SparkFun Servo Trigger [WIG-13118] - (AD30687)

Description:

The SparkFun Servo Trigger is a small robotics board that simplifies RC servo control for hobbyists. When an external switch or logic signal changes state, the Servo Trigger can tell an attached hobby servo to move from position A to position B. To use the Servo Trigger, simply plug in a servo to a switch and use the onboard potentiometers to adjust the start/stop positions and the transition time. You can use hobby servos in your projects without needing to do any programming!

The heart of the Servo Trigger is an Atmel ATTiny84 microcontroller, running a small program that implements the servo control features we're describing here. Each Servo Trigger includes three potentiometers: “A” sets the position the servo sits at when the switch is open, “B” sets the position the servo moves to when the switch is closed, and “T” sets the time it takes to go from A to B and vice versa. Compared to a hobby servo, the Servo Trigger board draws very little current, about 5 mA at 5 V. Please be aware that if you are using the Servo Trigger to control your motor, the maximum supply voltage that should be applied is 5.5 VDC. Additionally, the SparkFun Servo Trigger is designed to make daisy-chaining boards together easy: simply connect the VCC and GND terminals of adjacent boards.

Features:

• Recommended Voltage: 5 VDC
• Maximum Voltage: 5.5 VDC
• Current Draw: 5 mA
• Three Control Adjustments
  • A: Sets the position the servo sits at with the switch open
  • B: Sets the position the servo moves to with the switch closed
  • C: Sets the time it takes to go from A to B and vice-versa
• Easy potentiometer control
• Configurable input polarity
• Configurable response mode
• Analog servo compatible
• ISP connector pins available for reprogramming

Documents:

• Schematic
• Eagle Files
• Hookup Guide
• Datasheet (ATtiny84)
• GitHub

Reference Link 1

Reference Link 2