Digilog ESP32 Super Mini Dev Board

Specifications

• Product Name: ESP32 Super Mini Dev Board
• Board Type: ESP32C3 Dev Module
• Communication: USB CDC
• Baud Rate: 9600
• Onboard LED: GPIO8

Setup-1

My ESP32 Super Mini Dev Board (Fig. 1) accepts sketches from a PC, but it does not communicate with the Serial Monitor (Bd = 9600) though the onBoard LED (at GPIO8) blinks.
[image|403×203](upload://pRi2u3tDsAxTivzokiEplEtzhlC.jpeg)
Figure-1

Setup-1

• Board: “ESP32C3 Dev Module”
• USB CDC on Boot: “Enabled”
• Port: “COM13 (ESP32S3 Dev Module)” //no other option

Sketch

• define LED_BUILTIN 8
• char myData[10];
• void setup()
• Serial.begin(9600);
• pinMode(LED_BUILTIN, OUTPUT)
• void loop()
• digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
• delay(1000); // wait for a second
• digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW delay(1000)
• byte n = Serial.available();
• if (n != 0) { byte m = Serial.readBytesUntil(‘\n’, myData, sizeof (myData)-1); myData[m] = ‘\0’
• Serial.println(myData); }
• Serial.println(“Hello”); }

The following setup has solved the problem.

Setup-2

• Board: “LOLIN C3 Mini”
• USB CDC on Boot: “Enabled”
• Port: “COM13 (ESP32S3 Dev Module)”
• Bd = 9600

Output

• Hello
• Hello
• Arduino //From InputBox of SM to ESP32C3 to OutputBox of SM
• Hello
• Hello

Would be glad to hear your opinion as to — “what is LOLIN C3”.

1. Do not place the ESP32C3 Super Mini Board on the Breadboard to avoid contact problems.
2. The onboard LED is connected at DPin-8.
3. Use a male-female jumper and connect the female side at DPin-9 to act as an external switch/button.
4. The connection diagram of the onFig. 1 LED and a button are similar to Fig. 1.
5. Select Board as follows: IDE 2.3.1 –> Tools –> ESP32.
6.  LOLIN C3 Mini USB CDC On Boot: Enabled.
7. Upload the provided sketch to the board.
8. Check that the onboard LED is off initially.
9. Closing the switch will make the onboard LED start blinking at a 2-second interval.
10. Ensure that the onboard LED is on.f
11. Gently touch the male side of the hanging wire/jumper with h G-pin of the Mini Board.
12. Confirm that the onboard LED is blinking at a 2-second interval.
13. Press the RST (Reset) Button of the Mini Board and repeat the process if needed.

Documents / Resources

Digilog ESP32 Super Mini Dev Board [pdf] Instructions ESP32 Super Mini Dev Board, ESP32, Super Mini Dev Board, Mini Dev Board, Board

References

• User Manual