ESP32-C3 vs ESP32 WROOM DevKit V1: Which Board Fits Your Build?
By Kunkune | Published: 2026-11-01
Category: Comparisons
Compare the ESP32-C3 and ESP32 WROOM DevKit V1 on size, wireless features, and pin count to choose the right board for your next IoT project.
Quick answer
Choose the ESP32-C3 development board for compact, low-power builds that need Bluetooth 5.0 and a small footprint. Pick the ESP32 WROOM DevKit V1 (30-pin, unsoldered) when you need more GPIO pins and a classic DevKit layout for breadboarding.
Size and pin count: the first trade-off
The ESP32-C3 board is designed to be compact, making it suitable for wearable devices and tight enclosures. The ESP32 WROOM DevKit V1 offers 30 pins, giving you more GPIO for peripherals, sensors, and displays. If your project needs many connections, the larger board saves you from multiplexing or adding expanders.
Wireless features: Bluetooth 5.0 vs classic Bluetooth
The ESP32-C3 board supports Bluetooth 5.0, which can offer improved range and speed for compatible devices. The ESP32 WROOM DevKit V1 uses classic Bluetooth (often Bluetooth 4.2). For most IoT projects, both work, but if you need the latest Bluetooth features, the C3 has the edge.
Pinout and compatibility: what to check before you commit
The ESP32 WROOM DevKit V1 follows the classic 30-pin DevKit layout, so many existing tutorials and shields assume that pinout. The ESP32-C3 board has a different pin arrangement and fewer pins. Always consult the pinout diagram for your specific board before wiring, especially if you are following a guide written for the other board.
Soldering and setup: headers not included
The ESP32 WROOM DevKit V1 is unsoldered, meaning you need to solder headers if you want to use it with a breadboard. The ESP32-C3 board typically comes with headers pre-soldered, but check the product listing. If you lack soldering tools, the C3 is more plug-and-play.
Key trade-offs to weigh
- Compactness vs expandability: The ESP32-C3 board is smaller and better for wearables; the ESP32 WROOM DevKit V1 offers 30 pins for more peripherals. If your project needs many sensors, the extra pins on the DevKit V1 may save you from adding expanders.
- Bluetooth version: ESP32-C3 supports Bluetooth 5.0; ESP32 WROOM DevKit V1 uses classic Bluetooth. Check if your Bluetooth peripherals require Bluetooth 5.0 features like long range or higher throughput.
- Pinout compatibility: The DevKit V1 follows the common 30-pin layout; the C3 has a different pinout. Verify pin functions against your code and wiring diagrams before soldering or connecting.
- Soldering required: The ESP32 WROOM DevKit V1 comes unsoldered; the ESP32-C3 board typically has headers attached. If you don't have a soldering iron, choose the C3 or buy pre-soldered headers.
Product facts
- ESP32C3 Arduino Development Board WIFI Bluetooth5.0: ESP32C3 chip with WiFi and Bluetooth 5.0, compatible with Arduino and CircuitPython. You can use familiar Arduino libraries and leverage Bluetooth 5.0 for projects that need it.
ESP32C3 Arduino Development Board WIFI Bluetooth5.0 - ESP32 Unsoldered 30 pins Wroom Doit DevKit V1: 30-pin ESP32 WROOM DevKit V1, unsoldered headers. More GPIO pins are available, but you must solder headers before breadboarding.
ESP32 Unsoldered 30 pins Wroom Doit DevKit V1
Which board is right for you?
Best for
- Wearable and compact IoT projects needing Bluetooth 5.0
- Developers who want Arduino and CircuitPython compatibility out of the box
- Projects with limited space and fewer GPIO requirements
Not for
- Projects requiring many GPIO pins or classic DevKit layout
- Users who prefer the extensive community tutorials for the 30-pin ESP32 DevKit V1
- Builds that need Bluetooth 5.0 but also require 30 pins
