Hello friends, the info in this forum already was of great help to me to get the ESP32 flashed properly. So, this is the project I've been trying to build: Huy Vector DIY - DIY Stellar Clock Materials used : So far, I managed to test whether the board is l…

I have several comments on that project. The author seems from Vietnam, judging from the comments, where daylightsavings is not observed. The code uses the now obsolete NTPCLient library. This will be a pain in a country where DST is observed, meaning you must re-upload new corrected time code twic…

[image] janglerock: connected to my wifi That’s positive. Connect only one new item at the time and make the code handle it. At some point the code will be requested. How to is described in the link: How to get the best out of this forum - Development Tools / IDE 1.x - Arduino Forum “Code p…

[image] janglerock: I can see the blue onboard LED is flashing which doesn't happen on mine. #define LED_PIN 0 The LED is connected to GPIO8 on a supermini, not D0. The author has chosen to use D8,9 for I2C instead of the default D4,5. Seems like a clash with I2C. Leo..

I wasn’t sure up to now whether I can post the code directly here as it’s not my own. So here is the programm code: #include <WiFi.h> #include <Wire.h> #include <Adafruit_GFX.h> #include <Adafruit_SSD1306.h> #include <Adafruit_SHT31.h> #include <NTPClient.h> #include <WiFiUdp.h> // ===== WiFi inf…

Thanks for the Information :slight_smile: I‘m still starting out so it‘s really interesting to me. I was hoping that it wasn‘t any incompatibilty or so. Do you have an idea/link how to test the OLED in a minimal configuration? I‘ll keep trying it out.

I managed to generate an output with this thread :slight_smile: [image] Make ESP32 C3 Super mini work with OLED displays Networking, Protocols, and Devices Hi! I'm trying to get my ESP32 C3 Super mini to work with my OLED displays but I just can't get it to wo…

Ok, so after a few hours, I'm not any further :frowning: So using this code for testscreen, I even use the same pins (8 and 9) as in the code for the clock project above. I get the test proper testscreens. /************************************************************************** This is an exam…

[image] janglerock: I can see the blue onboard LED is flashing which doesn't happen on mine. It is connected to the I2C Data pin (D8) and flashes with data transfer to sensor and display. Pin D0 is connected to that external LED on top of the lander. Leo..

I have build the project on a breadboard and it works fine with the author's code. So you could have made a wiring mistake. I changed the code to include automatic daylight savings. The evironmental string is set to Berlin. The code doesn't rely on NTP libraries any more. Leo.. #include <WiFi.…

Thanks so much for your help :slight_smile: I‘ve been troubleshooting and playing around with the esp32 c3 the last few days and learned quite a bit. I‘ll come back when I managed to built it with your code as well. Thanks again :slight_smile:

The OLED has it's own regulator on the back, so is powered with 5volt (works on 3.3volt too). The SHT30 board is a 3.3volt model (no regulator or level shifter fitted), so powered from 3.3volt. The blue LED on the ESP short-flashes in the rythm of the seconds update to the OLED. I didn't bother c…

Help on an ESP32 C3 Super Mini Project (Clock)

Projects General Guidance

janglerock October 18, 2025, 8:37am 11

I managed to generate an output with this thread

Going on, next steps ...

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Help on an ESP32 C3 Super Mini Project (Clock)

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