Examples

A knob sets the blink rate

The A0 reading is used directly as the delay, so turning it speeds the blink up.

Arduino Uno R30 libraries51 linesOverall confidence 100%

SourceRead onlyanalog_input.ino

/* Analog Input Demonstrates analog input by reading an analog sensor on analog pin 0 and turning on and off a light emitting diode(LED) connected to digital pin 13. The amount of time the LED will be on and off depends on the value obtained by analogRead(). The circuit: - potentiometer center pin of the potentiometer to the analog input 0 one side pin (either one) to ground the other side pin to +5V - LED anode (long leg) attached to digital output 13 through 220 ohm resistor cathode (short leg) attached to ground - Note: because most Arduinos have a built-in LED attached to pin 13 on the board, the LED is optional. created by David Cuartielles modified 30 Aug 2011 By Tom Igoe This example code is in the public domain. https://docs.arduino.cc/built-in-examples/analog/AnalogInput/ */ int sensorPin = A0; // select the input pin for the potentiometer int ledPin = 13; // select the pin for the LED int sensorValue = 0; // variable to store the value coming from the sensor void setup() { // declare the ledPin as an OUTPUT: pinMode(ledPin, OUTPUT); } void loop() { // read the value from the sensor: sensorValue = analogRead(sensorPin); // turn the ledPin on digitalWrite(ledPin, HIGH); // stop the program for <sensorValue> milliseconds: delay(sensorValue); // turn the ledPin off: digitalWrite(ledPin, LOW); // stop the program for <sensorValue> milliseconds: delay(sensorValue); }

What the parser saw

Extracted from #include · #define · pinMode · constructor arguments. The output of a deterministic parser, not an AI.

Parts

ledidentifier ledPin

60%

potusage analogRead(sensorPin)

50%

Buses

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Libraries

No libraries — read from pin names and pinMode alone.

Pin contract

An immutable contract owned by the project. It survives level changes; on a target board only the physical pins are remapped.

Logical name	Pin	Direction	Signal	Declared as
sensorPin	A0	in	analog	#define
ledPin	D13	out	digital	#define

This page passes no verification gate. Logic (simulator), electrical (ERC · DRC) and physical (your confirmation) verification each run separately inside a project.

Next step

Same sketch, from simulation to PCB

The code stays as it is. Run it on avr8js in the Playground; import it into a project and the 8-pass electrical verification, KiCad board generation and Gerber export follow.

Run in Playground Import into a project