Comments on: Getting Started with the ESP32-C3 Super Mini

By: Michael

Michael — Mon, 11 May 2026 18:38:57 +0000

In reply to jvabole. See reply to Sara...

By: Michael

Michael — Mon, 11 May 2026 18:37:47 +0000

Hi Sara, thanks for the reply. The code loaded and ran, just never got any of the serial messages. After a lot of research, trying fixes, and a few different C3 hardware profiles, everything works as intended simply after selecting the LOLIN C3 Mini. It was a Temu purchase, so had zero information on it.

Cheers,
Michael

By: jvabole

jvabole — Mon, 11 May 2026 10:02:41 +0000

The problem could be in Win10, when the COM port number assigned to Win10 is different in the esp32c3 programming and operating modes, in which case the number must be specified manually in Win, the same for both cases.

By: Sara Santos

Sara Santos — Mon, 11 May 2026 09:39:23 +0000

In reply to Michael L..

Hi.
What happens when you open the Serial Monitor?
Do you get any errors?
Can you upload code to the boarD?
Regards,
Sara

By: Michael L.

Michael L. — Mon, 11 May 2026 02:53:28 +0000

Thank you for your great tutorials! Can you offer any thoughts why I cannot ever see any serial output on the C3 mini? I often have the same problem with ESP32-S3 Zero as well, though no issues with the full size NODEMCU-32 V1.2 – still using IDE v1.8.19

By: Janis

Janis — Thu, 26 Mar 2026 12:38:43 +0000

In reply to bablb. of course

By: bablb

bablb — Wed, 25 Mar 2026 18:41:13 +0000

its wrong. you should have to enable “USB CDC on Boot” in Tools to communicate

By: bobby

bobby — Sun, 15 Feb 2026 11:33:29 +0000

In reply to jvabole. Are you sure this is due to power supply issue? There are reports of the antenna being inappropriately placed, which causes the tx to back-off at higher power, causing connection issues. Have a look at the antenna mods for that board that improve RSSI by 6-10dB, and apparently fix the issue with the connectivity of the aliexpress boards. The mod I'm describing is a half loop and a straight piece of wire connected in parallel with the chip antenna.

By: Sara Santos

Sara Santos — Sun, 15 Feb 2026 11:01:24 +0000

In reply to jvabole.

Hi.

Thanks for sharing.
Regards,
Sara

By: jvabole

jvabole — Sun, 15 Feb 2026 06:55:32 +0000

Esp32-c3 board from AliExpress has a problem – wifi connection is very unstable. The problem is apparently in the power supply circuit. The problem can be solved by reducing the transmission power. In the case of arduino
Wifi.begin(ssid_char, password_char);
Wifi.settxpower(wifi_power_8_5dbm);