EM08 · Sem 6 · Embedded systems
Servo controlled by a potentiometer
Aim: Map an analog input to a servo angle (closed-loop by the user).
🧪 Live simulation🧊 Real-time 3D bench⚠ Simulated values, not physical measurements
🔬 Virtual lab
Starting the lab…
📘 Theory
Reading the potentiometer and mapping 0–1023 to 0–180° makes the servo follow the knob: the basis of RC transmitters and joysticks.
angle = reading × 180 / 1023
🧰 Apparatus (virtual)
- Dev board
- potentiometer on A0
- servo on pin 11
📝 Procedure
🎤 Viva questions
What is a dead band
A small range of input changes that is ignored to stop jitter.
How would you add smoothing
A moving average of readings.
🛡️ Safety
Virtual board. On real hardware, check supply voltages and pin current limits, and power motors and servos from a separate supply.