C3-Mini

C3-Mini

C3-MINI
C3-MINI

A mini Wifi & Bluetooth5 (LE) board based on ESP32-C3FH4.

Hardware Features
based ESP32-C3 WIFI & Bluetooth LE RISC-V Single-Core CPU
Type-C USB
4MB Flash
12x IO
1x WS2812B RGB LED
ADC, I2C, SPI, UART
Compatible with LOLIN D1 Mini shields
Compatible with MicroPython, Arduino, CircuitPython and ESP-IDF
Default firmware: MicroPython
Tutorials
Get started with Snapping off the Frame
Get started with Initialization, Web-/ Flashing, Programming

For flashing C3-Mini successfully, you need to hold the BOOT-Button, click in parallel the RST-Button for a moment while still keeping BOOT button pressed and then start WebFlashing. Once Flashing started you can release the BOOT-Button. Whenever you want to quick change a sensor, do the same procedure. We know this is tedious, compared to old ESP8266 / ESP32 boards. Therefore we work on convenience measures against it.

Technical specs
Operating Voltage3.3V
Digital I/O Pins12
Clock Speed160MHz
Flash4M Bytes
Size34.3*25.4mm
Weight2.6g
Version
V2.2.1 Carenuity EU version
V2.1.0 Lolin version
Applications

The C3-mini, particularly the Carenuity C3 Mini, is a compact microcontroller that's quite versatile due to its features like WiFi and Bluetooth LE capabilities, a RISC-V Single-Core CPU, and compatibility with various programming environments such as MicroPython, Arduino, and CircuitPython12. Carenuity even supports install-for-free applications for the EcoSystems: CloudFree, Home Assistant, IoT AppStore and Matter/ESPZero.

Applications for the plain C3-mini 'standalone', no Display or Sensor required

Grab your plain C3-Mini and build your own device within 3 minutes, by installing the popular WLED-Application, the helpful GPIO-Viewer or a plain “empty” ESPHome device for Home Assistant with no special features built-in. Ready to make it your own.

Applications for the C3-mini with Display

Grab your C3-Mini and build your own device within 3 minutes, by attaching a display [buy here] to enable applications like a WiFi Signal Strength Meter, a Weather-Station or a YouTube-Counter for Followers and Likes.

Applications for the C3-mini with Sensor & Display

Grab your C3-Mini and build your own device within 3 minutes, by free installing various sensor applications like a Barometer, Hygrometer, Luxmeter or Motion Detector.

EcoSystems

ecosystems

What is the difference between the D1- and the C3-Mini?

The two super popular boards, the D1 and C3-Mini share the same footprint and pinout, making them a perfect fit for the world's largest sensor and actuator portfolio, which includes Mikroe's sensors by adapters.
The improvements to the C3-Mini are shown in the following illustration:

...

Evolution of the popular footprint and pinout

The ESP32-Mini was the successor of the D1-Mini, comes with added Bluetooth and is now the predecessor of the latest C3-Mini™, which we recommend to stay future proof with respect to the upcoming Matter standard.

C3-Mini
C3-Mini

This selection box eases the setup for you to test the 7 featured sensors.

Install For Free (7 Devices)

Build your own device within seconds:

Barometer
Hygrometer
Thermometer
Luxmeter
IR Radiometer
Motion Detector
Presence Button
GPIO Viewer

GPIO Viewer: Monitor GPIO pins on your browser

YouTube Meter

YouTube Meter: YouTube Channel Statistics Meter with C3-Mini

Solution Builder Widgets

Carenuity Device

The QUICK CHANGE allows to easily get the right device for your actual need.

Carenuity Device

All you do is replacing the one sensor by plugging-in the desired, following the illustration for installing the new device.

From this Modular C3-Mini™ Sensor Selection Box you select one of the 7 sensors, which you combine with the C3-Mini microcontroller and the OLED display on the Triple-Adapter, as illustrated and install the selected application:

Install For Free

Once you want to buy more parts or spare parts, be it sensors or microcontrollers, you find a good offer in the ChipGlobe WebShop:

Buy C3-Mini Parts