A
Anonymous
Apr 09, 2026
Rating: 5/5
Low power consumption
Ideal for battery projects. Sleep modes work as expected.
Description
ESP32-C3 OLED Development Board Ceramic Antenna
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Development Boards & Control Boards |
| Origin | - |
| Microcontroller | ESP32-C3 |
| Wireless Connectivity | WiFi 802.11 b/g/n, Bluetooth 5 LE |
| Display Specification | 0.42-inch OLED |
| Antenna Type | Integrated Ceramic Antenna |
| Flash Memory | 4 MB |
| SRAM Capacity | 400 KB |
| Operating Voltage | 3.3V Logic |
| Input Interface | USB Type-C |
| GPIO Pins | 22 Programmable GPIOs |
| Dimensions | 50mm x 25mm |
5 reviews
A
Anonymous
Apr 02, 2026
Rating: 5/5
Perfect for small IoT sensors
Works flawlessly with Home Assistant. Very compact.
A
Anonymous
Feb 06, 2026
Rating: 4/5
Great board, tiny screen
The OLED is sharp but hard to read without glasses. Otherwise solid.
A
Anonymous
Jan 31, 2026
Rating: 5/5
Arduino IDE compatible
Uploaded sketches easily. WiFi range is impressive for the size.
A
Anonymous
Jan 28, 2026
Rating: 3/5
Good hardware, weak docs
Had to search forums for pinout details. Board works well though.
5 FAQ
Q: Is 5V tolerant?
A: No, GPIOs are 3.3V logic.
Q: Supports MicroPython?
A: Yes, ESP32-C3 is fully MicroPython compatible.
Q: Which library for OLED?
A: U8g2 or Adafruit_SSD1306 works.
Q: Can I use external antenna?
A: No, this model has integrated ceramic only.
Q: Power supply via USB?
A: Yes, 5V via USB-C powers the board.
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