Built-in project · ESP32-C3-DevKitM-1

Blink, with a breakpoint, on an ESP32-C3

Stop the board on the line that lights the LED, and see it frozen mid-blink with its registers. The whole build, an ESP32-C3 and 2 more parts, runs here in your browser on the firmware below; open it in the editor to change the wiring or the code and run it again.

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Blink, with a breakpoint · ESP32-C3-DevKitM-1live0.000 s 0.00x

Click to open it in the editor

The circuit itself, running here on the simulator. Press what can be pressed; click anything else to open it in the editor.

The code

The firmware exactly as the editor opens it. Change a line there and press Run: it compiles in the browser.

sketch.ino · ESP32-C3-DevKitM-1

// Blink: the smallest thing a board can do.
//
// GPIO 8 is the LED on the ESP32-C3-DevKitM-1, so LED_BUILTIN is 8. Wire an
// LED and a resistor from GPIO 8 to GND to see it on the breadboard too.

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);
  delay(500);
  digitalWrite(LED_BUILTIN, LOW);
  delay(500);
}

Parts list

4 parts, plus the jumper wires. Every one is in the editor's parts bin.

How it is wired

3 connections, pin by pin, read from the circuit itself. Each line is one set of pins joined together, by a jumper wire or a breadboard strip.

Ground: ESP32-C3-DevKitM-1 pin GND; LED, blue pin C
ESP32-C3-DevKitM-1 pin 8; Resistor, 220 Ω pin 1
Resistor, 220 Ω pin 2; LED, blue pin A

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