.\u003c\/li\u003e\n\u003cli\u003eProtection: anti-reverse connection protection and overcurrent protection (S1–S4 protection group, S5–S8 protection group; over 2A protection).\u003c\/li\u003e\n\u003cli\u003e4 brick holes reserved; fixing hole diameter is marked as 4.8 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported servo voltage\u003c\/td\u003e\n\u003ctd\u003e5V–8.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMCU \/ Chip\u003c\/td\u003e\n\u003ctd\u003eSTC8G2K64S4 (8-bit MCU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl modes\u003c\/td\u003e\n\u003ctd\u003eManual mode; Centering mode (to 90°)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eServo control accuracy\u003c\/td\u003e\n\u003ctd\u003e0.09 degrees (PWM limit small change value 1 us)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl cycle\u003c\/td\u003e\n\u003ctd\u003e20 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulse width range\u003c\/td\u003e\n\u003ctd\u003e0.5 ms–2.5 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eServo interface\u003c\/td\u003e\n\u003ctd\u003eEight-way servo drive; 3-pin servo interface x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input\u003c\/td\u003e\n\u003ctd\u003eKF301 5V–8.4V power socket \/ terminal block (servo power taken from input power supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-board input devices\u003c\/td\u003e\n\u003ctd\u003eMode switch button x8; potentiometer x8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-board indicator lights\u003c\/td\u003e\n\u003ctd\u003e5V power indicator (red); 6V–8.4V power indicator (red); MCU work indicator (blue); S1–S4 servo power indicator (blue); S5–S8 servo power indicator (blue)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eAnti-reverse connection protection; overcurrent protection (S1–S4 group, S5–S8 group; over 2A protection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard size\u003c\/td\u003e\n\u003ctd\u003e100 mm x 58 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarked internal dimensions\u003c\/td\u003e\n\u003ctd\u003e72 mm x 48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFixing hole\u003c\/td\u003e\n\u003ctd\u003eDiameter 4.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eHow to Use\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eSupply power to the controller. Input voltage can be 5V–8.4V (use a voltage suitable for the servo’s rated voltage).\u003c\/li\u003e\n\u003cli\u003eAfter power-on, the LED at the MCU position lights up and flashes twice in 5 seconds (blue LED).\u003c\/li\u003e\n\u003cli\u003ePlug the servo into the 3-pin servo interface: “+” is positive, “-” is negative, and “S” is the signal terminal.\u003c\/li\u003e\n\u003cli\u003eTurn the knob; the servo rotates synchronously.\u003c\/li\u003e\n\u003cli\u003eUse the button below the knob to switch modes:\n    \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentering Mode\u003c\/strong\u003e: returns to the center position; red LED off; blue LED on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual mode\u003c\/strong\u003e: knob control; blue LED off; red LED on.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch2\u003ePower Supply Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLithium battery powered: suitable for conventional 6V–8.4V high-voltage servos.\u003c\/li\u003e\n\u003cli\u003eLithium battery power supply module: suitable for conventional 5V standard servos.\u003c\/li\u003e\n\u003cli\u003eBecause servos can draw high current, ensure the power supply current is sufficient. If the power indicator light flashes during rotation, the servo rotates uncontrollably, or the error is obviously too large, the power supply current may be insufficient.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRobotic arm test \/ control\u003c\/li\u003e\n\u003cli\u003eMechanical claw test\u003c\/li\u003e\n\u003cli\u003eServo testing and centering\u003c\/li\u003e\n\u003cli\u003eModel control and creative DIY projects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eManuals\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"http:\/\/www.yahboom.net\/study\/Eight-servo-ctrl\" rel=\"noopener\" target=\"_blank\"\u003eTutorials Link: 8-channel PWM servo control debugging board\u003c\/a\u003e\u003c\/p\u003e\u003ciframe height=\"420\" src=\"https:\/\/www.youtube.com\/embed\/tPsXa25hxPA\" title=\"YouTube video player\" width=\"600\"\u003e\u003c\/iframe\u003e\u003cp\u003eThis product is a hardware debugging accessory, with no software and data included. For wiring or troubleshooting help, contact support@rcdrone.top or visit https:\/\/rcdrone.top\/.\u003c\/p\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"Yahboom 8-Channel PWM servo controller board with 8 knobs and dual 5–8.4V terminal block power input\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY.jpg?v=1782223259\"\u003e\u003cp\u003ePlug-and-play 8-channel servo debugging board with independent knob control and 5–8.4V power input for quick bench testing.\u003c\/p\u003e\n\u003cimg alt=\"Product overview card showing board size 100×58 mm, 8 potentiometers, and listed PWM control features\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_7240525e-fe23-421a-a09d-2677c2a36d36.jpg?v=1782223278\"\u003e\u003cimg alt=\"Yahboom 8-Channel PWM board driving multiple servos in manual mode and one-key centering mode to 90 degrees\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_c7ef380f-c100-4a03-9a61-77ca8cd04be3.jpg?v=1782223290\"\u003e\u003cp\u003eSwitch between manual knob control and one-key centering to return connected servos to a 90° position without writing code.\u003c\/p\u003e\n\u003cimg alt=\"Power options for the controller: lithium battery pack connection and lithium battery power supply module examples\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_98312788-3e50-4d2d-8924-d23832ed47c2.jpg?v=1782223334\"\u003e\u003cp\u003ePower the board from a 5–8.4V source, including lithium packs or a regulated supply module matched to your servo voltage.\u003c\/p\u003e\n\u003cimg alt=\"How-to-use instructions graphic for wiring servo polarity and using mode buttons and indicators\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_32935ec3-040d-4b31-9e28-7fb09ef58559.jpg?v=1782223359\"\u003e\u003cimg alt=\"Robotic arm test setup powered by battery and controlled by the servo debugging board with knob adjustments\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_9856a0aa-e52b-40c6-bfd7-2301e0e348d1.jpg?v=1782223367\"\u003e\u003cp\u003eIdeal for robotics prototyping, letting you verify servo direction and range before integrating with a main controller.\u003c\/p\u003e\n\u003cimg alt=\"Example applications: mechanical claw test, multi-servo test rig, and creative DIY control using the knob board\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_d2ed4b05-b565-4ffa-b31c-f7743ad38ca2.jpg?v=1782223388\"\u003e\u003cimg alt=\"Single servo connected to the 8-channel knob controller, highlighting compatibility with common 5–8.4V servos\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_7c6a5ba1-74c0-4932-88cd-9bd39f53fc9b.jpg?v=1782223426\"\u003e\u003cimg alt=\"Servo compatibility chart showing several servo types and typical voltage ranges such as 4.8–6V and 6–7.4V\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_a34b7329-fda0-495c-bf30-5cfede19fd40.jpg?v=1782223453\"\u003e\u003cimg alt=\"Banner text: “If you need servo, click to buy” with shopping cart icon\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY.webp?v=1782223480\"\u003e\u003cimg alt=\"Yahboom 8-Channel PWM board layout with labeled interfaces, indicators, anti-reverse and overcurrent protection areas\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_75310ab8-9c69-480d-bc6a-fecb0e101590.jpg?v=1782223503\"\u003e\u003cp\u003eClear labeled layout for fast wiring: servo headers, power input, status LEDs, and grouped protection for channels S1–S4 and S5–S8.\u003c\/p\u003e\n\u003cimg alt=\"Use suggestions card advising adequate power supply current and appropriate 5–8.4V servo voltage selection\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-Channel-PWM.webp?v=1782224057\"\u003e\u003cimg alt=\"Banner stating the board is a hardware debugging accessory with no software or data required\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/Yahboom-8-channel-PWM-servo-control-debugging-board-for-DIY_fabdc18c-86d9-4e0e-94a3-40eb931ec7f0.webp?v=1782223521\"\u003e\n\u003c\/div\u003e","brand":"Yahboom","offers":[{"title":"Default Title","offer_id":53137416749280,"sku":"6000400183-1","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/5_3aa84bfa-90d2-4968-b9d0-146e037ce773.jpg?v=1782135730","url":"https:\/\/rcdrone.top\/ru\/products\/yahboom-8ch-pwm-servo-controller","provider":"RCDrone","version":"1.0","type":"link"}