Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | ESP32-C3 (RISC-V 32-bit) |
| Display Type | 0.42-inch OLED |
| Connectivity | Wi-Fi 2.4 GHz, Bluetooth 5 (LE) |
| Antenna | On-board Ceramic Antenna |
| Flash Memory | 4 MB |
| Operating Voltage | 3.3V |
| Interface | USB Type-C |
| GPIO Pins | 22 Programmable GPIOs |
| Dimensions | 56mm x 24mm x 12mm |
| Compatibility | Arduino IDE, ESP-IDF, MicroPython |
Anonymous
Mar 31, 2026
Rating: 5/5
Excellent value for money
For the price, you get Wi-Fi, BLE, and a display all on one tiny board. The USB-C connection makes programming very convenient. I've used it for a weather station project with great results.
Anonymous
Mar 26, 2026
Rating: 4/5
Solid performance
Bluetooth pairing is quick and reliable. The only reason for 4 stars instead of 5 is that the OLED brightness could be slightly higher for outdoor use, but it's fine for indoor applications.
Anonymous
Mar 20, 2026
Rating: 5/5
Great for learning embedded systems
As a student, this board is perfect for learning about IoT. The community support is huge, and getting the example codes to run on the OLED screen was straightforward using Arduino IDE.
Anonymous
Mar 16, 2026
Rating: 5/5
Low power consumption
I was impressed by the low power draw in deep sleep mode. The C3 chip is efficient, and the small form factor fits perfectly into my wearable prototype enclosure.
Anonymous
Mar 09, 2026
Rating: 5/5
Perfect for compact IoT projects
The integrated OLED screen is a game changer for debugging without needing a serial monitor. The ceramic antenna provides stable Wi-Fi connectivity in my tests. Highly recommended for portable devices.
Anonymous
Mar 07, 2026
Rating: 4/5
Great board, minor documentation gaps
Hardware quality is excellent and the RISC-V architecture runs smoothly. I had to dig into the ESP-IDF docs to find specific pin mappings for the OLED, but once set up, it works flawlessly.
Q: Which GPIO pins are broken out on the header?
A: Most GPIOs are accessible via the headers, including GPIO2 through GPIO10 and others. Please refer to the pinout diagram in the product wiki for the complete mapping, as some pins are shared with the OLED or Flash.
Q: Does this board support MicroPython out of the box?
A: The board comes with a default firmware, but it is fully compatible with MicroPython. You will need to flash the MicroPython firmware binary using a tool like esptool.py to get started.
Q: Is the ceramic antenna suitable for long-range applications?
A: The ceramic antenna offers good performance for standard IoT ranges (typically up to 30-50 meters indoors depending on obstacles). For extreme long-range needs, an external antenna version might be more appropriate.
Q: Can I power this board via the VIN pin instead of USB?
A: Yes, you can power the board via the 5V VIN pin. The onboard regulator will step it down to 3.3V for the ESP32-C3 and peripherals. Ensure the input voltage does not exceed 6V.
Q: What is the resolution of the 0.42-inch OLED screen?
A: The integrated OLED display has a resolution of 72x40 pixels. It is sufficient for displaying sensor data, status icons, and simple text menus.
Yanyu Mineral Water Fish Tank Stand - Triangular Bracket for Inverted Bottle Self-Made Water Circulation System
$17.05
Jingdezhen Pink Peony Flourishing Tea Canister Ceramic Lidded Loose Tea Storage Jar CYG-4578 One Jin Capacity Pu'er
$450.60
Round Sponge Brush Stamp with Mushroom Head – Printing Tool for Kindergarten Art and Kids' Crafts
$0.27
Metal Wick Centering Tool with Wooden Base for DIY Scented Candle Making
$1.28
Custom Temporary Bank Account Opening Sign, Company Signboard, Stainless Steel Door Plate, PVC Simple Plaque, Acrylic Advertising Board
$15.20
Natural Raw Crystal Diffuser Stones 500g - Same Style as Certain Summer Brand, Flameless Indoor Decor (White, Green, Purple, Yellow, Black, Blue)
$10.20
Iron Chain, Flower Pot Hanging Chain with Iron Rings, Black Suspension Chain for Bird Cages and Garden Planters
$0.10
Sheepskin Rattle with Brass Bells - Handmade Wooden Peach Wood Baby Toy for Chewing, Perfect for Children's Day
$10.80
Commercial Square Insulated Warmer Cabinet with Constant Temperature Heating, Countertop Display Case for Roast Duck, Chicken, Fried Chicken, Smoked Goose, and BBQ Meat
$338.00
PISEN Desktop Cable Organizer - Magnetic Data Cord Manager, Soft Silicone Fixed Wire Winder with Adhesive Clips, Mini Portable Hub
$10.10
Handcrafted Peach Wood and Sheepskin Rattle with Brass Jingle Stick – Traditional Chewable Wooden Baby Toy
$74.00
DC Drive DCS550-S02-0050-05-00-00
$10,838.20
Waterproof Storage Bag for Clothes and Bathroom Use, Large-Capacity Drawstring Organizer for Men and Women, Outdoor Travel and Toiletry Pack
$39.90
Steel Speed Bump with Rubber Surface for Cars and Railways
$3,668.00
Huaboshi Thickened Resin Vegetable Planter Box – Rectangular Plastic Balcony Grow Container with Drainage Tray
$45.99
New Data Cable Storage Bag Travel Digital Charger Cord Organizer Protective Visible Multi-Use Portable Case
$1.64
Press Wash Blade for KBA Printing Presses - Model KBA105 Ink Scraper, 1160*40mm
$40.50
Genuine Pirelli Run-Flat Car Tire P7 225 245 275 285/35 40 45 R18 19 20 21
$336.00
Chuangshidai 100XP Compact Desktop Fume Extractor for Soldering Irons - Rapid Smoke Purification
$696.00
Multi-Function Kitchen Sink Rack - Dish Drying Organizer for Bowls and Plates
$33.10
Water Brush Kids Water Painting Book Graffiti Special Pen Water Sketchbook Eco-Friendly Safe Tap Water Refillable Pen Set
$2.16
No-Drill Over-Toilet Storage Rack for Bathroom Restroom Organizer
$8.90
Jingdezhen Blue and White Porcelain Antique Brush Washer, Traditional Chinese Painting Calligraphy Brush Rinse Basin, Large and Small Water Pots
$16.90
Sketch Blending Stump Set for Art Students - Highlight Detail Shadow Tool Kit with Replacement Sponge Heads for Beginners
$9.00
Changyiyou Outdoor Large-Capacity Wheeled Duffel Bag - Thickened Storage Backpack with Wheels for Camping Gear and Travel
$109.00
Lightweight Waterproof Dry Bag for River Trekking and Rafting – Travel Storage for Clothes, Shoes, Socks with Moisture-Proof Buckle, Roll-Top Carry Design
$15.80
Tupai 3D Self-Adhesive Wall Stickers, Custom Acrylic Logo Advertising Letters for Signage, Background Walls, and Image Wall Decor
$8.50
Durable Replacement DEUBLIN 525/357 Water Inlet/Outlet Rotary Union for Curved Surface Printing and Cup Printing Machines
$300.00
Detachable Large Water Barrel Rack for Mineral and Purified Water, Office Bottled Water Storage Stand with Wheels
$136.00
Tea Packaging Gift Box - Empty Ceramic Tea Canister for Longjing, Green Tea, White Tea, Ripe Pu'er, Universal Packaging
$68.00
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
