Attiny13 Servo Tester

Servo tester using cheap attiny13.

Code

Code is written in arduino language. Use Arduino IDE to Attiny13ServoTester.ino into your MCU.

Schematic & PCB

Schematic and PCB are created using kicad. All files necessary for kicad are stored in kicad directory.

Modes

Tester has multiple modes:

• Potentiometer mode - servo position is controlled by potentiometer and leds LED_MIN and LED_MAX light up when minimal or maximal position is reached.
• Auto mode - servo tester sets up position automatically from 0° to 180° and from 180° to 0°.
• 90° mode - position is whole time at 90°

Arduino IDE settings

• Board: ATtiny13
• Brown-out Detection Level: "1.8V"
• Link Time Optimalisation: "LTO Enabled"
• Processor Version: "ATtiny13"
• Processor Speed: "9.6MHz Internal Oscillator"
• Programmer: "Arduino as ISP"

Additional notes

• Because servo can create current impact it's better to add electrolytic and ceramic capacitor paraller to power.
• It's necessary to mirror SMD components on kicad PCB because PCB also contains THT components.

ToDo

• mirror SMD elements
• add resistor for servo
• complete all modes
• add mode change led signalisation
• cleanup code