{"title":"SparkFun Servo Trigger","handle":"sparkfun-servo-trigger","url":"/products/sparkfun-servo-trigger","description":"The SparkFun Servo Trigger is a compact robotics board that simplifies control of hobby RC servo motors — no programming required. When an external switch or logic signal changes state, the board tells an attached servo to move from position A to position B.\n\nSimply connect a hobby servo and a switch, then adjust the three on-board potentiometers to set the start position, end position, and transition time. The board is designed for easy daisy chaining — connect the VCC and GND pads on adjacent boards to run multiple servos from a single power source.\n\nKey Features\n\n\nNo Programming Required – Configure everything with three potentiometers\n\nThree Control Potentiometers – A (start position), B (end position), T (transition time)\n\nATtiny84 Microcontroller – Handles all servo control logic on-board\n\nConfigurable Input Polarity – Works with normally-open or normally-closed switches\n\nConfigurable Response Mode – Multiple operating modes available via the hookup guide\n\nDaisy Chainable – Connect multiple boards via shared VCC and GND pads\n\nISP Header – Reprogrammable via standard ISP programming pins\n\nLow Current Draw – Approximately 5 mA at 5 V (excluding servo)\n\n\nSpecifications\n\n\nRecommended Voltage: 5 V DC\n\nMaximum Voltage: 5.5 V DC\n\nCurrent Draw: ~5 mA (board only)\n\nServo Compatibility: Analog hobby servos\n\n\n\nNote: The absolute maximum supply voltage is 5.5 V DC. Exceeding this may damage the board.\n\n\nIdeal For\n\nAnimatronics and props\nAutomated doors, gates, and latches\nRobotics projects without a microcontroller\nInteractive displays and exhibits\n\n\nResources\n\nHookup Guide\nSchematic (PDF)\nATtiny84 Datasheet (PDF)\nGitHub Repository\n","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":12201,"title":"Default Title","sku":"SF-WIG-13118","price":43.09,"on_sale":false,"in_stock":true,"available_quantity":3,"option1":"Default Title"}]}